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
• Mid-level

Manual penetration testing and security assessments of web applications, APIs and enterprise platforms, validating and exploiting vulnerabilities using OWASP-aligned methodologies. Produces detailed technical reports with risk ratings and remediation guidance, working with application owners and security stakeholders, and contributes to security research including AI-enabled applications.

Burp Suite · Kali Linux · Metasploit +2

• County Galway
• Hybrid · 2–3 days in office
• £45,000 – £55,000 pa
• Mid-level

Day-to-day work centres on analysing, triaging and prioritising vulnerabilities across enterprise infrastructure, applications and platforms, then coordinating remediation with infrastructure and engineering teams. The role involves reviewing threat intelligence and security advisories, producing dashboards and metrics on remediation progress, and improving vulnerability management tooling and processes within a large professional services security function.

Tenable · Qualys · Rapid7 +2

• 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

• Belfast
• On-site
• Junior

Hands-on role investigating escalated security alerts, triaging and responding to cyber incidents, and gathering forensic evidence following established playbooks. You'll work with a global follow-the-sun team across time zones, support security tooling and process improvement, and participate in an on-call rota with rotational evening and weekend shifts.

SIEM · IDS/IPS · EDR +7

• Belfast
• Senior

Senior architecture role shaping knowledge and productivity platforms across a global law firm, defining roadmaps and target-state architecture. Involves Microsoft 365, document and content management, enterprise search, integrations, identity and emerging AI capabilities such as Copilot, with architectural leadership over platform transformation and governance.

Microsoft 365 · SharePoint · Microsoft Copilot +3