Cyber Security Jobs

• London
• Mid-level

Builds and maintains a Chromium-based browser engine, remote rendering and streaming tech, and distributed services that run browser sessions across a global network. Day-to-day work spans C++ browser code, Go/Rust/TypeScript services, debugging across browser processes and Linux hosts, and improving latency and reliability, with production on-call.

Chromium · Cloudflare Workers · Nomad +3

• London
• Hybrid · 2 days in office
• Senior

Design, build and operate distributed systems behind Cloudflare's Application Security products (WAF, Page Shield, API Shield) at internet scale, using Go or Rust and devops tooling like Kubernetes and Kafka. The role includes reviewing RFCs and code, on-call shifts, and mentoring other engineers.

Kubernetes · Salt · Kafka +7

• United Kingdom
• Remote
• Entry level

Monitors and performs in-depth analysis of security alerts on the CrowdStrike platform, handling incidents across Windows, Mac and Linux, including malware analysis and remote remediation. Works in a virtual security operations centre, responding to threats in real time and producing written and verbal findings for customer management.

CrowdStrike · Windows · Mac OS +6

• United Kingdom
• Remote
• Mid-level

Lead and support cloud incident response engagements and security assessments for clients, analysing cloud and hybrid architectures and providing remediation guidance. The role also involves mentoring junior consultants, developing internal and open-source tooling, and researching emerging cloud security techniques.

AWS · Azure · GCP +4

• Bangor
• £21,805 pa
• Entry level
• Contract

Fully funded three-year PhD studentship researching physical-layer network security within Bangor University's DSP Centre, supported by EPSRC and regional innovation projects. The role involves theoretical and experimental work on optical, wireless and 5G/6G communications, joint communications and sensing, and signal processing, alongside publishing, presenting and assisting with undergraduate supervision.

• Manchester
• £58,500 – £71,500 pa
• Lead
• Permanent

Owns the Group's infrastructure estate across Microsoft 365, Azure, networks, security and end-user services, acting as primary technical owner of the MSP and suppliers. Leads modernisation of multi-site networking, identity and endpoint security using Entra ID, Intune and Autopilot, plus resilience, DR and governance work.

Microsoft 365 · Azure · Entra ID +4

• Chippenham
• Hybrid
• Senior
• Permanent

Provide end-to-end cyber security support for Spacecraft Control Centre Systems and Satellite Communications infrastructures, analysing functional needs, setting criticality levels and proposing protection concepts. Coordinate security architecture across disciplines, manage risks and ensure defences stay ahead of evolving threats. Requires CISSP/CISM and hands-on knowledge of Solaris, Linux, Windows, Cisco and JSP440.

Solaris · Linux · Windows +1

• Bristol
• £50,000 – £80,000 pa
• Senior

Designs secure network and infrastructure architectures and delivers security assurance and accreditation artefacts for central government and public sector clients. Works across the full systems lifecycle with delivery teams and engineers, assessing environments against CAF, NIST, Cyber Essentials and SbD. Requires TOGAF certification and SC clearance eligibility.

TOGAF · JSP 440 · JSP 604

• Moore, United States
• Hybrid
• Senior · manages people

Lead delivery of OT cybersecurity consultancy for high-hazard sectors, managing site audits, compliance assessments, vulnerability analyses and risk assessments. Build CSMS aligned to IEC 62443, CAF, OG86 and NIS, advise clients on roadmaps, mentor junior staff and drive business development. Hybrid role with UK travel.

Microsoft Office Suite

• Aberdeen
• Hybrid
• £650 – £720 pd
• Senior
• Contract

Lead and coordinate cybersecurity assessments, risk remediation and control improvements across Operational Technology environments, translating security gaps into practical remediation plans. Work with OT/ICS engineers, IT, technical authorities and third-party suppliers to strengthen critical operational systems, covering asset inventories, privileged access, network segmentation, monitoring and incident response.

SIEM · NIST Cybersecurity Framework · ISO 27001

• Nottingham
• £26,100 pa
• Junior

Support the monitoring and protection of business systems for a growing financial services organisation, identifying security threats and keeping critical financial data secure. Day to day involves monitoring security alerts, reviewing logs, investigating incidents, maintaining documentation and supporting security testing and compliance activities.

• Sutton-in-Ashfield
• £26,100 pa
• Junior

Support the monitoring and protection of business systems for a growing financial services organisation, identifying security threats and keeping critical financial data secure. Day to day involves monitoring security alerts, reviewing logs, investigating incidents, and maintaining documentation, with hands-on exposure to security monitoring tools and incident management processes.

• Ipswich
• Hybrid
• £55,000 – £65,000 pa
• Mid-level

Lead infrastructure modernisation, technology standardisation, cybersecurity improvements and acquisition integration across a growing multi-site organisation. Partner with senior stakeholders, operational teams and third-party MSPs to build a secure, resilient and scalable IT environment, with regular UK site travel.

Microsoft Azure · Microsoft 365 · SD-WAN

• Cambridge
• Hybrid
• £60,000 – £70,000 pa
• Senior

Senior role shaping system design and test criteria for Linux-based embedded systems, leading software security work including Hardware Root of Trust, Secure Boot and TPM integration. Day to day involves embedded C development, Yocto build systems and Linux kernel work, integrating software with hardware via I2C, SPI and UART, plus root-cause debugging. The position also includes mentoring junior engineers within an Agile R&D environment.

Linux · Yocto · Jenkins +6

• London
• Mid-level
• Permanent

Respond to security incidents across AWS cloud services, triaging issues and driving internal teams to timely remediation while balancing technical and business risk. Build internal automation tools and utilities, mentor junior staff, and share on-call responsibilities. Works within AWS Cloud Response, coordinating multi-team responses and publishing guidance for customer-impacting issues.

AWS