Trouvez votre prochaine offre d’emploi ou de mission freelance Sécurité informatique

Le CMDB Steward agit comme expert métier (SME – Subject Matter Expert) et facilitateur de la gouvernance de la qualité des données de la CMDB sur les domaines qui lui sont attribués. Le rôle se concentre sur : Le suivi de la qualité des données ; L'identification des anomalies et incohérences ; L'accompagnement et la formation des CI Managers et Data Owners ; La facilitation des actions de remédiation ; Le soutien à l'amélioration continue de la santé de la CMDB ; La collaboration étroite avec les équipes ServiceNow et les autres parties prenantes afin de garantir des solutions cohérentes, évolutives et conformes aux exigences de la banque. Description des activités 1. Activités techniques et stratégiques1.1. Assistance au Service MappingRéaliser les activités liées au Service Mapping (cartographie des applications) dans ServiceNow : Créer les instances de service correspondantes ; Valider le périmètre et la cartographie des services ; Créer les liens/relationnels nécessaires et corriger les écarts avec les parties prenantes concernées ; Assister à l'intégration de nouvelles applications métier. 1.2. Suivi de la qualité des données et identification des anomaliesSurveiller et identifier les problèmes de qualité des données et les anomalies de la CMDB, notamment : Éléments de configuration (CI) ou attributs manquants ; États de cycle de vie invalides ; Relations cassées ou incorrectes ; CI orphelins ; Incohérences liées aux responsables ou propriétaires. Identifier les problèmes de qualité des données et les escalader vers les responsables appropriés : CI Managers ; Support CMDB ; Support ITOM ; Responsables technologiques. Animer les sessions de revue de santé de la CMDB conformément aux processus : CMDB Health ; CMDB Verification Audit. 1.3. Conseil et supportApporter son expertise et son accompagnement sur : La gouvernance de la CMDB ; Les standards du cycle de vie des CI ; La modélisation des relations et dépendances. Accompagner les CI Managers sur les bonnes pratiques de modélisation. Assurer le suivi de la file de tickets CMDB et fournir assistance et support sur le périmètre attribué.

Mission principale Assurer l'expertise, la configuration avancée et l'optimisation de la solution EDR basée sur CrowdStrike Falcon, tout en contribuant à la détection, l'analyse et la réponse aux incidents de sécurité sur les environnements postes de travail et serveurs. Responsabilités Administrer et faire évoluer la plateforme CrowdStrike Falcon Définir et optimiser les politiques de détection et prévention (IOA/IOC) Réaliser du threat hunting avancé sur les endpoints Analyser les incidents de sécurité complexes (malware, ransomware, intrusion) Gérer les réponses à incident (containment, isolation, remédiation) Intégrer l'EDR avec les outils SOC (SIEM type Sentinel, Splunk, etc.) Réduire le bruit des alertes (tuning des règles) Participer à l'amélioration continue de la détection (use cases SOC) Produire des rapports d'analyse technique pour les équipes sécurité Compétences techniques CrowdStrike Falcon (expertise avancée obligatoire) Analyse malware / forensic endpoint Windows / Linux internals Réponse à incident cybersécurité SIEM (Microsoft Sentinel, Splunk, QRadar…) Scripting (Python, PowerShell apprécié) Connaissance MITRE ATT&CK framework Profil recherché 5 à 10 ans d'expérience en cybersécurité Expérience SOC niveau 2/3 ou ingénierie sécurité Expérience forte en environnement entreprise (grand parc endpoints) Certifications appréciées : CCFA, CEH, GCIA, ou équivalent Soft skills Esprit analytique très poussé Autonomie sur investigation complexe Capacité à vulgariser des attaques techniques Rigueur opérationnelle (gestion d'incidents critiques) Environnement SOC / Cyber Defense Center Infrastructure hybride (on-prem + cloud)

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 RequirementsMinimum 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 HaveFirewall 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 DetailsParticipation in an on-call rotation may be required. Experience in large-scale, highly regulated, or mission-critical environments is considered an advantage.

CONTEXTE : Au sein de l'équipe IT d'un grand compte corporate en charge des applications globales de Trésorerie et Crédit, vous assurez le support opérationnel quotidien des applications critiques utilisées par les équipes Finance et Trésorerie à l'international. Le poste est orienté Run / Production / Support Applicatif. MISSIONS PRINCIPALES : SUPPORT APPLICATIF : Gestion des incidents et demandes utilisateurs Analyse et résolution des dysfonctionnements Escalade vers les experts applicatifs, éditeurs ou équipes infrastructures lorsque nécessaire Communication auprès des utilisateurs sur le suivi des tickets EXPLOITATION ET SUPERVISION : Contrôle quotidien de la disponibilité des applications Surveillance des flux, interfaces, batchs et échanges de données Gestion des alertes et exécution de procédures de reprise Support des périodes sensibles (paiements, clôtures, reporting) GESTION DES ACCES : Création, modification et suppression des comptes utilisateurs Gestion des habilitations Participation aux revues périodiques des accès Support fonctionnel de premier niveau SECURITE ET CONFORMITE : Renouvellement des certificats de sécurité Gestion des certificats d'authentification Suivi des clés API et comptes techniques Coordination des évolutions de règles firewall Validation post-changement. AUDIT & CONTROLE : Préparation des preuves d'audit Collecte des éléments de contrôle interne Participation aux audits internes et externes Suivi de la documentation réglementaire TESTS ET DOCUMENTATION : Exécution des scénarios de tests Validation des mises en production Mise à jour des procédures d'exploitation Rédaction d'articles de connaissance et documentation technique

Contexte de la mission : Dans le cadre du déploiement d'une solution FSM (Field Service Management) sur un système d'information existant, nous recherchons un Responsable Technique / Ingénieur DevOps Senior pour piloter le build et le run de la solution, de bout en bout, sur l'ensemble des environnements (développement, qualification, UAT, préproduction, production). Vous interviendrez comme référent technique sur un projet stratégique, avec une réelle autonomie sur la mise en œuvre de la chaîne CI/CD, la supervision applicative et la coordination avec les équipes d'exploitation. Vos missions : - Piloter techniquement le déploiement de la solution FSM sur l'ensemble des environnements (dev, qualif, UAT, préprod, prod) - Concevoir, maintenir et faire évoluer la chaîne d'intégration et de déploiement continu (CI/CD) - Mettre en place et exploiter la supervision applicative et infrastructure (Prometheus, Grafana, ELK) - Assurer la coordination avec les équipes d'exploitation pour garantir la stabilité du run - Garantir la sécurité, la qualité et la performance des livraisons - Rédiger et maintenir la documentation technique (en français) - Participer à la définition et à l'exécution des plans de test

Dans le cadre du renforcement de ses équipes IT, notre client, grand acteur du secteur bancaire, recherche un Ingénieur DevSecOps expérimenté pour intégrer son programme de transformation DevSecOps au sein du département IT supportant les activités de marchés et de risques. Le programme a pour mandat de transformer et moderniser les usines logicielles en intégrant la sécurité dès la conception (Shift Left), de promouvoir l'adoption des meilleures pratiques DevOps et de livraison continue (CI/CD) à l'échelle du département, de standardiser et automatiser la chaîne de livraison pour accélérer le Time-to-Market, et de définir des mécanismes de gouvernance transverse pour mesurer et améliorer l'efficacité des pipelines applicatifs. Vos principales responsabilités : Mettre en œuvre la gouvernance transverse autour des bonnes pratiques DevOps et CI/CD Accompagner et assister techniquement les équipes de développement dans l'adoption des outils DevOps et DevSecOps Sécuriser les pipelines via l'intégration systématique et automatisée des outils de scan de sécurité et de qualité de code Promouvoir une culture DevSecOps forte à travers une communication et une animation transverse active Vous interviendrez en forte interaction avec les équipes de développement, de sécurité, de production, d'architecture et les équipes applicatives.

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, we deliver secure, resilient infrastructure solutions that underpin critical national programmes. As an Infrastructure Engineer, you will take ownership of complex network, storage, and server environments that enable high-impact outcomes for our defence clients. We design and manage robust, secure architectures that drive operational excellence and long-term resilience. Joining CGI means shaping secure digital foundations, applying innovative thinking to complex challenges, and collaborating with trusted experts in a culture that values accountability, growth, and continuous improvement. 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 must hold Higher Level Clearance and be willing to undergo further clearance. This is a hybrid position based in Leatherhead, with 3–4 days per week onsite.

At CGI, we deliver the secure, mission-critical systems that power the UK's most vital sectors, helping to safeguard national interests while driving innovation and transformation. As an Infrastructure Engineer, you will play a central role in designing, deploying, and supporting complex platforms that combine on-premises and cloud environments. This is an opportunity to apply your expertise in Kubernetes, automation, and cloud-native technologies to deliver solutions that are critical to the nation, while working in a culture that values creativity, ownership, and collaboration. 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 is available in Gloucester and London.

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 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. CGI's Space, Defence and Intelligence business unit, focuses primarily on the delivery of contemporary and innovative technical solutions for the government agencies most challenging problems. We work, build, and operate bespoke, technically complex, mission-critical systems which help our clients keep us all safe and secure. We are currently looking for an experienced Automation Framework Engineer to join our cross-functional team to guide, assure and deliver integrated solutions. This will be in partnership with our clients. This role offers fantastic opportunities to work within an interesting, innovative and highly rewarding environment. We are heavily committed to developing our members and provide excellent learning and development opportunities to ensure that your knowledge and skills keep pace with the evolving technology landscape. We engender a culture of innovation, collaboration and ownership; highly motivated self-starters thrive within our organisation. Although we would prefer candidates to have all the skills we need, we would consider high quality individuals who meet most of the criteria. Our roles are only available if you hold a UK Security Clearance and are a sole UK National due to the secure nature of the project. You will either hold a higher level clearance or be willing to obtain it. Any individual without security clearance is welcome to apply and will always be considered for this or wider opportunities in CGI, where appropriate. The position is suitable for some office or home-based work but due to the secure access of systems, this position will require onsite attendance in Gloucester.

At CGI, we partner with Defence clients to deliver critical data exploitation capabilities that strengthen national security and enable smarter, faster decision-making. As an Infrastructure Engineer, you will play a pivotal role in shaping and supporting secure, resilient platforms while guiding the migration of legacy services to MOD core cloud infrastructure. Working alongside senior client stakeholders, you will provide trusted technical insight, mitigate risk, and drive value across complex programmes. We empower you to take ownership of high-impact challenges, bring fresh thinking to complex problems, and collaborate within a supportive, expert-led environment where your contribution directly influences mission success. 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.

Elevate your potential with CGI, a global technology service provider and premier business consultancy recognized by Forbes Magazine as a top 100 employer. Our mission is rooted in evolution, excelling in intricate challenges. Collaborating directly with our clients, we employ innovative technologies to revolutionize, empower, safeguard, and deliver critical mission systems. 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 2023 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. We are looking for a Software Developers to come and join our Secure Innovation & Advisory area which sits within the Space, Defence and Intelligence business unit here at CGI. The successful Senior Engineer can either be based out of either Gloucester or Manchester offices.

Security Operations Centre (SOC) Analyst - Tier 2 Location: Stoke-on-Trent, United Kingdom Employment Type: Permanent, Full-Time Department: Security Operations Salary: Up to £55,000 per annum + shift allowance Working Hours: Rotating shifts (early, late, and nights) on a 4-days-on rota. About the Role We are seeking a proactive Tier 2 SOC Analyst to join a 24x7 Security Operations Centre. You will investigate and manage complex security incidents, support threat hunting activities, and act as an escalation point for Tier 1 analysts. This role offers an excellent opportunity to further develop your technical expertise while helping to strengthen and mature the organisation's security operations capability. Key Responsibilities Lead the triage, investigation, and resolution of medium to high-severity security incidents. Monitor and analyse security events using SIEM, EDR, and other security tools. Act as an escalation point and mentor for Tier 1 analysts. Perform threat analysis and share intelligence across teams. Tune and improve SIEM rules and detection capabilities. Support vulnerability management and remediation activities. Produce incident reports, metrics, and post-incident reviews. Collaborate with Infrastructure, Network, and Development teams to improve security posture. Skills & Experience 1-5 years' experience within a SOC or similar security operations environment. Hands-on experience with incident response, security monitoring, and threat analysis. Experience using SIEM, EDR, and vulnerability management tools. Good understanding of security operations processes, attack techniques, and incident management methodologies. Strong analytical and problem-solving skills. Qualifications (Desirable) Degree in Cyber Security, Information Security, Computer Science, or equivalent experience. Relevant certifications such as CompTIA Security+, CEH, CCSP, CISSP, BTL1, BTL2, or SIEM/vendor-specific certifications. 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.

Qui sommes-nous ? EZIA, cabinet de conseil du groupe Neurones, est spécialisé dans les réseaux informatiques, la sécurité des systèmes d'information et la cybersécurité. Nos consultants aident nos clients à concevoir, faire évoluer et sécuriser leurs infrastructures IT, qu'elles soient sur site ou dans le cloud. Notre approche repose sur des méthodes modernes et agiles, intégrant les dernières évolutions autour du cloud, de l'intelligence artificielle et des bonnes pratiques en matière de sécurité. Face à un environnement réglementaire de plus en plus exigeant, nous veillons à ce que la conformité aux standards soit pleinement intégrée à vos projets de transformation. Notre mission : Apporter un haut niveau d'expertise, un accompagnement sur mesure et des réponses concrètes aux enjeux de performance et de protection des systèmes d'information. 🤝 Ce que nous apportons : Une expertise pointue et reconnue Des équipes passionnées, curieuses et à l'écoute Des solutions adaptées aux enjeux réels du terrain Une culture de la confiance, du partage et de l'engagement Nos domaines d'expertise : Réseaux informatiques Sécurité périmétrique Automatisation (NetDevOps) Cybersécurité à 360° Conformité & risques Détection & réponse aux incidents Gestion des identités & accès Sécurité cloud Infrastructure Rejoignez l'aventure ! Vous êtes consultant·e, ingénieur·e, architecte, chef.fe de projet ou simplement passionné·e par les enjeux réseaux et sécurité ? N'hésitez pas à nous contacter. EZIA, c'est avant tout une équipe engagée, soudée et à l'écoute, qui mise sur l'intelligence collective pour construire des solutions solides, durables et humaines. Nous recherchons un Chef de Projet expérimenté pour superviser des projets d'infrastructures réseaux multi-clients, avec un accent particulier sur la sécurité des réseaux, l'accès à Internet, ainsi que la gestion des périmètres Active Directory (AD), des pare-feu, des proxies, et des WAF (Web Application Firewall). Responsabilités : Planifier, exécuter et finaliser les projets d'infrastructure réseau selon les délais impartis et le budget alloué. Collaborer avec les équipes techniques pour concevoir des solutions adaptées aux besoins des clients. Assurer la sécurité des réseaux déployés en intégrant les meilleures pratiques et technologies de cybersécurité. Gérer les relations avec les clients et les parties prenantes tout au long du projet. Suivre l'avancement des projets et produire des rapports réguliers sur l'état d'avancement. Identifier et gérer les risques liés aux projets.

At CGI, we build and operate mission-critical systems that help protect the UK, delivering secure, innovative solutions that make a tangible difference. As a Platform Engineer, you will play a key role in designing, automating and evolving cloud-native platforms that enable the rapid, reliable and secure delivery of services supporting national security programmes. Working alongside talented engineers in a collaborative environment, you will have the opportunity to influence platform strategy, drive continuous improvement and contribute to solutions that deliver real-world impact, while being supported in developing your skills and advancing your career. 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 is role will require you to work on a secure site.