Cyber Security Jobs in Belfast

• Belfast
• Hybrid · 3 days in office
• Senior
• Contract

Designs end-to-end infrastructure and cloud solutions for enterprise customers, leading technical workshops and translating business requirements into scalable architectures. Produces high and low-level design documentation and provides technical leadership across the project lifecycle, working with Azure, Microsoft 365, VMware/vSAN and hybrid cloud platforms. Also supports bids, solution presentations and customer engagement.

Microsoft Azure · Microsoft 365 · VMware +7

• London
• £75,000 – £110,000 pa

This role involves conducting manual penetration testing and security assessments of web applications, APIs, and enterprise platforms. You will identify and exploit vulnerabilities, produce detailed technical reports, and work closely with application owners and security stakeholders to improve the organization's cyber resilience.

• Belfast
• Hybrid
• £80,000 – £100,000 pa
• Lead
• Permanent

Independent assurance voice across a sovereign AI platform's cloud estate, corporate environment and AI capability. Sets security baselines for DevOps, IT and Product Security Engineering, then verifies them through continuous monitoring and independent testing, including AI controls such as prompt injection defences and agent permissions. One of the founding roles in a scaling assurance function, working with defence and government customers.

Wiz · ISO 42001 · EU AI Act +4

• London
• Hybrid · 2–3 days in office
• £50,000 – £75,000 pa
• Mid-level

Client-facing security role within a UK consultancy's growing Security Architecture practice, supporting government, defence and critical infrastructure programmes. Day to day involves threat modelling, risk assessment, reviewing solution and infrastructure designs, defining security requirements and controls, and running client workshops. Suits security engineers or consultants wanting to move into architecture, with occasional client site visits rather than frequent travel.

NIST · SABSA · TOGAF +5

• London
• £60,000 – £100,000 pa
• Mid-level
• Permanent

Advises clients on core security across cloud, identity, applications, data and governance while addressing AI-specific risks such as prompt injection, excessive agency and data leakage. Runs security assessments and architecture reviews, threat models agentic workflows and LLM applications, and helps establish guardrails and governance for AI systems from experimentation to production.

LLM · GenAI · NIST AI RMF +7