Top Cyber Security Jobs in Belfast

Sell Elastics search, observability, and security SaaS to the NHS by owning full sales cycles, driving adoption, qualifying high-value opportunities (MEDDPICC), building executive relationships, and coordinating cross-functional teams to close complex deals and expand footprint.

Support and advance the application security program: review designs and architecture, advise engineering/DevOps on secure SDLC practices, run static/dynamic scans and manual assessments, triage external pentest and bug-bounty findings, and drive security process improvements.

Lead global SCA and SAST strategy and tooling, integrate static and open-source scanning into CI/CD pipelines, reduce false positives, perform threat modeling and architecture reviews, mentor teams, and drive developer-first application security across diverse tech stacks.

Lead and grow Elastic's Justice & Public Safety business across the UK. Build executive relationships across government and blue light organizations, drive strategic pursuits, expand Elastic's platform (Search, Security, Observability, AI), and collaborate with cross-functional teams. Mentor colleagues, develop partner ecosystems, and deliver sustainable pipeline, customer outcomes, and platform revenue growth while preparing to scale the business.

Enforce the Ship Security Plan and support the Ship Security Officer: conduct security assessments and inspections, manage access control and screening (X-ray, metal detectors), lead security team and drills, investigate incidents, maintain security equipment and filing, coordinate with port authorities, and respond as first responder/active assailant team leader.

Lead Telecoms Security Act compliance and Ofcom engagements, validate technical evidence, assess risks and controls, align frameworks (NCSC CAF, ISO27001), support governance, and oversee third-party security and contractual obligations across engineering, security, and operations.

Lead Arrow's Microsoft Security strategy and partner activation across the UK&I channel. Build Microsoft and partner relationships, run enablement, campaigns and events, manage marketing budget, track KPIs, and drive customer and workload acquisition through reseller partners.

Support threat intelligence, incident analysis/response, penetration test coordination, vulnerability scanning and remediation tracking, security tool administration, dashboard maintenance, and adherence to security policies while learning and developing cybersecurity skills.

Design, automate, and maintain security controls, detection, and remediation systems; evaluate security technologies; perform risk assessments and threat models; partner with engineering for secure development; lead incident response and support compliance (SOC 2, ISO 27001); manage bug bounty and vulnerability disclosure programs.

Deployable Emergency Response Team member providing humanitarian access, safety and security expertise during emergencies (65% deployment). Lead risk analysis, access and security strategies, stakeholder negotiations, incident reporting and communications setup. Deliver trainings, support incident management, advise program design and ensure handover and partner capacity-building.

Lead a global security engineering organisation (30–50 people) to embed secure-by-design across platform primitives (compute, storage, networking, identity). Drive systemic risk reduction, deliver high-leverage security platforms and frameworks, partner with CISO/CTO/product teams, manage engineering leaders and senior ICs, and foster an inclusive, engineering-first security culture.

Design and implement Microsoft-based security architectures (Azure, Entra, Defender, Sentinel). Consult with clients to gather requirements, produce solution proposals, ensure governance/compliance, lead technical delivery, and produce detailed documentation.

Lead and own the information security program and security engineering at NEAR Foundation. Drive SOC 2 Type 2 and ISO 27001 readiness, run logging/monitoring/incident response, manage vulnerability and third-party risk, harden identity/access/endpoint stacks, automate security and compliance across SaaS, and advise on tooling and cloud security (AWS/GCP).

Lead security engineering across web apps, APIs, cloud (AWS/OCI), Kubernetes, and on-prem systems. Build CI/CD security, secure genomic and PHI/PII pipelines (HIPAA), run monitoring and incident response, prepare for HIPAA/SOC2/ISO27001 audits, perform pentesting/vulnerability discovery, improve logging/SIEM, and drive remediation with engineering and DevOps while raising company-wide security awareness.

Conduct deep technical research to identify novel risks and attack vectors in cloud- and AI-native architectures, produce proofs-of-risk and technical POCs, and partner with Product and Engineering to translate findings into product capabilities.

Provide hands-on security assurance and technical guidance for an SAP transformation from ECC to cloud-native S/4HANA. Review architectures, identify security risks across identity, APIs, cloud services, data flows and third-party integrations, recommend controls aligned to enterprise standards, and support DevSecOps and secure engineering practices throughout design, build, deploy and operate phases.

Secure Aptos core infrastructure and products via design reviews, code audits, penetration tests; build security tools and mitigations; define secure operational practices; advise engineers; and triage bug bounty reports.

Design and implement secure cloud-based solutions and DevSecOps practices. Automate security tooling in CI pipelines, perform threat modelling and vulnerability management, support penetration testing, review security outputs, convert findings into actionable work, verify secure architectures, and coach junior team members.

Lead Security Engineer responsible for directing security engineering and testing across platforms and services, defining testing methodology and tools, performing penetration testing and secure code assessment, embedding security in CI/CD pipelines, threat modelling, and mentoring junior engineers while liaising with stakeholders and customers. Role requires defence experience and an active security clearance.

Perform protocol-focused security research to prevent vulnerabilities on Ethereum mainnet. Tasks include AI-assisted analysis, fuzzing, manual review, reviewing hardforks and spec changes, improving security tooling and automation, coordinating disclosures, and supporting audits and audit competitions while collaborating with devops, specifications authors, and client implementers.

Lead research and advisory on application security for enterprise applications (ERP/CRM). Produce thought leadership, client-facing insights, presentations, market analysis, and support sales. Mentor analysts, drive research agenda, improve processes, and advise CIOs on security strategy, vendor evaluation, metrics, and vulnerability testing across major vendors (SAP, Salesforce, Workday, Oracle).

Lead research and thought leadership on threat and exposure management. Produce high-value insights, analyze market trends, advise clients, support sales, present at events, mentor analysts, and improve research processes. Engage clients virtually and in person, delivering actionable recommendations and peer-reviewed content while collaborating across global teams.

Produce thought-leading research and advisory on security operations, threat detection, incident response and automation. Engage clients via written research, inquiries, presentations, and events; mentor practitioners; support sales and media; and maintain expertise across SIEM, SOC ecosystems, cloud/on-prem security, and automation trends.

Lead security engineering for Hummingbird's infrastructure: harden AWS (Terraform), manage vulnerability and dependency tooling, develop threat intelligence, own incident response and disaster recovery, and shape long-term security posture while collaborating across a small senior engineering team.

Design, implement and improve security tools and platforms across cloud, SaaS and enterprise environments. Evaluate and adopt new and AI-enabled security technologies, support observability and telemetry, lead technical incident investigations, ensure compliance with security architecture and governance, and influence stakeholders to embed security best practices.