Cyber Security Jobs

Darktrace · London

Owns the end-to-end roadmap for Darktrace's Network Detection and Response product, deciding what gets built and in what order. Works directly with customers running complex zero-trust, cloud-connected and segmented estates, translating their needs into product decisions alongside R&D and Product Marketing. Acts as the internal subject matter expert for the NDR portfolio, with a hybrid working pattern based in London.

Darktrace · Cambridge

Works at the intersection of security engineering and generative AI, researching, prototyping and shaping agentic workflows within the Darktrace product ecosystem. Collaborates with product, engineering and machine learning teams to turn ideas into prototypes, while maintaining product knowledge through open-ended research projects.

eFinancialCareers · London

Engineering-led role building defensive capability against AI-driven threats, spanning AI-assisted vulnerability management, security architecture for agentic AI, and detection and response for AI-originated attacks. Sits within Citi's CISO organisation across four teams, with a mandate to ship production tooling rather than work in an innovation lab.

eFinancialCareers · London

Network Engineer role within a team of network experts, managing network delivery to completion and handing off to support teams. Administers large-scale projects, tests, documents and deploys network infrastructure solutions, working with Solutions Architecture, Operations and information security. Requires Cisco routing/switching, SD-WAN (Viptela, Meraki), Azure networking, Terraform and firewall/VPN experience.

Mimecast · London · £44,000 – £66,000 pa

Acts as the trusted technical advisor for a portfolio of mid-market accounts, working in a three-person pod with an Account Manager and Renewals Manager. Owns platform adoption, configuration health and value scoring across email security, HRM and Incydr products, and packages proof-of-value and business reviews for executive audiences. Also leads churn mitigation and identifies expansion signals ahead of renewal.

Sizewell C · London · £66,866 pa

Owns end-to-end delivery, performance and continual improvement of enterprise IT services for a major nuclear energy programme, spanning Microsoft 365, Azure, infrastructure, networks, applications and cyber security operations. Combines technical leadership with ITIL service management, supplier governance and regulatory compliance, acting as escalation point for senior stakeholders and managing multiple managed service providers.

Local Pensions Partnership · Preston · £80,000 – £85,000 pa

Sets the strategic direction for the enterprise applications portfolio and automation capability, owning the applications roadmap, governance and systems integration. Chairs the Automation Forum, oversees application performance and major incidents, and leads a multidisciplinary team while managing vendors and senior stakeholders. Distinct for combining enterprise applications leadership with automation strategy in a pension administration setting.

Darktrace · London

Security researcher role at the intersection of security engineering and generative AI, exploring, prototyping and shaping agentic workflows within the Darktrace product ecosystem. Involves identifying product use cases, designing prototypes, and coordinating with product, engineering and machine learning teams, while maintaining expertise through open-ended research.

Darktrace · Cambridge

Conducts independent and collaborative research into large language models, statistical methods and classical machine learning, prototyping ideas and implementing models into the wider software stack. Produces latency- and memory-optimised solutions for deployment on edge devices, working closely with software engineers and security analysts.

Darktrace · Cambridge

Backend engineering role focused primarily on TypeScript, prototyping and building new features for AI-driven cybersecurity products. You'll work with a cross-functional team of engineers, designers and strategists, using Docker and cloud environments, with opportunities to specialise across languages like Python, Rust and C++. Hybrid, requiring at least two days a week in the Cambridge office.

Darktrace · Cambridge

Contributes to security research projects spanning rapid prototyping and open-ended initiatives, with a focus on generative AI systems. Investigates attacker tradecraft such as prompt injection, poisoning and extraction attacks, and provides feedback to product, development and machine learning teams. Hybrid role requiring two days a week in the London or Cambridge office.

Darktrace · London

Contributes to projects spanning rapid prototyping and open-ended research into generative AI security, investigating attacker tradecraft such as prompt injection, poisoning and extraction attacks. Acts as a domain expert, feeding insights back to product, development and machine learning teams, with coverage in network, endpoint, cloud or Kubernetes.

Darktrace · Cambridge

Partners with developers and product teams to embed quality from the start, designing and maintaining automated test frameworks across API, UI, integration and regression layers. Builds scalable suites into CI/CD pipelines, drives shift-left testing, and contributes to test strategy, code reviews and architecture discussions.

Darktrace · Cambridge

Owns prototyping and development of new ideas to improve Darktrace's cybersecurity services, balancing creativity with time constraints. Collaborates with a cross-functional team of engineers, designers and technical strategists on rapid prototyping and structured platform development, advancing methods for defending against unknown cyber-attacks. Requires production-quality Python coding, with Docker and containerisation experience and an interest in malware forensics.