Security Operations Engineer - B2B

Added 12/05/2026

Role: Security Operations EngineerDuration: 6-month rolling contractWorking Pattern: Hybrid - multiple UK locationsGCS Cyber are partnered with a global organisation enhancing their Cyber Security Operations capability as part of a wider security transformation. They are now seeking a Security Operations Engineer with deep hands‑on experience across SecOps tooling, detection engineering and incident response enablement.Key ResponsibilitiesEngineer and optimise SIEM, EDR/XDR, SOAR, PAM and vulnerability platforms.Develop and tune detections (KQL/Sigma) to improve visibility and reduce false positives.Support SOC teams with investigations, tooling improvements and root cause analysis.Build automation workflows and SOAR playbooks to streamline response.Improve logging, telemetry and threat‑hunting capabilities.Ensure platform health,...

Security Architect (AppSec and Network Security) - B2B

Added 06/04/2026

Role: Security Architect (AppSec and Network Security) - B2BDuration: 6-month rolling contractWorking Pattern: Krakow, Hybrid (handful of days per month)GCS Cyber are partnered with a global financial services organisation undergoing multiple large-scale transformation programmes across their Cyber Security division. They are now looking for a Security Architect who has extensive experience managing end-to-end solution designs within large-scale transformation programmes with a heavy focus on Network Security and Application Security Proven experience producing high-level solution designs in line with business requirements.Proven ability to conduct security assessments and threat modelling to inform design decisions.Strong background in cybersecurity, with deep expertise in network...

Cloud Security Engineer - Contract

Added 03/06/2026

Cloud Security EngineerWe are looking for a Cloud Security Engineer to support the security of our clients cloud platforms and modern infrastructure environments. This role will work closely with technology and engineering teams to help identify, assess, and mitigate security risks while promoting security best practices across cloud-native and containerised environments.The successful candidate will bring a strong foundation in information security, a collaborative mindset, and a passion for continuous learning in cloud and infrastructure security. Key ResponsibilitiesSupport the implementation and maintenance of security controls across cloud environments.Collaborate with engineering and operational teams to enhance the security of cloud-based services and...

Application Security Engineer

Added 12/05/2026

Application Security Engineer ZZP / Freelance Industry: AAA Gaming Studio Location: Fully Remote (Netherlands) Contract Length: 12-18 monthsAbout the RoleA fast‑growing gaming studio is looking for an Application Security Engineer to embed secure development practices into their high‑velocity game and platform engineering teams. You'll help secure game engines, back‑end services, and player‑facing APIs used by millions worldwide.Key ResponsibilitiesConduct secure code reviews and help dev teams fix vulnerabilities.Integrate SAST, SCA, and DAST tools into build pipelines.Perform threat modelling on gameplay features and backend microservices.Respond to application‑level vulnerabilities and guide remediation efforts.Promote a developer‑friendly security culture within the studio.Skills & ExperienceStrong experience...

Network Security Engineer

Added 12/05/2026

Network Security EngineerContractLocation: Remote / Hybrid (Amsterdam)Contract Length: 6-12 months Start Date: ASAP Rate: CompetitiveAbout the RoleOur client, a leading gaming company, is seeking an experienced Network Security Engineer Contractor to support a large-scale merger and acquisition integration. The organisation has recently acquired a studio with a significantly different technology estate, and now requires a specialist to help consolidate, secure, and stabilise the combined network infrastructure.This role is critical in ensuring the security, interoperability, and reliability of both legacy and acquired networks during the integration phase.Key ResponsibilitiesNetwork Security Integration & HardeningAssess, analyse, and map the acquired company's network and security...

Network Security Engineer

Added 12/05/2026

Network Security Engineer gezocht - Utrecht12 maanden contract (Detachering)€65.000 - €70.000Hybride - 2 dagen p/w op kantoor28 vakantiedagen7 officiële feestdagen (Bevrijdingsdag jaarlijks van toepassing)8% vakantiegeld8,33% eindejaarsuitkeringPensioencompensatieWat je gaat doen:Uitvoeren van changes op firewalls, routers, switches en infrastructuurapparatuurAfhandelen van incidenten en uitvoeren van diepgaande onderzoekenToezicht houden op installaties (remote of onsite)Opstellen van HLD's/LLD's + scherp implementatieadvies leverenOntwerpen, configureren & implementeren van routing/switching, firewalls, load balancers, proxies, telefonieBeheren van CMDB-updates, IPAM, netwerkdiagrammen en instructiesOntwikkelen van scripts + het aanjagen van netwerkautomatiseringBeheren van monitoringsystemen, compliance, capaciteit & changesWat jij meebrengt:10+ jaar ervaring met Check Point & Cisco5+ jaar ervaring als Security Specialist binnen...

Lead OT Security Engineer

Added 12/05/2026

Role OverviewThis position provides leadership within the Cyber Solutions Consulting function, supporting senior management in achieving team and organisational objectives. The role combines technical oversight, delivery excellence, and cross‑functional collaboration across presales and project engagements. It also includes guiding internal technology architecture initiatives. Key ResponsibilitiesManage and supervise the Cyber Solutions Consulting team.Design solutions and capabilities for cyber transformation programmes, assessments, remediation activities, roadmap development, systems integration, and solution deployments.Contribute to the organisation's project delivery framework and provide technical oversight across internal and client-facing projects.Support the ongoing development of Cyber Solutions Delivery policies, procedures, and standards.Help define and implement standard operating...

OT Cyber Security Engineer

Added 13/04/2026

Cyber Security OT Engineer📍 Suffolk (1-2 days per week on-site)Overview We're looking for an experienced Cyber Security OT Engineer to support and secure critical operational technology environments. You'll work across infrastructure, networks, and security tooling to ensure resilience, compliance, and protection against cyber threats in a regulated environment.Key ResponsibilitiesSupport and maintain OT security infrastructure (firewalls, SIEM, PAM, IDS, endpoint security)Monitor, troubleshoot, and resolve security incidents and problemsImplement changes in line with strict change control processesSupport OT security projects and continuous improvement initiativesAssist with cyber incident response and recovery activitiesWork with internal teams, vendors, and stakeholders to enhance security postureContribute to...

Network Security Engineer

Added 07/04/2026

Network Security EngineerContract Location: Remote / Hybrid (Amsterdam)Contract Length: 6-12 months Start Date: ASAP Rate: CompetitiveAbout the RoleOur client, a leading gaming company, is seeking an experienced Network Security Engineer Contractor to support a large-scale merger and acquisition integration. The organisation has recently acquired a studio with a significantly different technology estate, and now requires a specialist to help consolidate, secure, and stabilise the combined network infrastructure.This role is critical in ensuring the security, interoperability, and reliability of both legacy and acquired networks during the integration phase.Key ResponsibilitiesNetwork Security Integration & HardeningAssess, analyse, and map the acquired company's network and...

OT Cyber Security Engineer (Outside IR35)

Added 07/04/2026

OT Cyber Security Engineer - Contract (Outside IR35)Location: UK (Remote with occasional travel) Duration: 12 Months Rate: Competitive (Outside IR35)The OpportunityWe're supporting a major programme within the OT / Industrial Cyber Security space, delivering security improvements across critical environments.This is a project focused contract, ideal for an experienced OT Cyber Security Engineer who has worked within live industrial environments and understands the challenges of securing legacy and operational systems.Key ResponsibilitiesDeliver OT security improvements across industrial environmentsSupport security assessments, risk identification, and remediation activitiesWork closely with engineering and operational teams to implement controlsContribute to network segmentation, asset visibility, and monitoring initiativesSupport...

Application Security Engineer

Added 06/04/2026

Application Security Engineer ZZP / Freelance Industry: AAA Gaming Studio Location: Fully Remote (Netherlands) Contract Length: 12-18 monthsAbout the RoleA fast‑growing gaming studio is looking for an Application Security Engineer to embed secure development practices into their high‑velocity game and platform engineering teams. You'll help secure game engines, back‑end services, and player‑facing APIs used by millions worldwide.Key ResponsibilitiesConduct secure code reviews and help dev teams fix vulnerabilities.Integrate SAST, SCA, and DAST tools into build pipelines.Perform threat modelling on gameplay features and backend microservices.Respond to application‑level vulnerabilities and guide remediation efforts.Promote a developer‑friendly security culture within the studio.Skills & ExperienceStrong experience...

Lead OT Security Engineer

Added 06/04/2026

Role OverviewThis position provides leadership within the Cyber Solutions Consulting function, supporting senior management in achieving team and organisational objectives. The role combines technical oversight, delivery excellence, and cross‑functional collaboration across presales and project engagements. It also includes guiding internal technology architecture initiatives. Key ResponsibilitiesManage and supervise the Cyber Solutions Consulting team.Design solutions and capabilities for cyber transformation programmes, assessments, remediation activities, roadmap development, systems integration, and solution deployments.Contribute to the organisation's project delivery framework and provide technical oversight across internal and client-facing projects.Support the ongoing development of Cyber Solutions Delivery policies, procedures, and standards.Help define and implement standard operating...

AI Security Engineer - Contract

Added 05/03/2026

Data & AI Security EngineerRole OverviewThe Data & AI Security Engineer is responsible for protecting sensitive data and ensuring AI technologies are used securely. This is a hands-on technical role focused on defining security standards, implementing controls, and improving the organisation's overall data and AI security posture. The role will manage security tooling, identify risks, and work with teams across IT, Data, AI Governance, Privacy and Legal to ensure compliance with regulations like GDPR and the EU AI Act.Key ResponsibilitiesData & AI SecurityDefine and maintain data and AI security policies, standards, and secure design patterns.Implement and manage data protection controls...

Cloud Security Engineer - Contract

Added 05/03/2026

Cloud Security EngineerRole OverviewThe Cloud Security Engineer is responsible for designing, implementing, and improving security practices across cloud environments including IaaS, PaaS, and SaaS. This role focuses on establishing secure architecture patterns, defining security standards, and ensuring cloud platforms are configured and operated securely. You would contribute to broader cybersecurity engineering initiatives and helps strengthen protection of applications, infrastructure, and organisational data.Key ResponsibilitiesDevelop and maintain cloud security policies, standards, and architecture guidelines.Design secure cloud architecture patterns including identity and access management, network segmentation, encryption, key management, secrets management, and secure connectivity.Implement and oversee cloud security posture management practices to identify,...

Network Security Engineer

Added 24/02/2026

Network Security Engineer gezocht - Utrecht12 maanden contract (Detachering)€65.000 - €70.000Hybride - 2 dagen p/w op kantoor28 vakantiedagen7 officiële feestdagen (Bevrijdingsdag jaarlijks van toepassing)8% vakantiegeld8,33% eindejaarsuitkeringPensioencompensatieWat je gaat doen:Uitvoeren van changes op firewalls, routers, switches en infrastructuurapparatuurAfhandelen van incidenten en uitvoeren van diepgaande onderzoekenToezicht houden op installaties (remote of onsite)Opstellen van HLD's/LLD's + scherp implementatieadvies leverenOntwerpen, configureren & implementeren van routing/switching, firewalls, load balancers, proxies, telefonieBeheren van CMDB-updates, IPAM, netwerkdiagrammen en instructiesOntwikkelen van scripts + het aanjagen van netwerkautomatiseringBeheren van monitoringsystemen, compliance, capaciteit & changesWat jij meebrengt:10+ jaar ervaring met Check Point & Cisco5+ jaar ervaring als Security Specialist binnen...