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Mission freelanceInformation Security Manager with Network Engineering Skills

Nexus Jobs Limited
Publiée le

£500-650
Grand Londres, Royaume-Uni
Information Security Manager with Network Engineering Skills Our Client is 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 (e.g., 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 (e.g., 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), MITRE 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
CDD

Offre d'emploiSenior IT Infrastructure & Systems Lead

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

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 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. 3. 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). 4. 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'emploiIT Support Analyst with 2nd Level Treasury Systems Support – FIS Integrity

Nexus Jobs Limited
Publiée le
ITIL
MySQL
ServiceNow

£75k-85k
Dublin, Leinster, Irlande
Operational Platform Monitoring & Treasury Process Assurance Ensures uninterrupted execution of Treasury‑critical processes and protection of daily cash positioning, payment execution, and cut‑off compliance. Monitor Treasury systems, interfaces, and scheduled jobs (EOD, SOD, intraday processes)  Oversee payment flows across SWIFT, API, EBICS, and bank platforms  Validate inbound data (bank statements, market data, trade feeds)  Execute operational runbooks for failed processes and controlled reprocessing  Perform daily checks and controls including cash position validation and transaction completeness Incident Management & Treasury Service Continuity Protects Treasury operations by restoring service rapidly when incidents threaten payments, liquidity visibility, or regulatory obligations.  Log, classify, and prioritise incidents in ServiceNow based on Treasury business impact  Perform structured triage and initial diagnosis  Resolve standard issues within SLA using approved knowledge base and runbooks  Escalate complex or cross‑system issues to L3 with full technical and business diagnostic context  Support major incident management processes and incident bridge calls Cash, Position & Exposure Data Integrity Ensures integrity of cash, position, risk, exposure, and hedge data used in Treasury decision‑making, external reporting, and audit processes.  Validate transaction, position, balance, and exposure data across Treasury systems  Identify and resolve discrepancies impacting liquidity confidence and risk accuracy Support reconciliation processes and ensure audit‑ready completeness of financial data Testing & Release Support with Treasury Assurance Ensures Treasury readiness and outcome protection for system changes and SaaS releases.  Support execution of business testing, UAT, and regression testing  Validate operational outputs resulting from system changes  Assist in business readiness checks prior to release or cutover Essential  2–5 years' experience in 1st / 2nd Line Treasury systems or financial systems support  Understanding of Treasury processes (payments, liquidity, settlements)  Experience with incident management and ITIL processes  Strong analytical and troubleshooting skills Desirable  Experience in FIS Integrity System  Basic SQL or data interrogation capability  Exposure to SWIFT, APIs, and integration technologies  Experience supporting UAT or testing cycles Qualifications  Degree in Finance, IT, or related discipline  ITIL Foundation (preferred) · Experience with FIS Integrity or similar Treasury and Risk Management systems is highly desirable · A proactive attitude and ability to adapt to a hybrid work environment This will be a hybrid role with 3 days in the office in Dublin Ireland. The salary for this role will be in the range £70K - £85K. Do send your CV to us in Word format along with your salary and availability.
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Freelance
CDI
CDD

Offre d'emploiAdministrateur Système et Réseau expert

SARIEL
Publiée le
AIX (Advanced Interactive eXecutive)
Ansible
GitLab CI

12 mois
45k-60k €
350-470 €
Châtillon, Île-de-France
Bonjour, Nous recherchons pour notre client basé en région parisienne un Administrateur Système et Réseau expert (plus de 10 ans d'expérience). Objectif global - Administrer les environnements et composants Systèmes AIX / Linux Contrainte forte du projet Administration d'environnements de Production / Interventions HNO / Astreintes Les livrables sont Maintien en condition opérationnelle des environnements AIX / Redhat / et conteneurs Expertise (Audit / Accompagnement / Tunning) DevOps - Automatisation Compétences techniques RHEL(+Satellite), SUSE, Pacemaker Cluster, DRBD - Expert - Impératif AIX : NIM, PowerVM (VIO Server), HMC - Confirmé - Impératif Gitlab CI, Vault, Harbor, Nexus, Graylog/GitOps - Confirmé - Impératif Ansible, Python, AWX, Terraform, Shell script - Expert - Impératif Connaissances linguistiques Anglais Professionnel (Impératif) Description détaillée 1 - Gestion des incidents 2 - Support et Assistance 3 - Maintien en condition opérationnelle des environnements systèmes AIX / Liinux / CentOS / SUSE4 - Gestion des Performances 5 - Audit et expertise 6 - Automatisation des Tâches Date de démarrage 03/08/2026 Lieu de réalisation Chatillon 92 ou Bondoufle 91 Déplacement à prévoir non Le projet nécessite des astreintes Oui Nombre de jours souhaitables sur site 3 jours par semaine La sous-traitance (freelance, ESN ou autre) sur ce projet est Autorisée Dans le cas où vous êtes intéressé par ce poste, pourriez-vous SVP m'envoyer votre CV au format Word en indiquant votre disponibilité ainsi que vos prétentions salariales ou votre tarification journalière si vous êtes indépendant ?
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Freelance
CDI

Offre d'emploiIngénieur DevSecOps H/F

SQUARE ONE
Publiée le
Administration linux
Ansible
AWS Cloud

1 an
48k-55k €
500-600 €
Île-de-France, France
Au sein d'une équipe DevSecOps, vous participerez à la sécurisation, l'automatisation et l'industrialisation des plateformes techniques tout en accompagnant les équipes de développement dans l'amélioration continue de leurs pratiques. Vous interviendrez sur des environnements Cloud modernes et des infrastructures critiques nécessitant un haut niveau d'exigence en matière de disponibilité, de sécurité et de performance. Vos principales responsabilités seront notamment : Industrialisation des plateformesConcevoir, maintenir et optimiser les pipelines CI/CD. Industrialiser les déploiements applicatifs et infrastructures. Automatiser les processus de build, de tests et de déploiement. Participer à l'amélioration continue des plateformes DevOps. DevSecOpsIntégrer la sécurité dès la conception des solutions (Security by Design). Mettre en œuvre les bonnes pratiques DevSecOps. Réaliser les analyses de vulnérabilités et suivre les plans de remédiation. Sécuriser les pipelines de déploiement et les infrastructures. Cloud & Infrastructure as CodeDéployer et administrer des infrastructures Cloud. Concevoir des infrastructures via Terraform et Ansible. Participer aux projets de migration et de modernisation des plateformes. Garantir la fiabilité et la résilience des environnements. Kubernetes & ConteneurisationAdministrer des clusters Kubernetes. Industrialiser les déploiements conteneurisés. Participer à la sécurisation et à l'optimisation des plateformes Kubernetes. Observabilité & ExploitationMettre en place les outils de supervision et de monitoring. Optimiser les performances des plateformes. Participer à la résolution des incidents de production. Contribuer à l'amélioration de la disponibilité des services. CollaborationVous travaillerez quotidiennement avec : les équipes de développement ; les architectes Cloud ; les experts cybersécurité ; les équipes Infrastructure ; les équipes Production et Exploitation.
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CDD

Offre d'emploiSenior IT Infrastructure Officer

Nexus Jobs Limited
Publiée le
Network and Information System Security (NIS)
Office 365
Veeam Backup & Replication

30 jours
£70k-75k
Cité de Westminster, Royaume-Uni
Senior IT Infrastructure Officer 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 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. 3. 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). 4. 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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Offre premium
CDI
Freelance

Offre d'emploiAdministrateur Plateforme CI/CD - Usine Logiciel (Monaco)

SYNERGIE TECHNOLOGIES
Publiée le
Ansible
CI/CD
Gitlab

3 ans
Nice, Provence-Alpes-Côte d'Azur
🎯 Le contexte Dans le cadre d'un ambitieux programme de transformation digitale, nous recherchons un Administrateur Plateforme CI/CD pour prendre en charge l'administration, la sécurisation et l'évolution d'une plateforme DevOps stratégique, au cœur d'un système d'information critique. Vous évoluerez dans un environnement on-premise, où vous serez responsable de l'administration de l'usine logicielle utilisée par l'ensemble des équipes de développement. Véritable garant de la plateforme, vous veillerez à sa disponibilité, sa sécurité, ses performances et son évolution continue. Le poste est basé à Monaco et nécessite une (re)localisation à proximité (jusqu'à 3 jours de télétravail par semaine). 🛠️ Les missions Administrer et maintenir l'usine logicielle (GitLab, Jenkins, Nexus, SonarQube, Redmine) Assurer les montées de version et appliquer les correctifs de sécurité Garantir la disponibilité, la sécurité et les performances de la plateforme Gérer les sauvegardes, restaurations et procédures de PRA Administrer les habilitations et les droits d'accès Mettre en place et maintenir les chaînes CI/CD et les playbooks Ansible Concevoir et optimiser les pipelines d'intégration et de déploiement continus Participer à la rédaction de la documentation technique et des dossiers d'homologation Accompagner les équipes dans l'adoption des bonnes pratiques DevOps Participer aux mises en production et à l'amélioration continue de la plateforme Collaborer avec les équipes Développement, Infrastructure, Architecture, Réseau et Sécurité ✅ Les informations clés 📍 Localisation : Monaco 🗓️ Démarrage : ASAP 🖥️ Jusqu'à 3 jours de télétravail par semaine
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CDI

Offre d'emploiPlatform Engineer - Kubernetes, IaC & CI/CD - (H/F)

NEURONES IT
Publiée le
Azure Kubernetes Service (AKS)
DevOps
IAC

40k-65k €
Île-de-France, France
Vous rejoindrez une équipe d'experts pour construire, fiabiliser et faire évoluer une plateforme cloud & conteneurisée au cœur d'un grand compte bancaire. Votre terrain de jeu : Kubernetes/AKS, Infrastructure as Code, CI/CD, observabilité et automatisation, sur des environnements à forts enjeux de résilience et de performance. Vos responsabilités (build & run plateforme) CI/CD & delivery engineering Concevoir, industrialiser et maintenir des pipelines CI/CD (GitLab CI/CD, Jenkins) Standardiser des templates, gérer les artefacts (Nexus) et renforcer la qualité : tests, scans, promotions, versioning Automatiser les déploiements applicatifs (rolling/blue-green/canary selon le contexte) Infrastructure as Code & configuration Déployer et faire évoluer l'infrastructure via Terraform (modules, state, workspaces, bonnes pratiques) Automatiser la configuration avec Ansible / AWX (et/ou Puppet selon le périmètre) Contribuer à la standardisation : conventions, revues de code, documentation, CI sur IaC Kubernetes / AKS & écosystème Exploiter et fiabiliser des clusters Kubernetes / AKS : upgrades, scaling, quotas, RBAC Déployer et maintenir des composants via Helm (charts, values, packaging) Assurer l'intégration des workloads : ingress, configuration, secrets, policies (selon l'outillage en place) Observabilité, fiabilité, incidents Mettre en place et améliorer l'observabilité : Prometheus, Grafana, ELK Assurer le troubleshooting N2/N3 : diagnostics de performance, latence, saturation des ressources, erreurs de déploiement Contribuer à la fiabilisation : post-mortems, RCA, plans d'actions, SLO/SLA (selon le modèle d'équipe) Stack & outils que vous maîtrisez (ou que vous adorerez retrouver chez nous) : CI/CD : Git, GitLab CI/CD, Jenkins, Nexus IaC / Config : Terraform, Ansible, AWX, Puppet Containers : Docker, Kubernetes, Helm, AKS (KubeFlow selon projets data) Scripting : Python, Bash, PowerShell, JavaScript Cloud : Azure (AKS) et/ou AWS/GCP Monitoring/Logs : Prometheus, Grafana, ELK
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