Top Cyber Security Jobs in Bristol

Own technical direction and hands-on execution for major products and systems. Design scalable, reliable architectures across backend, frontend, APIs, databases, and infrastructure; write code; lead architecture decisions; solve production issues; improve engineering quality, testing, security, and observability; and mentor engineers across teams.

Amentum seeks active eDV-cleared professionals for project management, programme delivery, PMO, systems engineering, enterprise architecture, business analysis, and transformation roles supporting UK national security programmes. Candidates will work in multidisciplinary teams on complex, highly secure government projects, engaging stakeholders and delivering outcomes across the project lifecycle. Roles are based in London, South West England, or Manchester, with at least four days per week on customer sites and possible programme-related travel.

Own the full sales cycle for mid-market accounts, driving adoption and expansion of Elastic’s search, AI, observability, and security solutions. Build territory plans, identify use cases, conduct discovery, manage complex sales cycles, negotiate contracts, and close deals. Partner with Solutions Architects, Customer Success, Marketing, and RevOps while forecasting accurately and positioning technical capabilities against measurable business outcomes.

Operate within a SOC to monitor and investigate security alerts, configure and optimize SIEM and vulnerability tooling, perform packet/log analysis and threat modeling, develop detection rules (SNORT, YARA), support incident response, mentor junior analysts, and improve SOC processes to meet SLAs/KPIs.

Conduct outbound cold calls and emails, identify prospect needs, qualify marketing leads, and create new business opportunities. The representative will manage sales targets, collaborate across sales teams, communicate with senior stakeholders, and serve as a subject matter expert on Abnormal AI products. The role requires fluent French, strong communication, organization, resilience, sales planning, and familiarity with outbound sales techniques and AI-assisted prospecting tools.

Build and maintain Ruby on Rails backend features for vulnerability management, including security dashboards, reports, and ingestion pipelines. Improve system performance, reliability, and scalability; collaborate across backend, frontend, product, design, and security teams; review code; address technical debt; and participate in on-call rotations. The role requires relational database experience, distributed-team collaboration, technical problem-solving, and contributions across the stack when needed.

Own the full enterprise sales cycle across the UK, from prospecting and pipeline development through negotiation and closing. Drive new-logo acquisition, manage complex multi-stakeholder deals, deliver tailored demonstrations and proof-of-value engagements, and build trusted customer relationships. Collaborate with Sales Engineering, Product, Marketing, and leadership while maintaining forecasts in Salesforce. The role also includes mentoring junior team members and consistently exceeding sales quotas.

Own day-to-day security operations across endpoints, identity and access, cloud, and SaaS tools. Administer MDM, patching, encryption, device compliance, and joiner/mover/leaver processes. Monitor alerts, investigate incidents, support access reviews, and improve security controls. Contribute compliance evidence for SOC 2, ISO 27001, and ISO 42001, plus vendor and customer security questionnaires. The role also provides practical desktop and device support while developing broader audit, compliance, and vendor-risk expertise.

Supports cybersecurity governance, risk, and compliance across multiple client accounts. Partners with executives and stakeholders to align security requirements with policies, contracts, and regulations; monitors compliance, coordinates remediation and incident response, assesses risks, prepares security reporting, reviews security requirements in RFPs and contracts, and supports security control implementation and continuous improvement.

Lead field-facing AI security strategy for enterprise customers by designing secure LLM/RAG architectures, delivering demos and POVs, advising on data protection and unsanctioned AI usage, and scaling enablement and product feedback across sales, product, and engineering teams.

Senior security researcher responsible for large-scale data collection and analysis, operating and building honeypots, performing vulnerability research and reverse engineering, developing automated tooling and GenAI/LLM workflows, collaborating with intelligence teams, reproducing vulnerabilities, and publishing technical research.

Leads security operations by managing major incidents, engineering SIEM detections, applying MITRE ATT&CK, developing automated response workflows, and improving threat-informed monitoring. Partners with engineering and platform teams on cloud security, vulnerability management, threat modeling, and security architecture. Provides technical leadership, mentors analysts, reports operational metrics, and supports ISO 27001, SOC 2, and NIS2 compliance.

Defines and governs secure, resilient enterprise technology architecture across on-premises, hybrid, multi-cloud, data center, AI/ML, edge, and emerging technology environments. Establishes architecture standards, controls, guardrails, threat modeling, detection engineering, and secure runbooks. Leads modernization roadmaps, risk assessments, design assurance, and technical trade-off decisions while embedding security into DevOps and platform engineering. Partners with enterprise architects, cybersecurity, SOC, risk, legal, vendors, and technology teams, and provides architectural leadership and mentoring.

Develops Elastic’s footprint within UK Defence by expanding existing business, building relationships, generating demand, identifying use cases, managing complex sales cycles, closing transactions, and growing territory revenue through customer, partner, and defence community ecosystems. The role requires SaaS sales expertise, defence-sector relationships, accurate forecasting, open-source go-to-market knowledge, and an active security clearance.

Lead and scale strategic partner motions (channels, GSIs, ISVs, OEMs, cloud, silicon) to drive joint go-to-market plans, revenue, and market expansion. Build executive relationships, enable partners technically and commercially, establish pipeline governance, and coordinate product, sales, marketing, and engineering to convert partner potential into measurable customer impact.

Drive cloud security sales across Northern Europe: build territory plan and pipeline, lead end-to-end Falcon Cloud Security deals, enable regional account teams, engage technical and executive stakeholders, support post-sale adoption and expansion, and provide product and market feedback. Travel up to 50%.

Leads global cybersecurity architecture across IT and OT environments, including architecture roadmaps, standards, solution design, governance, technology improvements, risk remediation, threat intelligence, incident response, penetration testing, and cyber accreditation. Partners with stakeholders, suppliers, and technical authorities to improve resilience and security while supporting client cyber health-check services and periodically visiting operational sites.

Administer and support Microsoft 365 productivity platforms, resolve escalated technical issues, design permanent solutions and automations, lead projects, deliver trainings, create reports, and collaborate across teams to improve service stability.

Own strategic post-sales relationships for enterprise customers adopting AI security and governance. Advise stakeholders from security practitioners to CISOs on AI environments, risks, governance, and use cases. Define measurable outcomes, drive platform adoption, support retention and expansion, and coordinate Product, Engineering, Security, Support, and customer operationalization teams. Translate complex AI security capabilities into practical strategies and communicate customer insights internally.

Provide hands-on technical leadership for post-sales customer deployments of an AI security and governance platform. Translate use cases into configurations, integrations, automations, workflows, and production-readiness plans. Diagnose complex technical issues, guide API and scripting integrations, lead customer workshops, create reusable runbooks, and coordinate escalations with Support and Engineering. The role partners across Customer Solutions, Product, Research, Security, and Support to drive scalable technical adoption.

Own the technical sales cycle from demo through POC to technical win. Deliver tailored demos, engage customer security and engineering teams, provide architecture guidance, support technical validation and objections, and act as a bridge to Product & Engineering. Represent OX at customer meetings and events.

Drives digital transformation and information management across a secure defence programme. Develops complex information and business architecture models, aligns digital strategies with client needs, identifies risks, coordinates stakeholders, facilitates workshops, analyzes project data, produces documentation, supports bids, researches technologies, and contributes to team development and quality assurance. The role requires onsite work three days weekly in London, Bristol, or Manchester, with travel to other client sites as needed.

Provide on-site security coverage for patrons and employees across the property, enforce gaming and company policies, prepare incident reports, assist in emergencies, and support guest services while maintaining required licenses and certifications.

Lead and manage a cross-functional engineering team to design, build, and operate a high-scale payments app. Drive architecture, delivery, code quality, reliability, observability, and incident response while coaching engineers and improving processes to ship customer-focused products quickly and reliably.

Lead and grow a high-performing engineering team building scalable, customer-facing products. Own engineering delivery, architecture, code quality, observability, incident response, and engineering culture. Partner with product, design, mobile, backend and AI teams to turn ambiguous problems into production systems while coaching engineers and improving processes to deliver reliable, high-quality outcomes.