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Network Administrator Must have an Active DV Clearance Network Administrator Overview Join a small, experienced team responsible for supporting secure network infrastructure within a highly secure operational environment. This role offers the opportunity to deliver network administration, service provisioning, technical support, and operational maintenance across critical services. You will work closely with Service Management teams, customer stakeholders, and Managed Service Providers to ensure reliable, secure, and efficient network operations. The position is ideal for an experienced Network Administrator with strong Juniper networking expertise and a solid understanding of ITIL service management. Network Administrator Responsibilities Monitor network performance and report on the health of network services. Process customer service requests and support the delivery of new network services. Create, deploy, and maintain network configurations. Liaise with Service Management teams and customer representatives to deliver operational services. Provide technical support to Managed Service Providers. Maintain accurate network diagrams and technical documentation. Support annual Crypto Key Fill activities. Update and maintain the Configuration Management Database (CMDB). Participate in an out-of-hours technical support rota on a one week in four basis. Network Administrator Skills and Experience Strong experience administering Juniper network devices. Experience supporting Juniper firewall technologies. Good understanding of ITIL Incident, Problem, and Change Management processes. Experience working with network encryption technologies. Strong troubleshooting and problem-solving skills. Experience supporting secure or highly regulated environments. Understanding of handling sensitive or classified material desirable. Willingness to travel to customer locations when required. To apply, please send your CV by pressing the apply button. Due to high volume of applications, only shortlisted CVs will be contacted. 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 18 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.

Network Developer Must have an active DV Clearance Network Developer Responsibilities Design and develop network solutions to meet evolving customer requirements. Deliver technical changes across global WAN and LAN environments. Configure, support, and troubleshoot network devices across complex infrastructures. Produce and maintain technical documentation including LLDs, Build Guides, and Work Instructions. Liaise with third-party vendors to investigate and resolve technical issues. Support IT Health Check activities and remediate identified vulnerabilities. Provide 3rd and 4th line support for live operational services. Contribute to service improvement, incident resolution, and technical assurance activities. Network Developer Skills and Experience Strong experience designing and implementing secure network solutions. Good knowledge of WAN routing and LAN switching technologies. Experience with MPLS, BGP, IPSec, GRE, and encryption technologies. Strong network troubleshooting and defect resolution capability. Experience configuring enterprise networking equipment. Ability to produce high-quality technical documentation. Experience working with third-party technology suppliers. Understanding of security best practice and vulnerability remediation. Experience supporting operational services within highly secure environments. To apply, please send your CV by pressing the apply button. Due to high volume of applications, only shortlisted CVs will be contacted. 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 18 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.

📍 Aix-en-Provence / Toulon (ou alentours) 🏠 Télétravail : 2 jours par semaine selon contexte projet 📅 Démarrage : ASAP 🔐 Profil habilité ou habilitable (obligatoire) • 4 à 5 ans d’expérience minimum en environnement SOC • Expertise en analyse, qualification et investigation d’incidents de sécurité (N2/N3) • Capacité à traiter des incidents complexes et à escalader efficacement • Expérience en threat hunting et amélioration continue des cas d’usage • Création, tuning et optimisation de règles de détection (SIEM / EDR) • Bonne maîtrise d’un ou plusieurs outils type Splunk, QRadar, Sentinel, Cortex, CrowdStrike • Connaissance des frameworks (MITRE ATT&CK, NIST, ISO 27001…) • Expérience sur environnements Cloud / hybrides appréciée • Certification type GCIA, GCIH, CISSP ou équivalent est un plus

Role Description This is a full-time hybrid role for an Information Security Manager with 2nd and 3rd Line IT support experience. The role involves day-to-day tasks associated with planning, implementing, and maintaining an Information Security Management System (ISMS), including managing cybersecurity risks, implementing network security measures, and ensuring compliance with industry standards. The Information Security Manager will also provide IT support to the company and will be based in the London office, with flexibility for some remote work. Your past experience must include 2nd and 3rd line infrastructure support where you are able to advise and direct the technical team. Qualifications Experience in Information Security Management and creating and implementing an ISMS Experience in Cybersecurity and Network Security Expertise in Information security best practices and standards Excellent problem-solving skills and attention to detail Strong communication and collaboration skills Bachelor's or Master's degree in Computer Science, Information Technology, or related field Certifications such as CISSP, CISM, CCNA, or equivalent are a plus Experience in IT support or Systems Administration is desirable The position is 3 days in the office per week in Central London. Salary will be negotiable - but like to be in the range £65K - £80K. Do send your CV to us in Word format along with your salary and notice period.

Dans le cadre du développement de l'Intelligence Artificielle au sein du SOC d'un grand groupe bancaire, nous recherchons un(e) Expert(e) en IA spécialisé(e) dans l'entraînement, l'alignement et l'évaluation de Modèles de Langage (LLM/SLM), afin de concevoir des modèles souverains ultra-spécialisés en cybersécurité. En collaboration directe avec l'équipe R&D Cyber et l'équipe SOC, vos missions seront les suivantes : Fine-tuning de modèles : adapter et spécialiser des LLM open-source (Llama, Mistral, Qwen...) sur des données de cybersécurité (logs, rapports CTI, playbooks) Alignement et limitation des hallucinations : mettre en œuvre des techniques d'apprentissage par renforcement pour garantir des réponses précises, sécurisées et sans biais Formatage et structuration des données : définir et appliquer les meilleurs formats de prompt et de conversation pour l'entraînement Évaluation et benchmarking : mettre en place des pipelines d'évaluation rigoureux pour mesurer la performance des modèles spécialisés "Cyber" par rapport aux standards du marché

At CGI, we deliver mission-critical technology solutions that help protect the UK’s national interests and support some of the country’s most important programmes. As a Site Reliability Engineer, you will play a key role in ensuring the reliability, scalability and performance of critical services, helping teams deliver resilient platforms that operate at scale. Working within a collaborative and innovative environment, you will have the opportunity to influence platform strategy, automate complex processes, and drive continuous improvement while being supported in developing your skills and career. Your work will directly contribute to operational excellence and the successful delivery of high-impact outcomes for our clients. 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 role will be based on a secure site.

Essential: 1. Hold current DV clearance. 2. Experience in forensics, malware analysis, threat intelligence. 3. Experience using Python, Perl, PowerShell, BASH or an equivalent language. 4. Experience with network forensics and associated toolsets and analysis techniques. 5. ISO 27001:2022 security and risk controls. 6. MITRE ATT&CK adversarial framework. 7. ITILv3/v4 Foundation. Desirable: 1. CompTIA A+. 2. CompTIA Security+. 3. CompTIA CySA+. 4. CompTIA PenTest+. 5. MCSE. 6. SANS 504 - Incident Handling. 7. SANS 511 (Continuous Monitoring). 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 18 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.

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 one of the ‘World’s Best Employers’ by Forbes magazine. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a member 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. As a DevOps Engineer within the Space, Defence and Intelligence business unit, you will apply your technical expertise to the design, implementation, testing and ongoing support of CGI's tool chain. With strong skills in Terraform and Azure, you will be responsible for the automation of the software development lifecycle.

At CGI, we empower our architects to shape the future of secure digital transformation. As a Technical Architect, you’ll design and deliver a next-generation on-premise identity solution that underpins the resilience and security of our clients’ most critical systems. You’ll help define and implement a scalable, future-ready access management platform that ensures seamless connectivity and trust across complex environments. This is your opportunity to take ownership of a greenfield solution that drives real-world impact, harnessing creativity and technical excellence to help CGI’s clients stay ahead in an evolving digital landscape. 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.

Notre client recherche un Administrateur de la Sécurité des Systèmes d'Information (SSI). Vous aurez pour mission principale d'assurer l'administration, l'exploitation et l'évolution de la plateforme de sécurité SIEM (Splunk Enterprise Security). Dans ce cadre, vous garantirez le maintien en condition opérationnelle ainsi que le maintien en condition de sécurité de la solution. Vos missions vous amèneront également à rédiger des livrables de suivi, tels que des comptes rendus d'intervention et la gestion des tickets.

Nous recherchons un(e) Analyste CERT – Threat Hunting IA pour rejoindre une équipe cybersécurité en charge de l'anticipation des menaces et de la sécurisation des usages de l'Intelligence Artificielle au sein d'un environnement critique. Vous interviendrez sur des missions de Threat Hunting dédiées aux technologies IA afin d'identifier les usages, détecter les risques et renforcer le niveau de sécurité des modèles déployés. À ce titre, vous serez notamment amené(e) à : Concevoir un processus d'inventaire automatisé des usages IA et détecter les cas de Shadow IA. Évaluer les risques liés aux modèles IA (LLM, IA générative, modèles de classification...) et vérifier l'efficacité des mécanismes de protection (guardrails). Définir des stratégies de détection et de supervision des usages IA en collaboration avec les équipes SOC. Réaliser des tests de sécurité sur les modèles IA (Prompt Injection, Jailbreak, fuites de données, hallucinations, biais) à l'aide d'outils spécialisés. Analyser les environnements Cloud afin d'identifier les expositions liées aux usages IA et proposer des recommandations de remédiation. Développer des scripts et automatisations en Python pour renforcer les capacités de détection et d'analyse.

Acteur majeur dans le domaine IT, depuis notre création en 1993, nous n'avons cessé de croître et d'évoluer. Avec une équipe dévouée de près de 1.400 collaborateurs répartis sur plusieurs sites en Belgique, au Luxembourg, en France et au Canada, NSI a suivi une trajectoire exceptionnelle. Notre entreprise est à la pointe de la révolution numérique, offrant une gamme complète de services IT, de l'analyse au développement de logiciels, en passant par l'architecture et la gouvernance IT. Votre rôle au sein de NSI Nous recherchons un(e) Ingénieur(e) IVVQ – Validation IAD & Services Internet H/F afin d'intervenir au sein d'un grand acteur du secteur des télécoms, dans un contexte d'innovation continue autour des produits et services de l'Internet fixe de demain. Descriptif des missions Au sein du département d'Intégration et de Validation des Services, vous êtes garant(e) de la qualité des IAD (Internet Access Device, « box Internet ») en accompagnement des évolutions techniques en matière de connectivité WAN (technologies fibre optique GPON et XGSPON), de Wi-Fi (normes 802.11be et suivantes) et de services associés (accès à distance, sécurité, économie d'énergie…). Missions Établir l'ensemble des exigences de services auprès des maîtrises d'œuvre Relire, maîtriser et challenger les spécifications techniques fournies Rédiger, présenter et tenir à jour des stratégies de tests cohérentes avec vos analyses de risques, les contraintes des différents projets et les retours d'expérience sur les autres produits et releases en production Rédiger et mettre à jour les spécifications des scénarios et des tests afin d'en favoriser l'efficience (détection de bugs) et la portabilité (exécution manuelle ou automatique) Écrire et exécuter des tests fonctionnels, de performance, d'endurance et de robustesse pour valider les nouvelles fonctionnalités Mettre à jour et exécuter des tests de non-régression pour préserver et améliorer la qualité perçue (QoE) par les parties prenantes (clients finaux, Service Clients, Expérience Clients, Opérations Réseau…) Optimiser l'ordonnancement de l'exécution des tests pour permettre la détection et la correction rapides des anomalies Qualifier les conditions de reproduction des anomalies et les caractériser par la prise et l'analyse de traces réseau et de logs produits ; formuler des hypothèses sur la root cause, tester les corrections proposées par la R&D et présenter l'avancement des investigations Apporter l'expertise technique et métier nécessaire à l'investigation des anomalies à dimension connectivité WAN et/ou Wi-Fi, et faciliter la priorisation via une description fine de l'impact sur la qualité perçue Assurer la veille technique sur les dernières technologies de l'Internet fixe et du Wi-Fi, ainsi que sur les produits et offres concurrents Participer activement à la démarche d'automatisation et d'introduction de l'IA générative dans les tests et leur exploitation

Dans le cadre d’un besoin client, nous avons l'opportunité d'accueillir un nouveau membre au sein de notre Tribu Cyber. Contexte de la mission : Notre client recherche un(e) Expert(e) Sécurité Applicative & Cloud Security pour apporter une expertise pointue en sécurité applicative et architecture sécurité afin de garantir un haut niveau de protection du parc applicatif. La mission s'inscrit à la fois en phase projet (intégration de bout en bout de la sécurité) et en phase d'exploitation, ainsi que sur des chantiers transverses liés aux évolutions globales du SI. Descriptif de la mission : Les missions sont : Définition des objectifs de niveau de services et autres indicateurs de santé et qualité de l'environnement de production Intégration et configuration de l'outillage de Monitoring, Logging et alerting Définition et implémentation des dashboards de pilotage de production et stratégie d'alerting Réponse sur incidents et opérations de production en mode DevOps en interaction avec les développeurs et spécialistes infrastructure au besoin Suivi du cycle de vie des incidents jusqu’au rétablissement du service et lancement de la procédure d’escalade si nécessaire Communication vers les clients et la hiérarchie Analyse des changements devant avoir lieu en production et livraison des recommandations Analyse et évaluation des incidents d'exploitation de façon à optimiser les actions correctives et préventives Classification et définition de la priorité des opportunités d'amélioration de la résilience du système Identification des besoins, définition des mesures de sécurité et préconisation des solutions (catalogue ou sur mesure) Analyse des risques relatifs aux applications (création ou évolution applicative via des solutions internes, externes, Cloud public, etc.) Contrôle du respect des exigences sécurité avant la mise en production Support et analyses des différents tests de sécurité (Pentest, SAST, DAST...)

We are seeking an experienced and motivated Site Reliability Engineer (SRE) to join a high-performing team supporting multiple data product and platform groups. This role is focused on improving the reliability, scalability, observability, deployment, and operational support of critical data-driven platforms and services operating within complex production environments. The successful candidate will work closely with engineering, platform, and operational support teams to strengthen monitoring and alerting capabilities, improve logging and traceability, troubleshoot incidents, support deployments, and automate operational processes wherever possible. The environment includes Kubernetes, Helm, the ELK stack, and a broad range of modern Site Reliability Engineering and cloud platform practices. This is a hands-on technical role suited to someone who thrives in fast-paced operational environments, enjoys solving complex production issues, and is passionate about automation, platform reliability, and continuous improvement. The role requires strong collaboration with both client stakeholders and engineering teams to ensure operational excellence, platform resilience, and service availability across critical systems.

Rattaché à la Direction de la Sécurité Opérationnelle, vous intégrez une équipe composée d'administrateurs SSI et du CSIRT. Vous serez en charge de l'administration, l'exploitation et l'évolution de la plateforme Splunk Enterprise Security (Splunk ES). Vos principales responsabilités incluent le maintien en condition opérationnelle et de sécurité de la solution, ainsi qu'une étroite collaboration avec les équipes CSIRT pour soutenir les activités de détection et de réponse à incident. Vous assurerez la production de comptes rendus d'intervention et la gestion du ticketing. Des astreintes sont possibles sur ce poste.