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Offre d'emploiSenior IT Infrastructure & Systems Lead

Nexus Jobs Limited
Publiée le
Active Directory Domain Services (AD DS)
Cisco
Microsoft Windows

12 mois
£70k-75k
Cité de Westminster, Royaume-Uni
Senior IT Infrastructure & Systems Lead Our Client a bank, in Central London are looking for an experienced IT Infrastructure professional who is ideally looking for their next challenge in a dynamic and regulated financial services environment. We are seeking a highly skilled Senior IT Infrastructure Officer to lead the management, security, and continuous improvement of our enterprise IT infrastructure. The Senior IT Infrastructure Officer will be playing a key role in ensuring the availability, resilience, and performance of critical systems while supporting technologies across servers, networks, cloud services, cybersecurity, and business-critical financial applications. The candidate must have strong technical expertise in Windows/Linux, VMware, Microsoft 365, networking, cybersecurity, and infrastructure management who also enjoys solving complex challenges and driving operational excellence. Must have 7 years' experience in enterprise infrastructure, ideally within banking or financial services, and be passionate about delivering secure, reliable IT services.. The role will be Monday to Friday, 9:30am to 5:30pm and reporting into the Head of IT & Data. Due to the nature of the role, the individual is expected to work in our offices, 5 days per week, during their probationary period This role is totally hands-on. Role Description The Senior IT Infrastructure & Systems Lead is a full-time hybrid role based in London, with flexibility for some work-from-home arrangements. This role is responsible for overseeing the day-to-day operation, maintenance, and improvement of the company's IT infrastructure, including networks, servers, and core systems. The person in this role will lead and mentor technical staff, manage system performance and availability, and coordinate responses to incidents and service requests. Typical tasks include monitoring network and system health, implementing security measures, resolving technical complex issues, planning upgrades, and collaborating with stakeholders to align technology solutions with business needs. The role also involves vendor management, documentation of infrastructure and procedures, and contributing to IT strategy and roadmap decisions. Qualifications · Candidates should possess strong skills in Network Administration and Information Technology for managing and optimizing infrastructure and systems. · Candidates should possess solid Technical Support and Troubleshooting skills to diagnose, resolve, and prevent complex IT issues. · Candidates should possess expertise in Network Security to implement, monitor, and improve security controls and practices. · Extensive experience in leading IT infrastructure projects, including planning, implementation, and migration activities. · Proven ability to manage and mentor IT teams, with strong communication and stakeholder management skills. · Experience with server and cloud technologies, virtualization, backup and recovery, and IT monitoring tools. · Relevant professional certifications (eg, CompTIA Network+, CCNA, MCSE, or similar) are beneficial. · Bachelor's degree in Information Technology, Computer Science, or a related field, or equivalent practical experience. Infrastructure & Systems Management · Administer, maintain, and optimize Windows and Linux server environments. · Manage VMware virtualized infrastructure (vSphere 8 and above). · Oversee enterprise backup and disaster recovery solutions using Veeam Backup & Replication. · Manage Veeam ONE monitoring and Veeam Recovery Orchestrator (VRO) environments. · Administer endpoint security and encryption solutions, including Symantec Endpoint Protection (SEP) and Symantec Endpoint Encryption (SEE). · Support endpoint DLP, SIEM, and security monitoring tools (eg, Splunk, Tenable). · Manage patching processes using ManageEngine Patch Manager Plus. · Support Microsoft 365 services and related cloud technologies. · In depth understanding of Cyber ​​security · Monitor system performance, capacity, availability, and infrastructure health. · Ensure compliance with IT governance, security policies, and operational standards. End-User Computing & Branch Support · Provide advanced desktop, laptop, printer, Mobile device (iOS) and branch office IT support. · Deliver AV support for meeting rooms, conferencing, presentations, and collaboration systems. · Manage OS deployment, imaging, image creation, maintenance, and software packaging. · Administer Active Directory (AD), Group Policy Objects (GPOs) and user provisioning and NTFS permissions. · Support Microsoft 365 applications including Outlook, Teams, OneDrive, and SharePoint. · Resolve technical incidents and service requests in line with agreed SLAs. Enterprise Applications & Financial Systems Support · Support and administer business-critical applications, including: · Bloomberg FXT and Refinitiv Eikon, Murex Treasury System, SWIFT Alliance Access (SAA), 1AML, SIBS, GFMS, COP · Support enterprise file synchronization and replication solutions (eg, Syncovery, other SFTP). Networking • Configure and support Cisco switches and routers. • Administer FortiGate firewall environments. • Strong network fundamentals: DNS, DHCP, TCP/IP, LAN/WAN, Routing and connectivity troubleshooting. Monitor network performance, availability, and security posture. Security & Endpoint Management · Support vulnerability management using tools such as Tenable. · Manage security monitoring and log analysis tools (eg, Splunk). · Perform SSL/TLS certificate lifecycle management using OpenSSL. · Create and manage CSRs, certificate chains, and private keys. · Ensure adherence to cybersecurity policies, standards, and regulatory requirements. · Support physical access control systems (eg, Paxton) Operating Systems · Windows 11 · Windows Server 2019/2022 (or equivalent enterprise environments) Red Hat Linux Infrastructure & Virtualization · VMware vSphere / vCenter (v8.0.3 and above) Veeam Backup & Replication Veeam ONE, VRO Microsoft Office 365 · ManageEngine Patch Manager Plus SaaS solutions SQL Server Security · Symantec Endpoint Protection (SEP) · Symantec Endpoint Encryption (SEE) SentinelOne – EDR/XDR Endpoint DLP solutions Firewall administration · Vulnerability management tools (eg, Tenable) SIEM tools (e.g., Splunk) Networking Cisco Switches and Routers · FortiGate Firewalls · LAN/WAN networking and routing Hardware & Storage Dell PowerEdge Servers · Dell PowerVault SAN Storage Education Bachelor or Master's degree or professional qualification in relevant discipline (IT/Information Systems/Computer Science/Technology/Programming/Information Science/System Engineering/Computing) The role is based in Central London and initially will be 5 days per week in the office. This is a 12 month FTC position. The salary for the role will be around £70K - £75K. Do send your CV to us in Word format along with your salary and availability.
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CDI

Offre d'emploiInformation Security Manager with Network Engineering Skills

Nexus Jobs Limited
Publiée le
Cisco
CISSP
Cybersécurité

£85k-100k
Cité de Westminster, Royaume-Uni
Information Security Manager with Network Engineering Skills Our Client is a bank based in Central London who are looking to recruit a seasoned professional with at least 7 to 10 years expertise level Information Security coupled with Hands-on Network Engineering. The role is mainly Information Security – Data Security and split circa 80% with 20% Network Engineering – so you do need to be hands-on technically. You will ideally have circa 5+ years of work experience with Network Engineering coupled with over 10 years experience with Cisco Systems Products Role Description The Information Security Manager with Network Engineering Skills is a full-time hybrid role based in London, with the flexibility to work from home part of the week. The role oversees the design, implementation, and continuous improvement of information security policies, procedures, and controls across networks and systems. Day-to-day responsibilities include managing the Information Security Management System (ISMS), monitoring cybersecurity and network security events, coordinating incident response, and ensuring compliance with relevant standards and regulations. The person in this role will collaborate with IT and business stakeholders to assess risks, implement technical and procedural safeguards, and support secure network architecture and configuration. Additional tasks include producing security documentation, leading security awareness initiatives, and providing guidance on secure network engineering practices. Qualifications · Strong skills in Information Security Management and Information Security, with experience defining and enforcing security policies and governance. · Hands-on expertise with Information Security Management Systems (ISMS), including implementation, maintenance, and audit readiness. · Proficiency in Cybersecurity and Network Security, covering threat detection, vulnerability management, network hardening, and incident response. · Demonstrated network engineering experience (eg, routing, switching, firewalls, VPNs, secure network design). · Relevant certifications such as CISSP, CISM, CISA, CompTIA Security+, or similar are beneficial. · Experience with regulatory and compliance frameworks (eg, ISO 27001, GDPR, NIST) and security best practices. · Ability to analyze complex technical environments, communicate clearly with both technical and non-technical stakeholders, and document security requirements and processes. · Bachelor's degree in computer science, information security, engineering, or a related field, or equivalent professional experience. Key Networking Skills Required: Cisco Network Switches Layer 2 and 3 (Catalyst 9K) – CCNP Level, Expert Level Preferred Routing protocol – OSPF (Catalyst 9K) – CCNP Level, Expert Level Preferred Cisco Switch Stacking (Cat 9K Switches 9600, 9300. 9200) Virtual Routing and Forwarding – (Catalyst 9600) Internetworking Troubleshooting - CCNP Level, Expert Level Preferred High Availability and Disaster Recovery - CCNP Level, Expert Level Preferred Security/Cyber ​​​​Security Skills Required: Cisco Firepower Firewalls (ASA, FTD) - CCNP Level, Expert Level Preferred Palo Alto Firewalls – Specialist Level, Architect Level Preferred Cisco Layer 2 Port Security Network Access Control including Cisco ISE, TACACS etc. Network Detection and Response Network Encryption (Site to Site VPN's) Cisco Secure Client (ASA) Network IPS (Trellix) Network Zero Day (Trellix NX or similar) Host Zero Day (Trellix HX or similar) Cyber ​​Security Network Control Incident Investigation with the assistance of group cyber security experts – Tier 1, Tier 2 to 3 preferred, using LogRhythm SIEM a bonus Host End Point Protection (Symantec) Host IPS Preferred Skills and Knowledge Vulnerability Management (Scanning for Vulnerabilities and classifying the risk, CIS Benchmark Scanning and compliance) – Using Rapid7 a bonus Knowledge of Penetration Testing, understanding of the types of testing and their advantages and disadvantages Security Zone Design and considerations Network and Security Architecture Design and Considerations Understanding of Information Security (Confidentiality, Integrity, Availability), MITER ATT&CK, NIST, ISO 27001, SIEM use cases for key controls etc Risk Management in Cyber ​​Security, SSL Blind spots, what causes them and how to mitigate Malware/Ransomware and how to mitigate along with Penetration testing concepts Understanding of White/Black/Grey Box penetration testing. Developing Security policies and procedures and conducting audits/risk assessments Handling crisis situations during security incidents The role is hybrid 3 days in the office in Central London. The salary for this role will be in the range £85K - £100K + Benefits. Do send your CV to us in Word format along with your salary and notice period.
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Mission freelanceInformation Security Manager with Network Engineering Skills

Nexus Jobs Limited
Publiée le
Cisco
CISSP
Data governance

3 mois
£500-650
Cité de Westminster, Royaume-Uni
Information Security Manager with Network Engineering Skills Our Client is a bank based in Central London who are looking to recruit a seasoned professional with at least 7 to 10 years expertise level Information Security coupled with Hands-on Network Engineering. The role is mainly Information Security – Data Security and split circa 80% with 20% Network Engineering – so you do need to be hands-on technically. You will ideally have circa 5+ years of work experience with Network Engineering coupled with over 10 years experience with Cisco Systems Products Role Description The Information Security Manager with Network Engineering Skills is a full-time hybrid role based in London, with the flexibility to work from home part of the week. The role oversees the design, implementation, and continuous improvement of information security policies, procedures, and controls across networks and systems. Day-to-day responsibilities include managing the Information Security Management System (ISMS), monitoring cybersecurity and network security events, coordinating incident response, and ensuring compliance with relevant standards and regulations. The person in this role will collaborate with IT and business stakeholders to assess risks, implement technical and procedural safeguards, and support secure network architecture and configuration. Additional tasks include producing security documentation, leading security awareness initiatives, and providing guidance on secure network engineering practices. Qualifications · Strong skills in Information Security Management and Information Security, with experience defining and enforcing security policies and governance. · Hands-on expertise with Information Security Management Systems (ISMS), including implementation, maintenance, and audit readiness. · Proficiency in Cybersecurity and Network Security, covering threat detection, vulnerability management, network hardening, and incident response. · Demonstrated network engineering experience (eg, routing, switching, firewalls, VPNs, secure network design). · Relevant certifications such as CISSP, CISM, CISA, CompTIA Security+, or similar are beneficial. · Experience with regulatory and compliance frameworks (eg, ISO 27001, GDPR, NIST) and security best practices. · Ability to analyze complex technical environments, communicate clearly with both technical and non-technical stakeholders, and document security requirements and processes. · Bachelor's degree in computer science, information security, engineering, or a related field, or equivalent professional experience. Key Networking Skills Required: Cisco Network Switches Layer 2 and 3 (Catalyst 9K) – CCNP Level, Expert Level Preferred Routing protocol – OSPF (Catalyst 9K) – CCNP Level, Expert Level Preferred Cisco Switch Stacking (Cat 9K Switches 9600, 9300. 9200) Virtual Routing and Forwarding – (Catalyst 9600) Internetworking Troubleshooting - CCNP Level, Expert Level Preferred High Availability and Disaster Recovery - CCNP Level, Expert Level Preferred Security/Cyber ​​​​Security Skills Required: Cisco Firepower Firewalls (ASA, FTD) - CCNP Level, Expert Level Preferred Palo Alto Firewalls – Specialist Level, Architect Level Preferred Cisco Layer 2 Port Security Network Access Control including Cisco ISE, TACACS etc. Network Detection and Response Network Encryption (Site to Site VPN's) Cisco Secure Client (ASA) Network IPS (Trellix) Network Zero Day (Trellix NX or similar) Host Zero Day (Trellix HX or similar) Cyber ​​Security Network Control Incident Investigation with the assistance of group cyber security experts – Tier 1, Tier 2 to 3 preferred, using LogRhythm SIEM a bonus Host End Point Protection (Symantec) Host IPS Preferred Skills and Knowledge Vulnerability Management (Scanning for Vulnerabilities and classifying the risk, CIS Benchmark Scanning and compliance) – Using Rapid7 a bonus Knowledge of Penetration Testing, understanding of the types of testing and their advantages and disadvantages Security Zone Design and considerations Network and Security Architecture Design and Considerations Understanding of Information Security (Confidentiality, Integrity, Availability), MITER ATT&CK, NIST, ISO 27001, SIEM use cases for key controls etc Risk Management in Cyber ​​Security, SSL Blind spots, what causes them and how to mitigate Malware/Ransomware and how to mitigate along with Penetration testing concepts Understanding of White/Black/Grey Box penetration testing. Developing Security policies and procedures and conducting audits/risk assessments Handling crisis situations during security incidents The role is hybrid 3 days in the office in Central London. The rate for this role will be in the range £500 pd to £650 pd. This is a 3-month assignment. Do send your CV to us in Word format along with your salary and notice period.
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CDI

Offre d'emploiIT Support Analyst/Engineer with Level 1 and Level 2

Nexus Jobs Limited
Publiée le
Cisco
DHCP (Dynamic Host Configuration Protocol)
DNS

£55k-60k
Cité de Westminster, Royaume-Uni
IT Support Analyst/Engineer with Level 1 and Level 2 Role Description This full-time IT Support Analyst/Engineer role covers both Level 1 and Level 2 support and is offered on a hybrid basis, with work primarily in London and some work from home flexibility. Day-to-day responsibilities include handling incoming support tickets, responding to user queries, and providing first-line technical assistance for hardware, software, and network issues. The role also involves performing more advanced second-line diagnostics, resolving complex incidents, escalating problems when required, and updating documentation and knowledge bases. The IT Support Analyst/Engineer will install and configure systems, manage user accounts and access permissions, monitor system performance, and assist with routine maintenance tasks and upgrades. Collaboration with other IT team members and clear communication with non-technical users are key aspects of the position. Qualifications · Candidates should possess strong Technical Support and Information Technology skills, including experience with common operating systems, hardware, and business applications. · Candidates should possess solid Analytical Skills and Troubleshooting abilities to diagnose issues, identify root causes, and deliver effective solutions. · Candidates should possess clear and professional Communication skills, with the ability to explain technical concepts to users at different levels of technical understanding. · Relevant certifications such as CompTIA A+, Network+, Microsoft, or similar credentials are beneficial, along with experience in Level 1 and Level 2 support environments. · Ability to work in a hybrid setting, manage priorities in a busy service desk environment, and maintain a customer-focused, inclusive approach when supporting diverse user groups. For this position you will have at least 5 years experience in IT as an IT Support Engineer with 1st and 2nd Level support experience - ideally in the Banking/Financial industry. In-depth knowledge of and troubleshooting experience with Windows, Office applications and conferencing applications. Responsible for the support and maintenance of the IT infrastructure and to provide IT support to staff and other group colleagues. To assist in the response to service outages and other IT related problems as well as maintenance and upkeep of for security of the systems in place. · To provide IT Support and assistance to the branch's staff in a timely manner. · Responsible for the maintenance of the IT infrastructure of the Branch by providing first & Second line support of software, hardware and networking that includes installation, configuration and troubleshooting. Support endpoint security standards (antivirus/firewall/patching/two-factor authentication). · Provide day to day support to the Admin and HR function to cover: joiners/leavers/movers process, CCTV & Paxton Card Access. · Assist the IT Manager in delivering various IT related projects by managing the day to day operational aspects of such projects. · End User Computing support for all staff. (eg Install, configure, and maintain desktops, laptops, printers, Phones/Mobiles and other IT equipment.) · Networking Fundamentals – DNS, DHCP, TCP/IP, and LAN/WAN. · Good understanding of cybersecurity measures · Coordinator between the London Users and Group IT Security on all requests for systems access and to ensure that such permissions are provided promptly, are regularly updated and that the Group Access Matrix Protocol is followed at all times. · Preserve the Assets of the Office by implementing Disaster Recovery and back up procedures and ensuring that the standards comply with Group requirements. · Provide IT support to ensure the smooth running of daily and periodic reports for the London Compliance team to ensure adherence to the Anti Money Laundering Provisions. · Undertake Data Extraction for reporting requirements for all the other stakeholders at the branch. · To hold Administrator function for some of the systems housed at the Office. Responsible for the granting of access and maintenance of system matrixOverall networking equipment monitoring (ie Network Switches, Firewall and other appliances) and support inclusive of the server room. · To plan and carry out maintenance checks to ensure IT Operations, infrastructures are running smoothly and ensure daily routine task completeness. · Manage inventory of computers, network equipment including tracking of purchased equipment and services. · To maintain and ensure that the BCP site is always ready for continuous bank operations · Important Business Services - IBS owner is to ensure the resilience of the IBS they are responsible for (Ensure appropriate RCSAs, CETs, KRIs are in place to monitor procedures and controls within their units) · Assist the HOD/Manager with implementing/putting in place, any applicable training/guidance/SOPs to staff relating to cyber security & operational resilience. · To maintain the branch Avaya IP Office Phone system and to ensure that the recording system is always up and running at all times. · To perform monthly infrastructure test and report for Risk Assessment. · Manage Incident Handling procedure (This includes monitoring as well as post-incident follow up). · Respond to IT service requests and incidents in a timely manner, prioritizing based on business impact, especially for critical banking functionsSupport the Branch operations as and when needed and any other tasks assigned by Management of the Branch. Data Integrity and Compliance Operationalize data strategy and communicate to the Data Owner or the Management any changes in their BAU requirements which involve data. · To ensure all data worked on and or/shared with internal/external clients are accurate, compliant and maintained in accordance with Company's data quality standards. · Handle all data in strict alignment with the General data protection Regulations (GDPR) principles. · Keep track of documents created by the team. · Escalate any suspected data breaches or privacy issues to the DPO promptly and without delays. · Ensuring any data sharing requests are discussed with HOD/DPO so that prior authorization is given and follows GDPR / department's SOPs. · Collaborate with DPO on data Protection Impact Assessment when introducing new systems or processes to ensure privacy risks are mitigated at the outset. Technical Skills Required - Proficient in common operating systems (Windows 11 and Linux, Server 2016 and later) - Providing AV support for branches - Software proficiency – O365, Onedrive, Teams, Sharepoint, Bloomberg, FXT, SEP, SEE, ME Endpoint Protection, Murex, Swift, 1AML, SIBS, GFMS, COP, Refinitiv, Syncovery, SQL Server, Paxton, VBR, VRO and VeeamOne - Proficient in Imaging windows machines, image creation & management, GPO, and AD - Networking Fundamentals – DNS, DHCP, TCP/IP, and LAN/WAN. - Good understanding of Vmware; ESXI, vSphere, vCenter, Fortigate Firewalls, Cisco Switches - Good understanding of patching practices and troubleshooting - Install, configure, and maintain desktops, laptops, printers, Phones/Mobiles and other IT equipment. - AV support (conference phones, Logitech meeting room solutions etc.) - Proficient in programming languages - Project management - Data analysis and reporting Bachelor or Master's degree or professional qualification in relevant discipline (IT/Information Systems/Computer Science/Technology/Programming/Information Science/System Engineering/Computing) This is a 5 days in the office role in Central London. Salary for this role will be around £55K - £60K. Do send your CV to us in Word format along with your salary and availability.
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Freelance
CDI

Offre d'emploiExpert Sécurité Réseau NAC – Cisco ISE / Fortinet - TOULOUSE

Ewolve
Publiée le
Cisco
Cybersécurité
Fortinet

2 ans
40k-45k €
400-550 €
Toulouse, Occitanie
Notre client, un grand compte du secteur bancaire, recherche un(e) Expert(e) Sécurité Réseau pour intégrer son équipe Sécurité Réseau Utilisateur. La mission consiste à participer activement aux projets de déploiement de nouveaux sites et à renforcer la sécurité du périmètre utilisateur, en s'appuyant principalement sur les technologies Cisco ISE (NAC) et, en complément, sur les politiques de filtrage Fortinet (FortiGate). Le consultant recherché est un profil technique polyvalent, capable de concevoir et déployer des solutions de sécurité (mode BUILD) tout en garantissant leur stabilité au quotidien (mode RUN). Missions principales – NAC Cisco ISE (impératif) : Piloter le déploiement de la solution NAC sur de nouveaux sites Mener les projets d'évolution et d'automatisation de l'infrastructure NAC Définir et mettre en œuvre le profiling des terminaux (Endpoint Profiling) Proposer de nouvelles solutions/configurations pour renforcer la sécurité NAC Assurer le support avancé : analyse des demandes, troubleshooting des incidents Gérer les modifications de la politique de filtrage Missions complémentaires – Firewalling Fortinet : Implémenter les matrices de flux selon les besoins des projets Créer des matrices de flux à partir des logs firewall Diagnostiquer les dysfonctionnements et proposer des solutions pérennes Améliorer les performances et l'exploitabilité (automatisation, bonnes pratiques) Documenter l'exploitation pour faciliter le transfert vers l'équipe RUN Firewall
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Freelance
CDI

Offre d'emploiArchitecte Sécurité Réseaux

VISIAN
Publiée le
Fortinet
IPv4
IPv6

1 an
Paris, France
ContexteLe bénéficiaire souhaite une prestation d'accompagnement dans la contribution aux projets de transformation autour des infrastructures d'accès distants, des firewalls, de l'anti-intrusion, également à d'autres programmes autour de la cyber sécurité. MissionsDéfinition des standards et des architectures de référence et garantie de leur intégration et adaptation aux nouvelles architectures telles que le Cloud (hybride ou publique) dans le respect des exigences de sécurité (GDPR, LPM, …) Élaboration et évolution des roadmaps des produits : nouvelles solutions et fonctionnalités, nouvelles gammes hardware et versions software, … Validation dans les environnements de LAB des nouvelles gammes HW et des nouvelles versions SW et contribution à leur intégration dans les outils d'exploitation Rédaction de la documentation d'architecture, d'installation/migration, d'exploitation… (HLD, LLD, Admin Guide, consignes de résolution d'incidents, …) Accompagnement des métiers dans la mise en œuvre de nouveaux projets ou services Assurance du support N3 sur les incidents (investigation avancée, contact des éditeurs, documentation et accompagnement dans l'implémentation des solutions, …) Audition des infrastructures et proposition des plans d'actions adéquats pour optimiser et fiabiliser les architectures et services TechniquesArchitecture et ingénierie du service d'accès distants : Gateways VPN, User identity, IAM, Filtrage, … Architectures et ingénierie Firewalls (physiques et virtuels) : solutions de plusieurs fournisseurs majeurs du marché Console de management firewalls : FMGR/FAZ, Panorama, MDS/MDSL Architecture et ingénierie FortiOs, Palo Alto, Check Point EndPoint Check Point, FortiClient Architecture des infrastructures accès distants (authentification, tunneling, VRF, NAC, …) Déploiement des solutions Cisco : Gateway VPN SSL ASA, Client VPN AnyConnect Authentification multi-facteurs (MFA) (machine, utilisateurs, ) Authentification et filtrage dynamique des utilisateurs Solutions d'anti-intrusion IDS/IPS sur les technologies Fortinet et Palo Alto VPN C2S, S2S, IPsec, SSL Architectures LAN, MPLS, TCP-IP, NAT, NAC, routage... IPv4, IPv6, http, http2, https, TLS, Socks, DNS, … Troubleshooting et analyse des traces réseaux CertificationsCCIE Security Cisco ASA Specialist NSE 4 - Fortinet Security Professional NSE 5 - Fortinet Network Security Analyst NSE 7 - Fortinet Enterprise Firewall NSE 8 - Network Security Expert PCNSA - Palo Alto Networks Certified Network Security Administrator PCNSE - Palo Alto Networks Certified Network Security Engineer PCSAE - Palo Alto Networks Certified Security Automation Engineer
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Freelance

Mission freelanceNetwork Engineer – Milton Keynes and Remote

Nexus Jobs Limited
Publiée le

£300-400
Milton Keynes, Angleterre, Royaume-Uni
Network Engineer – Milton Keynes and Remote Our Client is seeking to recruit a Network Engineer with at least 7 to 10 years proven hands-on expertise. Plan and implement network transformation across 43 UK sites to support a rollout of 1 to1 Devices to students. Support the design and implement of layer 3 network enhancement, additional WiFi Access Points, and the deployment of new firewalls. Peer review the proposed design and configuration and provide documentation in line with departmental standards. Manage the Network Changes into support. Assess existing network IP address schema and DHCP scope Plan an expansion to accommodate additional network devices Test solution, connectivity, and routing Deploy new IP address schema across all sites Document & Transition to Support Assess location and AP density to guarantee performance with increase in concurrent connections Plan and position additional APs to maintain network performance Deploy APs and test performance Document & Transition to Support Firewalls Assess existing firewall configuration including rules, routers and VPNs Build new ruleset template for deployment across estate Test firewall configuration Deploy hardware appliances and configuration Document & Transition to Support Policies & Procedures To comply with safeguarding policies, procedures and code of conduct To demonstrate a personal commitment to safeguarding and student/colleague wellbeing To ensure that any safeguarding concerns or incidents are reported appropriately in line with policy To engage in safeguarding training when required Multi-site projects Meraki APs HP/Aruba Switches Smoothwall Firewalls Must have proven expertise in Network Design, Network Routing, Switching, Wireless and DHCP/DNS and Network Security Excellent interpersonal skills. Must have a degree in Computer Science or equivalent coupled with a CCNA or equivalent. Any experience and understanding of the Education sector would be very beneficial for this assignment. Must have WAN, LAN, VLAN Design & Implementation along with Firewall Setup, configuration & Management. You will have ITIL certification along with experience of ITIL practices. The rate for this assignment is circa £300 - £400 per day. This is a 6 month assignment initially. The Client has offices in Milton Keynes – you will need to attend meetings from time to time in Milton Keynes – but the role can be worked remotely. Please send your CV to us in Word format along with your daily rate and availability.
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Offre d'emploiSenior IT Infrastructure & Systems Lead

Nexus Jobs Limited
Publiée le
Administration Windows
Center for Internet Security (CIS)
LAN

£70k-75k
Cité de Westminster, Royaume-Uni
Senior IT Infrastructure & Systems Lead Our Client a bank, in Central London are looking for an experienced IT Infrastructure professional who is ideally looking for their next challenge in a dynamic and regulated financial services environment. We are seeking a highly skilled Senior IT Infrastructure Officer to lead the management, security, and continuous improvement of our enterprise IT infrastructure. The Senior IT Infrastructure Officer will be playing a key role in ensuring the availability, resilience, and performance of critical systems while supporting technologies across servers, networks, cloud services, cybersecurity, and business-critical financial applications. The candidate must have strong technical expertise in Windows/Linux, VMware, Microsoft 365, networking, cybersecurity, and infrastructure management who also enjoys solving complex challenges and driving operational excellence. Must have 7 years' experience in enterprise infrastructure, ideally within banking or financial services, and be passionate about delivering secure, reliable IT services.. The role will be Monday to Friday, 9:30am to 5:30pm and reporting into the Head of IT & Data. Due to the nature of the role, the individual is expected to work in our offices, 5 days per week, during their probationary period This role is totally hands-on. Role Description The Senior IT Infrastructure & Systems Lead is a full-time hybrid role based in London, with flexibility for some work-from-home arrangements. This role is responsible for overseeing the day-to-day operation, maintenance, and improvement of the company's IT infrastructure, including networks, servers, and core systems. The person in this role will lead and mentor technical staff, manage system performance and availability, and coordinate responses to incidents and service requests. Typical tasks include monitoring network and system health, implementing security measures, resolving technical complex issues, planning upgrades, and collaborating with stakeholders to align technology solutions with business needs. The role also involves vendor management, documentation of infrastructure and procedures, and contributing to IT strategy and roadmap decisions. Qualifications · Candidates should possess strong skills in Network Administration and Information Technology for managing and optimizing infrastructure and systems. · Candidates should possess solid Technical Support and Troubleshooting skills to diagnose, resolve, and prevent complex IT issues. · Candidates should possess expertise in Network Security to implement, monitor, and improve security controls and practices. · Extensive experience in leading IT infrastructure projects, including planning, implementation, and migration activities. · Proven ability to manage and mentor IT teams, with strong communication and stakeholder management skills. · Experience with server and cloud technologies, virtualization, backup and recovery, and IT monitoring tools. · Relevant professional certifications (eg, CompTIA Network+, CCNA, MCSE, or similar) are beneficial. · Bachelor's degree in Information Technology, Computer Science, or a related field, or equivalent practical experience. Infrastructure & Systems Management · Administer, maintain, and optimize Windows and Linux server environments. · Manage VMware virtualized infrastructure (vSphere 8 and above). · Oversee enterprise backup and disaster recovery solutions using Veeam Backup & Replication. · Manage Veeam ONE monitoring and Veeam Recovery Orchestrator (VRO) environments. · Administer endpoint security and encryption solutions, including Symantec Endpoint Protection (SEP) and Symantec Endpoint Encryption (SEE). · Support endpoint DLP, SIEM, and security monitoring tools (eg, Splunk, Tenable). · Manage patching processes using ManageEngine Patch Manager Plus. · Support Microsoft 365 services and related cloud technologies. · In depth understanding of Cyber ​​security · Monitor system performance, capacity, availability, and infrastructure health. · Ensure compliance with IT governance, security policies, and operational standards. End-User Computing & Branch Support · Provide advanced desktop, laptop, printer, Mobile device (iOS) and branch office IT support. · Deliver AV support for meeting rooms, conferencing, presentations, and collaboration systems. · Manage OS deployment, imaging, image creation, maintenance, and software packaging. · Administer Active Directory (AD), Group Policy Objects (GPOs) and user provisioning and NTFS permissions. · Support Microsoft 365 applications including Outlook, Teams, OneDrive, and SharePoint. · Resolve technical incidents and service requests in line with agreed SLAs. Enterprise Applications & Financial Systems Support · Support and administer business-critical applications, including: · Bloomberg FXT and Refinitiv Eikon, Murex Treasury System, SWIFT Alliance Access (SAA), 1AML, SIBS, GFMS, COP · Support enterprise file synchronization and replication solutions (eg, Syncovery, other SFTP). Networking • Configure and support Cisco switches and routers. • Administer FortiGate firewall environments. • Strong network fundamentals: DNS, DHCP, TCP/IP, LAN/WAN, Routing and connectivity troubleshooting. Monitor network performance, availability, and security posture. Security & Endpoint Management · Support vulnerability management using tools such as Tenable. · Manage security monitoring and log analysis tools (eg, Splunk). · Perform SSL/TLS certificate lifecycle management using OpenSSL. · Create and manage CSRs, certificate chains, and private keys. · Ensure adherence to cybersecurity policies, standards, and regulatory requirements. · Support physical access control systems (eg, Paxton) Operating Systems · Windows 11 · Windows Server 2019/2022 (or equivalent enterprise environments) Red Hat Linux Infrastructure & Virtualization · VMware vSphere / vCenter (v8.0.3 and above) Veeam Backup & Replication Veeam ONE, VRO Microsoft Office 365 · ManageEngine Patch Manager Plus SaaS solutions SQL Server Security · Symantec Endpoint Protection (SEP) · Symantec Endpoint Encryption (SEE) SentinelOne – EDR/XDR Endpoint DLP solutions Firewall administration · Vulnerability management tools (eg, Tenable) SIEM tools (e.g., Splunk) Networking Cisco Switches and Routers · FortiGate Firewalls · LAN/WAN networking and routing Hardware & Storage Dell PowerEdge Servers · Dell PowerVault SAN Storage Education Bachelor or Master's degree or professional qualification in relevant discipline (IT/Information Systems/Computer Science/Technology/Programming/Information Science/System Engineering/Computing) The role is based in Central London and initially will be 5 days per week in the office. This is a 12 month FTC position. The salary for the role will be around £70K - £75K. Do send your CV to us in Word format along with your salary and availability.
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Freelance
CDI

Offre d'emploiExpert Sécurité Réseau NAC/ Cisco (H/F)

STORM GROUP
Publiée le
Cisco
Fortinet

3 ans
45k-50k €
520 €
Toulouse, Occitanie
Contexte : La mission concerne l'accompagnement d'un Expert Sécurité Réseau – périmètre utilisateur, spécialisé en Network Access Control (NAC Cisco ISE). L'objectif est de renforcer la sécurité des sites utilisateurs, d'accompagner les déploiements de nouveaux sites et d'améliorer les politiques de sécurité réseau. Le consultant interviendra au sein d'une équipe Réseau & Sécurité, avec un périmètre couvrant NAC, firewalling et proxys, incluant des interventions en HNO et des astreintes Missions : Objectif globalAccompagner l'expert Sécurité Réseau dans le renforcement des politiques NAC Cisco ISE et dans les projets de sécurisation des sites utilisateurs. 1. Sécurité NAC – Cisco ISE (Impératif)BUILD : Piloter le déploiement de la solution NAC sur de nouveaux sites. Mener les projets d'évolution et d'automatisation de l'infrastructure NAC. Définir et mettre en œuvre le profiling des terminaux (Endpoint Profiling). Proposer de nouvelles configurations pour renforcer la sécurité autour du NAC. RUN : Assurer le support avancé : analyse, diagnostic, troubleshooting. Gérer les modifications sur les politiques de filtrage NAC. 2. Firewalling – Fortinet FortiGate (Appréciable)BUILD : Implémenter les matrices de flux pour les besoins projets. Construire des matrices de flux à partir des logs firewall. Diagnostiquer les dysfonctionnements et proposer des solutions pérennes. Améliorer les performances et l'exploitabilité (automatisation, bonnes pratiques). Documenter l'exploitation pour faciliter l'intégration des nouvelles solutions par l'équipe RUN Firewall. Conditions spécifiquesInterventions en Heures Non Ouvrées (HNO) pour les mises en production. Participation aux astreintes réseau & sécurité (NAC, Firewalling, Proxys).
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Freelance

Mission freelanceIngénieur système et réseaux N3

MEETSHAKE
Publiée le
Active Directory
Linux
VMware

8 mois
Centre-Val de Loire, France
Dans le cadre du renforcement de ses équipes IT, nous recherchons pour l'un de nos clients grands comptes un(e) Expert Systèmes & Réseaux Senior N3. Vous interviendrez sur des projets d'infrastructure, d'administration et d'évolution du système d'information au sein d'un environnement technique exigeant et à forte disponibilité. Missions Vos principales responsabilités seront les suivantes : Intégrer de nouvelles solutions au sein du système d'information. Conduire et coordonner des projets techniques d'infrastructure. Piloter les prestataires intervenant sur les environnements techniques. Réaliser des études techniques et contribuer aux choix d'architecture. Administrer et exploiter les infrastructures systèmes et réseaux. Assurer le maintien en conditions opérationnelles des plateformes. Intervenir sur des incidents complexes ou critiques. Concevoir et appliquer les règles d'exploitation et de supervision. Rédiger la documentation technique et les procédures d'exploitation. Accompagner les utilisateurs et les équipes internes sur les sujets techniques. Environnement techniqueSystèmes Windows Server Active Directory GPO Microsoft Linux Virtualisation & Supervision VMware Centreon Scripting PowerShell VBScript Batch Réseaux TCP/IP VLAN Firewall LAN Équipements Meraki Alcatel Bases de données Microsoft SQL Server MySQL PostgreSQL Oracle 4D
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Freelance

Mission freelanceExpert sécurité Réseau NAC Cisco ISE

Deodis
Publiée le
Cisco Identity Services Engine (ISE)

12 mois
500 €
Toulouse, Occitanie
Mission sur site à Toulouse, 2/3 jours de télétravail / semaine Expert Sécurité Réseau périmètre utilisateur périmètre Network Access Control (NAC Cisco ISE) La mission principale consiste à participer activement aux projets de déploiement de nouveaux sites et à renforcer la sécurité des sites utilisateur, en s'appuyant sur les technologies Cisco ISE (NAC) et les politiques de filtrage firewalls Fortinet (FortiGate). Le candidat idéal est un expert technique polyvalent, capable de concevoir et de déployer des solutions de sécurité (mode BUILD) tout en garantissant leur stabilité au quotidien. Missions principales : 1. Impératif maitrise domaine Sécurité NAC (Cisco ISE) BUILD : Piloter le déploiement de la solution sur de nouveaux sites. Mener les projets d'évolution et d'automatisation de l'infrastructure NAC. Définir et mettre en œuvre le profiling des terminaux (Endpoint Profiling). Proposer de nouvelle solution / configuration pour améliorer la sécurité autour du NAC RUN : Assurer le support avancé : analyse des demandes, troubleshooting des incidents. Gérer les modifications sur la politique de filtrage. Missions complémentaire : 2. connaissance Domaine Firewalling (Fortinet FortiGate) BUILD : Implémenter les matrices de flux pour répondre aux besoins des projets. Créer des matrices de flux à partir des logs Firewall Diagnostiquer les dysfonctionnements, proposer des corrections et des solutions pérennes. Proposer et mettre en œuvre des solutions pour améliorer les performances et l'exploitabilité (automatisation, bonnes pratiques). Documenter l'exploitation pour faciliter l'exploitation et l'intégration des nouvelles solutions pour l'équipe de RUN Firewall
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CDI

Offre d'emploiNetwork Team Lead Operations

KOLABS Group
Publiée le
Aruba
Cisco
Cisco Meraki

60k-85k €
Paris, France
Nous recherchons pour le compte de notre client - acteur du secteur du luxe - un responsable d'équipe réseau en afin de gérer la criticité et la complexité croissantes des services de télécommunications et des infrastructures partagées. La mission s'inscrit au sein de la DSI Holding et est rattachée au responsable IT Operations. Elle couvre l'ensemble des réseaux LAN, WAN, Internet ainsi que la sécurité opérationnelle des sites de la Holding et des entités rattachées. Le poste inclut également le support réseau des applications diffusées auprès des différentes entités du groupe. Le poste est à pourvoir exclusivement en CDI au sein de notre ESN. 🎯 Principales missions : - Superviser les activités RUN (incidents, problèmes, changements, configurations) - Manager une équipe réseau (2 à 4 experts) et piloter les priorités - Assurer la coordination avec les équipes Architecture, infogérants et partenaires - Piloter les projets réseau (déploiement, migration, coordination technique) - Garantir la qualité de service et l'expérience utilisateur - Mettre en place et améliorer les processus ITIL (incident, change, problem) - Contribuer aux choix techniques et à l'évolution des architectures réseau - Assurer la gestion des risques, des capacités et des configurations 🌐 Environnement technique : LAN / WAN / WIFI / 5G / Internet Sécurité réseau (Firewall, IPS, Proxy…)
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CDI

Offre d'emploiInformation Security Manager

Nexus Jobs Limited
Publiée le

£60k-75k
Grand Londres, Royaume-Uni
Information Security Manager Role Description This is a full-time role as an Information Security Manager for Bank in Central London. The Information Security Manager will be responsible for day-to-day tasks related to information security management, including implementing and maintaining Information Security Management Systems (ISMS), ensuring cybersecurity and network security, and protecting sensitive information. This is a hybrid role, based in London with the flexibility for some remote work. Qualifications Information Security Management, ISMS, and Cybersecurity skills Network Security and Information Security knowledge Experience in implementing and maintaining ISMS Proficient in identifying and addressing information security vulnerabilities Strong analytical and problem-solving skills Excellent communication and interpersonal skills Certifications such as CISSP, CISM, or equivalent are preferred Bachelor's degree in Information Security, Computer Science, or related field Information Security Manager role (permanent) reporting into Head of IT (CIO | CISO) Need an individual with a strong hands on network and security background Cisco networking Cisco firewalls (Firepower / Threat Detection) Palo Alto firewalls SIEM experience (Logarithm desirable) Web proxy (Forcepoint desirable) Governance skills Policy writing / reviewing Reporting KPI monitoring Certifications like CCNP / CISM would be desirable but strong experience is preferable. The Client is based in Central London and the position is hybrid - 3 days in the office every week. Salary circa £60K - £75K + Benefits. Please do send your CV to us in Word format along with your salary and notice period.
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Les métiers et les missions en freelance pour Firewall

Consultant·e en cybersécurité

Le/ La consultant·e en cybersécurité utilise les firewalls pour analyser les vulnérabilités, recommander des solutions de protection et implémenter des politiques de sécurité afin de protéger les infrastructures des entreprises contre les attaques.

Ingénieur·e en cybersécurité

L'ingénieur·e en cybersécurité configure, surveille et optimise les firewalls pour protéger les réseaux et systèmes d’information contre les menaces externes et internes.

Administrateur·rice réseaux

L'administrateur·rice réseaux configure les firewalls dans le cadre de la gestion des réseaux pour garantir leur sécurité et prévenir les intrusions non autorisées.

Responsable sécurité informatique (CISO)

Le/ La responsable sécurité informatique supervise la gestion des firewalls dans une organisation, assurant une protection optimale des données sensibles et la conformité aux normes de sécurité.

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