Find your next tech and IT Job or contract Network

Knowledge, skills, experience and qualifications a. Skills in Network Monitoring and Traffic Analysis to maintain performance, security, and service reliability. b. Strong experience with Hardware and Software Configuration, supporting efficient deployment and lifecycle management. c. Competencies in producing Technical Documentation and knowledge sharing to enhance team knowledge and capability. d. Able to support Strategic Network Infrastructure Planning to drive long term improvement and resilience. e. Effective in Stakeholder Engagement and Communication, fostering trusted relationships across technical and non-technical groups. f. Proven experience in exploiting ESXi 8.0.3 g. Proven experience in exploiting vSphere 8.0.3. Due to the nature and urgency of this post, candidates holding or who have held high level security clearance in the past are most welcome to apply. Please note successful applicants will be required to be security cleared prior to appointment which can take a minimum 10 weeks. LA International is an award-winning partner of choice for many of the world's most influential companies and government organisations. Holding Enhanced Government Security Accreditation, we are recognised as the European market leader in the delivery of Security Cleared talent to organisations that demand the very highest levels of security, compliance and assurance. An award-winning organisation, having secured the prestigious Queens Award for Enterprise: International Trade over multiple years. We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported. We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply. If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience. Please Note: If a high volume of applications is received, only candidates shortlisted will be contacted.

The Space, Defence and Intelligence business unit in CGI is a true IT Systems Integrator. We work, build, and operate bespoke, technically complex, mission-critical systems which help our clients keep us all safe and secure. We bring innovation to our clients using proven and emerging technologies, agile delivery processes and our deep expertise across the breadth of space, defence, intelligence, aerospace and maritime, all underpinned by our end-to-end cyber capability. We work collaboratively with global technology companies, cutting edge SMEs and academia to deliver the optimal solution for each client. CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named a UK ‘Best Employer’ by the Financial Times. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI Partner not just an employee. We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces, and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and you’ll be part of an open, friendly community of experts. We’ll train and support you in taking your career wherever you want it to go. Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance. This position will be based on site near Chippenham 5 days a week.

At CGI, you will help design and deliver secure, resilient network solutions that underpin mission-critical systems across the Space, Defence and Intelligence sector. As a Network Engineer, you will enable high-performance, secure connectivity across complex environments, ensuring reliability and compliance. Working with clients, partners and expert teams, you will take ownership of network challenges, apply innovative solutions, and develop your career within a collaborative and supportive environment. The Space, Defence and Intelligence business unit in CGI is a true IT Systems Integrator. We work, build, and operate bespoke, technically complex, mission-critical systems which help our clients keep us all safe and secure. We bring innovation to our clients using proven and emerging technologies, agile delivery processes and our deep expertise across the breadth of space, defence, intelligence, aerospace and maritime, all underpinned by our end-to-end cyber capability. We work collaboratively with global technology companies, cutting edge SMEs and academia to deliver the optimal solution for each client. CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named a UK ‘Best Employer’ by the Financial Times. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI Partner not just an employee. We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces, and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and you’ll be part of an open, friendly community of experts. We’ll train and support you in taking your career wherever you want it to go. Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance. This position will be based on site near Gloucester or in Central London 5 days a week.

Bonjour, Je suis à la recherche d’un Ingénieur systèmes et échanges sécurisés : Missions principales : • Recenser et analyser les flux existants • Assurer la migration des flux vers une nouvelle infrastructure • Configurer les solutions de transfert de fichiers sécurisé (MFT) • Vérifier les ouvertures réseau et assurer la conformité • Coordonner les différentes parties prenantes (IT, métiers, prestataires) • Piloter les bascules en production • Assister à la mise en service des flux migrés • Contrôler le bon fonctionnement des échanges de données • Valider les mises en production • Animer des ateliers techniques • Coordonner les phases de test et de recette • Diagnostiquer et résoudre les incidents • Assurer le suivi des tickets (support interne et éditeur) • Réaliser un reporting régulier et formuler des recommandations

Network Support Analyst Our Client in an international brand of hotels with their first new hotel in the City of London. The role will be to support a user base of around 50 people. You will be supporting technical issues relating to problems with work stations and laptops. Installing and upgrading new software as and when required along new hardware. You must be able to work on your own and report daily to senior management. You will have at least 3 to 5 years network support experience both 1 and 2 line support. Location is the City of London. Salary will be in the range £25K - £30K. Please do send your CV in Word format along with salary and availability details.

Le contexte : Dans un contexte international, notre entreprise gère l'infrastructure système et réseau en tant que service pour l'ensemble de ses filiales. Rattaché(e) à l'équipe IT Corporate Infrastructures, vous rejoignez un environnement technique exigeant et international. Vos missions : Exploitation de l'infrastructure Wi-Fi Exploiter les solutions sans fil dans le respect des politiques IT du groupe Superviser et ajuster les performances de l'infrastructure Gestion des incidents Prendre en charge et qualifier les incidents signalés Suivre les incidents et les escalader si nécessaire Support et accompagnement Apporter un support aux équipes locales Conseiller utilisateurs et managers sur les nouveaux produits déployés et garantir leur satisfaction Former les équipes IT et les utilisateurs clés à ces produits Rédiger et mettre à jour la documentation IT Vous serez rattaché(e) aux Infrastructure Managers.

Nous recherchons un Ingénieur en Sécurité Réseau expérimenté pour rejoindre une équipe performante en infrastructure et sécurité. Ce poste se concentre sur la conception, la mise en œuvre et la gestion d’environnements hybrides sécurisés (sur site + Azure), avec un fort accent sur les technologies Fortinet. Vous jouerez un rôle clé dans la garantie de la sécurité, de la disponibilité et de la performance des services réseau et cloud, tout en soutenant les initiatives de transformation cloud en cours. Concevoir, déployer et gérer des infrastructures réseau sécurisées dans des environnements sur site et Azure Piloter et gérer l’écosystème de pare-feu Fortinet (FortiGate, FortiManager, FortiAnalyzer) Mettre en œuvre les réseaux et contrôles de sécurité Azure (VNets, NSGs, Azure Firewall, WAF, Private Endpoints) Gérer la connectivité VPN (IPSec, SSL) Superviser, dépanner et optimiser les performances réseau (LAN/WAN, cloud et pare-feu) Définir et documenter les architectures réseau (HLD/LLD) et en assurer la validation Configurer les services réseau pour les plateformes cloud (Internet, VPN) Gérer les fournisseurs réseau tiers, y compris les incidents et les mises à niveau Maintenir les environnements réseau virtualisés Azure Assurer une haute disponibilité via une maintenance proactive Collaborer avec les équipes sécurité pour appliquer les politiques et les standards Maintenir les outils internes (supervision, adressage IP, gestion d’inventaire) et contribuer à l’amélioration continue des opérations

Network Engineer London - Hybrid £50,000 - £60,000 + Private Medical + Cash Plan + Progression + Life Insurance + Pension + More Are you an experienced Network Engineer looking for the next step in your career and can speak fluent Mandarin? Do you want to join a global business where you can be a part of some incredible projects with variety and excitement? On offer is the chance to join a global business with over 13 offices worldwide, including Asia, America and of course the UK. With a great work culture, you will be working on cutting edge technology, whilst being given the necessary tools to reach your full potential. In this role, you will collaborate with the network team to manage and maintain hundreds of POP networks with dozens of international service providers. This will involve daily operations, BGP optimisation, POP build out and redesign, and ISP coordination, among other things. The ideal candidate should have a degree or equivalent in a technical field and experience in administering large-scale service networks whilst being CCNP certified. You should possess hands-on experience with BGP networks, strong knowledge of Internet protocols and Ethernet troubleshooting tools, as well as experience in routing and switching. Strong knowledge with TCP/IP, HTTP, VPN etc will be required. You will need to be fluent in English and Mandarin. This is an excellent opportunity to join a world leading business where you will feel part of a team and be able to learn, grow and develop your career to new heights whilst showcasing your skills and experience. The Role: Collaborate with the network team Manage and maintain hundreds of POP networks Work with dozens of international service providers Perform daily operations Optimise BGP Participate in POP build out and redesign Coordinate with ISPs The Person: Degree or equivalent in a technical field CCNP Certified Experience in administering large-scale service networks Hands-on experience with BGP networks Strong knowledge of Internet protocols and Ethernet troubleshooting tools Experience in routing and switching Strong knowledge of TCP/IP, HTTP, VPN, etc. Fluency in Mandarin Rise Technical Recruitment Ltd acts an employment agency for permanent roles and an employment business for temporary roles. The salary advertised is the bracket available for this position. The actual salary paid will be dependent on your level of experience, qualifications and skill set and will be decided by our client, the employer. Rise are not responsible or liable for any hiring decisions made by the end client. We are an equal opportunities company and welcome applications from all suitable candidates.

Key Responsibilities Support, maintain, and optimise a large-scale enterprise campus network environment Troubleshoot and resolve network incidents across wired and wireless infrastructure Work closely with internal IT and Cyber Security teams to ensure network security and compliance Manage and support core, distribution, and access layer networking Assist with network upgrades, improvements, and ongoing transformation initiatives Monitor network performance and ensure high availability across the estate Please click to find out more about our Key Information Documents. Please note that the documents provided contain generic information. If we are successful in finding you an assignment, you will receive a Key Information Document which will be specific to the vendor set-up you have chosen and your placement. To find out more about Real, please visit Real Staffing, a trading division of SThree Partnership LLP is acting as an Employment Business in relation to this vacancy | Registered office | 8 Bishopsgate, London, EC2N 4BQ, United Kingdom | Partnership Number | OC387148 England and Wales

Ingénieur senior en sécurité réseau (pare-feu, sécurité cloud et segmentation réseau) Senior Network Security Engineer (Firewall, Cloud Security & Network Segmentation)Position Overview We are looking for an experienced Senior Network Security Engineer to join a team responsible for securing and maintaining critical enterprise network infrastructures. This role focuses on firewall administration, network traffic filtering, security policy enforcement, incident management, and cloud network segmentation. The successful candidate will contribute to both operational activities and strategic security initiatives while ensuring compliance with security standards and regulatory requirements.Main Responsibilities Review, validate, and implement network access and firewall requests in accordance with security policies. Configure, maintain, and optimize firewall rules across complex enterprise environments. Investigate and resolve network security incidents, connectivity issues, and policy-related disruptions. Provide technical expertise and guidance for infrastructure, security, and transformation projects. Ensure security controls and firewall configurations remain aligned with organizational security standards and industry best practices. Maintain accurate documentation of security configurations, network flows, and operational procedures. Conduct detailed traffic-flow analysis and support audit, compliance, and recertification activities. Contribute to continuous improvement initiatives aimed at strengthening security posture and operational efficiency. Collaborate with cross-functional teams operating in Agile environments. Key Requirements Minimum 5 years of hands-on experience in network security and firewall administration. Strong experience implementing and managing firewall policies and access controls. Proven track record in troubleshooting and incident resolution within enterprise environments. Experience with leading firewall technologies such as Palo Alto Networks and/or Fortinet. Familiarity with IT Service Management platforms, including ServiceNow or equivalent solutions. Solid understanding of networking, security architecture, and enterprise infrastructure principles. Experience with reporting automation, scripting, or data analysis using Python, VBA, or similar tools. Nice to Have Firewall administration and policy optimization. Intrusion Detection and Prevention Systems (IDS/IPS). Cloud security and micro-segmentation technologies. Network security architecture and traffic-flow analysis. Incident, problem, and change management processes. Security compliance, governance, and audit support. Automation and reporting solutions. Other Details Participation in an on-call rotation may be required. Experience in large-scale, highly regulated, or mission-critical environments is considered an advantage.

Dans le cadre d'une intégration définitive chez l'un de nos clients grand comptes, nous sommes à la recherche d'un Administrateur Système et Réseaux N2/3 . Dans un contexte de transformation du SI à l'échelle Monde vous assistez la DSI ainsi que les différents sites dans leur adaptation. À ce titre, vos missions principales sont les suivantes : Partie Exploitation et support informatique (80% du temps) : Assurer le support informatique et résoudre les incidents Suivre, gérer et répondre aux demandes liées à l’infrastructure informatique. Gérer le réseau et le parc serveur. Veiller à l'application des procédures (codification, confidentialité, sauvegarde, sécurité…) Assurer la supervision des systèmes et réseaux.. Partie administration et projets infrastructure (20% du temps) : Projets de consolidations de l’infrastructure des sites locaux dans le datacenter de notre infogéreur. Gestion des réseaux et firewall en lien avec notre prestataire externe. Gestion des serveurs et des infrastructures locales. Gestion de la politique de sécurité du groupe. Administration O365. Définition de l’architecture technique en fonction des projets métier. Gérer des projets d’infrastructure informatique et être force de proposition pour améliorer la sécurité et l’exploitation. Compétences attendues pour ce poste : Connaissances approfondies sur Windows serveur 2008, 2012, 2016 et 2019 Compétences sur SQL Serveur/smtp/ftp/AD et Oracle est un plus Gestion d’un active Directory et des GPO Réseaux LAN et WAN ainsi que des Firewalls. Bonnes connaissances et pratique des méthodologies de Projets. Anglais indispensable pour les comités projets internationaux.

Network Engineer with Security and Cisco – City London Our Client urgently requires a Senior Network Engineer with heavy background in Network Security on Cisco and Microsoft. You must have experience of working in a banking environment. The security and support of the company’s network is paramount. Predominately a support role (BAU) with design of scalable solutions deliverable through projects. Encompassing numerous technologies that benefit high-availability solutions. This role requires a responsible individual who can design and deliver secure networking solutions. Fast thinker who can diagnose, assist others and remediate BAU support issues. Main Aspects of the role: -Work within Infrastructure team in supporting and delivering all aspect of BAU and support services -Design, build and implement firewall solutions from perimeter to DMZ roles -Support IPS deployment for European branches -Develop, maintain and deliver global standards to all networking devices -Remediate Penetration Test results -Ensure seamless migration of network estate to newly adopted security framework General Skills -Experience working within mission-critical environments -Experience in operational deployments -Datacentre cabling and racking of equipment Technical Skills you need to bring to the table: -In-depth knowledge of CISCO including firewalls, switches and routing protocols -In-depth knowledge of supporting a data-centre and branch inter-connectivity -Strong technical skills are essential -Experience of CISCO multi-layer switches and routers, including 6500s -CISCO certification, ideally CCNP -CISCO CSM -VLAN segregation -McAfee HIPS, Trend Micro -Centralised authentication service (AAA) -SafeNet Ethernet Encryptor -RADIUS / RSA -Security certification (advantageous) You will also need to an understanding of the following technologies: VLAN segregation. DMZ. VSS. Failover. OSPF. High availability. CISCO. Palo Alto. Juniper. McAfee IPS. SafeNet. Tripwire. You will ideally be coming with experience from a City based investment bank. Salary for this role is between £50K and £60K plus banking benefits. Please send your CV to us in Word format along with salary and availability.

As a Senior Network Engineer at CGI, you will play a pivotal role in safeguarding and advancing the networks that power our clients’ most critical missions. You will help shape resilient, secure, and scalable infrastructure while contributing to innovative integration and design projects that drive industry transformation. This role offers the chance to take meaningful ownership of complex challenges, collaborate with expert teams, and apply your creativity to deliver future-ready network solutions. Supported by CGI’s strong engineering community, you’ll make a lasting impact across high-value programmes while continuously growing your skills in a dynamic and trusted environment. CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named a UK ‘Best Employer’ by the Financial Times. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI Partner not just an employee. We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces, and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and you’ll be part of an open, friendly community of experts. We’ll train and support you in taking your career wherever you want it to go. Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance.

Senior Network Engineer with Security and Cisco – City London Our Client urgently requires a Senior Network Engineer with heavy background in Network Security on Cisco and Microsoft. The security and support of the company’s network is paramount. Predominately a support role (BAU) with design of scalable solutions deliverable through projects. Encompassing numerous technologies that benefit high-availability solutions. This role requires a responsible individual who can design and deliver secure networking solutions. Fast thinker who can diagnose, assist others and remediate BAU support issues. Main Aspects of the role: -Work within Infrastructure team in supporting and delivering all aspect of BAU and support services -Design, build and implement firewall solutions from perimeter to DMZ roles -Support IPS deployment for European branches -Develop, maintain and deliver global standards to all networking devices -Remediate Penetration Test results -Ensure seamless migration of network estate to newly adopted security framework General Skills -Experience working within mission-critical environments -Experience in operational deployments -Datacentre cabling and racking of equipment Technical Skills you need to bring to the table: -In-depth knowledge of CISCO including firewalls, switches and routing protocols -In-depth knowledge of supporting a data-centre and branch inter-connectivity -Strong technical skills are essential -Experience of CISCO multi-layer switches and routers, including 6500s -CISCO certification, ideally CCNP -CISCO CSM -VLAN segregation -McAfee HIPS, Trend Micro -Centralised authentication service (AAA) -SafeNet Ethernet Encryptor -RADIUS / RSA -Security certification (advantageous) You will also need to an understanding of the following technologies: VLAN segregation. DMZ. VSS. Failover. OSPF. High availability. CISCO. Palo Alto. Juniper. McAfee IPS. SafeNet. Tripwire. You will ideally be coming with experience from a City based investment bank. Salary for this role is between £60K and £70K plus banking benefits. Please send your CV to us in Word format.

IT Technical Network Systems Engineer Our Client is an international company with offices in several countries around the World. They are looking to recruit a talented IT professional with 5 to 7 years solid hands-on expertise as a Technical Network Systems Engineer. The primary role of the IT Technical Systems Engineer is to ensure a smooth , end user support for all users in our Los Angeles office, with specific focus on our user base In the United States. This role requires good customer and client facing skills, with primary efforts on ensuring communication, managing IT software or hardware changes, printers (local and MFD), documentation, and system administration are seamlessly supported and deployed, whether locally or remotely, via phone and/or email. Ability to communicate effectively in English is essential for this role. This role is key towards promoting and representing IT practices, and requires an in-depth knowledge of Apple MAC (IOS), and its supporting desktop applications. Equally essential is a solid understanding and technical awareness of user collaboration tools for conference support, desktop and mobile telephony, asset management tools, File sharing protocols, user permission and folder administration. The following is a list of some of the day-to-day activities for this role: Daily interaction with users at all levels. Support employees and their (Mac) OS X clients, incl. web-based systems, Microsoft, Adobe CS Suite (Photoshop, InDesign), Apple iWork, CAD (SketchUp, Vectorworks, AutoCAD), and Google Suite Applications. Responsible for maintenance and upkeep of our backup Infrastructure, including daily backups for applications, laptops, servers and other designated backup hardware. Responsible for new starter training and inductions (when required), Maintain IT all aspects of IT security systems, including fire alarm. Maintenance and upkeep of Cisco Meraki systems. Collaborate with IT colleagues to manage global application deployments, or updates to desktop or user applications, either via automation or manually. Manage daily user related issues and/or risks and escalate as appropriate. Ensure adequate stock levels of critical components are checked weekly, and stock related documents updated, and ordered. Provide timely report to IT management and key stakeholders on progress of dedicated tasks, or on-going activities, by updating weekly focus report. The Client would like you to bring the following skillsets to the company: Apple MAC Certification an advantage. Microsoft Office 2008+ support essential. MAC OSX Server Administration essential. Adobe application support (Photoshop, Indesign etc), an advantage Exposure to JAMF Mobile Device Management (MDM) an advantage. Google suite support essential (Gmail, G-Storage, G-Docs) Microsoft O365 support an advantage (Exchange, OWA) Exposure to backup applications an advantage. Prior experience in supporting 100+ employees an advantage. Good documentation and analytical skills, with a passion for user satisfaction. Mobile Device support (Iphones, Ipads and Macbook’s) essential Good interpersonal skills, with an ability to develop, and enhance relationships with clients and peers. Open Directory / Active Directory exposure essential There may be occasional travel to other sites in Europe may be required occasionally. The Client is based in Central Los Angeles. The salary for this position is up to $65K per year plus benefits. Please send you CV to us in Word format along with your salary and availability.

Infrastructure Network Support Analyst We are looking for an experienced Network and Infrastructure Support Analyst with at least 5 to 7 years solid hands-on expertise. Must be able to technically as well as manage all the day to day tasks as part of the hands-on aspects of this role. The following are some of the skills required: Strong infrastructure generalist good applications experience on windows platforms Strong AD Windows Server – 2003 upwards Experienced and very strong trouble-shooter InTune a benefit. experience with Application deployment via GPO’s a benefit experience with image deployment methods Milton Keynes base and must be within easy commute. Some UK travel required and international travel possible in future The Client is looking for someone who comes up with the solutions and is pro-active not just the waiting around for orders and direction. The position is based in Milton Keynes – with travel. Please send your CV to us in Word format along with your daily rate and availability.