Top Cyber Security Jobs in Bristol

Lead hands-on product security architecture across GitLab, including design reviews, threat modeling, systemic risk remediation, security standards, prototypes, and reusable developer guardrails. Partner with engineering and product leaders, secure distributed systems and software supply chains, guide AI coding tool security, mentor security engineers, and influence technical direction through proactive architecture and clear communication.

Supervise Workplace and Facilities operations for the PSA London location. Lead and develop workplace staff, coordinate custodial services, manage vendors and contracts, oversee preventative maintenance, and administer site services such as mail, food and beverage, supplies, and employee support. Handle workplace requests, visitor coordination, facilities equipment vendors, and health and safety improvement projects while partnering with operations and business leaders.

Lead complex cloud, AI, digital transformation, and technology programmes for enterprise, public sector, and regulated-industry customers. Responsibilities include delivery planning, governance, risk management, financial controls, executive stakeholder engagement, presales support, and cross-functional team leadership. The role ensures delivery quality, customer satisfaction, and measurable business outcomes while operating across secure and regulated environments.

Lead security incident response and digital forensic investigations, act as Incident Commander, monitor and analyze security events, build scripts and automated workflows (Python), use SIEM and cloud (AWS/GCP) tooling, mentor engineers, coordinate cross-team remediation, participate in on-call rota aligned to UK/EMEA hours.

Provides on-call security coverage for a gaming property, protecting patrons, employees, guests, and company assets. Maintains property security, enforces internal controls and gaming regulations, prepares incident reports, assists during emergencies, and supports guest inquiries and escorts. Requires flexible availability for weekends, holidays, events, and varying shifts, along with compliance with licensing, background check, drug screening, CPR/AED, and bloodborne pathogen requirements.

Manages UK National Security Vetting and BPSS screening, including application sponsorship, eligibility assessments, clearance transfers, aftercare, risk identification, sensitive-data processing, and case escalation. Serves as the primary internal and external contact for vetting matters, maintains vetting systems and records, manages shared enquiries, and supports senior managers, candidates, UKSV, and client vetting teams while ensuring compliance with UK legislation and security standards.

Conduct advanced application security research across GitLab’s DevSecOps and AI-powered platforms. Identify and exploit novel, systemic, and chained vulnerabilities; develop proof-of-concept exploits, testing methodologies, and research automation; assess AI attack vectors and open-source dependencies; drive remediation and security improvements; advise engineering teams, contribute to roadmaps, mentor researchers, and share findings with the security community.

Conducts advanced application security research across GitLab’s DevSecOps and AI-powered platforms. Responsibilities include discovering and exploiting systemic vulnerabilities, penetration testing, developing proof-of-concept exploits, researching AI and agentic security threats, building automated research tooling, coordinating remediation, mentoring security professionals, and communicating findings to engineering and security communities.

Owns architecture, technical strategy, and roadmaps across Arbor’s core product suite and multiple engineering teams. The role guides architectural transformation, AI-first SDLC adoption, system design, technical debt reduction, and complex initiative delivery. It partners with product and engineering leadership, mentors Technical Leads and Senior Engineers, leads architectural reviews, and ensures quality, reliability, security, and compliance standards. This is a strategic technical leadership role focused on coaching and delivery rather than hands-on coding.

Design and govern the end-to-end architecture of Era4’s Kubernetes-based AI infrastructure. The role develops platform blueprints, technical standards, high- and low-level designs, multi-tenant GPU cloud architectures, capacity plans, and technology roadmaps. It coordinates Kubernetes, GPU, networking, storage, automation, security, observability, billing, and cloud services while guiding platform engineering and operations teams toward secure, scalable, reliable, and commercially viable solutions.

Lead Samsara’s vulnerability management and application security programs across cloud, firmware, IoT, and corporate systems. Define technical strategy, automate vulnerability detection and response, reduce remediation time, guide engineering teams, mentor security engineers, investigate critical vulnerabilities, and support incident response. The role requires strong AWS, programming, vulnerability management, application security testing, AI/LLM, and security automation expertise.

Own and evolve GitLab’s authorization systems across its Ruby on Rails monolith and next-generation Rust policy engine. Design fine-grained permissions for users, tokens, roles, and AI agents; secure GraphQL and REST APIs; lead feature-flagged rollouts and migrations; improve performance and reliability; and collaborate across authentication, platform, AI, and modular-service teams in a distributed asynchronous environment.

Provides property-wide security coverage, protects patrons, employees, and company assets, prepares incident reports, enforces internal controls and gaming regulations, assists during emergencies, and supports guests with information and escorts. Requires flexible availability for weekends, holidays, events, and varying shifts, along with compliance with licensing, background-check, drug-screening, CPR/AED, and training requirements.

Manage and grow cybersecurity channel partnerships, primarily in Germany, by recruiting partners, driving pipeline and revenue, coordinating joint sales and marketing initiatives, and managing partner performance. Build relationships with resellers, distributors, systems integrators, and technology vendors; support partner planning, compliance, opportunity registration, and conflict resolution. The role requires native German and fluent English, security SaaS channel sales experience, Salesforce and PRM knowledge, and travel up to 50%.

Develop and implement security controls across backend systems, investigate incidents and anomalies, triage bug bounty submissions, conduct threat hunting, improve remediation processes, maintain security policies, and support access governance. The role requires hands-on coding, strong PHP knowledge, security awareness, clear communication with nontechnical teams, and ownership across a broad technology stack.

Lead end-to-end incident response for high-severity security events across cloud environments, perform DFIR investigations, build detection and automation (including AI-assisted) workflows, partner cross-functionally, produce executive communications and RCAs, maintain runbooks/playbooks, and mentor other engineers within a 24/7 global on-call model.

Manage the EMEA Security Operations Center within a global 24/7 operation. Responsibilities include defining processes, workflows, and playbooks; maintaining shift coverage and quality assurance; coaching analysts; developing training; partnering with Product, Support, and security teams; improving incident response capabilities; tracking objectives and key results; operationalizing new services; and representing the company in public speaking engagements.

Owns an AI neobank product vertical end to end, including strategy, metrics, roadmap, technical design, delivery, and launch. The role involves shaping reliable financial systems across APIs, data flows, ledgering, reconciliation, security, scalability, and regulatory requirements. Responsibilities include applying AI with safeguards and evaluation, managing financial rails and third-party dependencies, and aligning engineering, design, compliance, operations, treasury, and finance. Candidates need strong technical product management experience in regulated financial or other high-consequence domains.

Develops offensive-security labs, challenges, ranges, and learning content for a cyber resilience platform. Researches vulnerabilities, tools, red-team tactics, and AI-driven attacks; tests lab functionality; translates technical findings for technical and non-technical audiences; and collaborates with Product teams on platform innovation.

Build and secure backend systems that execute untrusted user code at scale. Responsibilities include designing sandboxed runtimes, threat detection, incident response, vulnerability management, penetration testing, security reviews, vulnerability disclosure, SOC 2 maintenance, and promoting security practices across engineering. The role requires backend engineering, offensive-security curiosity, runtime isolation experience, on-call participation, and collaboration with an open-source developer tools community.

Owns the security revenue quota for an assigned territory, selling Cohesity’s cyber resilience portfolio to CISOs, security executives, and enterprise buyers. Responsibilities include generating pipeline, conducting consultative sales, building executive business cases, managing multi-stakeholder accounts, expanding product adoption, coordinating technical specialists and account executives, engaging partners, maintaining CRM hygiene, and forecasting accurately. The role requires regular customer travel and periodic travel to headquarters and company events.

Provides physical security across an industrial site by managing gatehouse access, checking visitors and vehicles, conducting patrols, monitoring activity, responding to incidents, and maintaining accurate records. The role requires professional customer service, strong communication, vigilance, reliable attendance, and the ability to work independently within a rotating 6-on, 3-off schedule. A valid frontline SIA DS or SG licence and five-year checkable employment history are required.

Own the technical win for enterprise security deals by designing ransomware-recovery, immutable backup, air-gapped vaulting, identity-resilience, and DSPM architectures. Lead discovery, demos, technical workshops, proofs of concept, pilots, executive presentations, and solution design while partnering with specialist sales executives and security partners. Serve as a security architecture subject-matter expert for CISOs and technical stakeholders, provide technical qualification, and feed field insights into product roadmaps.

Manages global corporate security activities, including access control, CCTV and alarm systems, security vendor relationships, employee training, security reporting, business resiliency planning, facility surveillance, and crisis response. The role applies security standards, resolves technical and operational issues, and supports projects of moderate scope and complexity.

Own technical direction and execution for major products and systems. Design scalable backend, frontend, API, database, and infrastructure solutions; write code; prototype; review code; debug production issues; make architecture trade-offs; convert ambiguous problems into execution plans; improve engineering quality; lead critical initiatives; and mentor engineers.