Cyber Security Jobs

• United Kingdom - Field
• Senior

Senior individual contributor providing cross-team technical leadership for quality engineering across a multi-tenant SaaS platform. Defines automation architecture and risk-based quality strategies, builds reusable test frameworks, and embeds unit, integration, contract, API and end-to-end testing into CI/CD pipelines. Leads performance, scalability and resilience validation, including fault injection and chaos testing, while mentoring engineers and influencing release decisions.

Kubernetes · OAuth 2.0 · mTLS +4

• Cambridge
• Senior

Provides technical leadership for FPGA-based solutions in security-focused systems, owning architecture, VHDL RTL design, verification, and integration with embedded and host software. Balances hands-on implementation with planning, estimation, and mentoring, while defining development processes such as CI/CD and configuration management.

Xilinx · Zynq · Versal +6

• Cambridge
• Hybrid · 2 days in office
• Senior

Works within Cambridge R&D teams on high-impact projects spanning rapid prototyping and structured platform development, providing expert technical direction and mentoring engineers across languages such as Python, JavaScript, Rust and C++. The role advances a unique methodology for defending against unknown cyber-attacks, using Docker, cloud environments and CI/CD pipelines, and involves engaging with executive leadership on technical strategy.

Docker · Git · Cloud Computing

• London
• Hybrid · 2 days in office
• Senior

Joins R&D teams to build and enhance cybersecurity products, providing technical direction across rapid prototyping and structured platform development. Involves advancing malware-defence methodology, mentoring engineers in Python, JavaScript, Rust and C++, and working with Docker, cloud environments and CI/CD pipelines. Hybrid role with two days a week in the Cambridge office.

Docker · Git · Cloud Computing

• Ireland
• Remote
• Senior

Builds and operates large-scale data processing pipelines, storage systems and presentation layers for the Intelligence team, owning systems from design through prototyping, implementation and production operations. Works autonomously on a distributed remote team, gathering requirements from analysts and choosing the technology stack, with existing Go and Python codebases to maintain.

AWS · GCP · EC2 +5

• Romania
• Remote
• Senior

Builds and operates large-scale data processing pipelines, storage systems and presentation layers for the Intelligence team, owning systems from design and prototyping through production operations. Works autonomously on a distributed remote team, gathering requirements from analysts and choosing the technology stack, with existing Go and Python codebases to maintain.

AWS · GCP · EC2 +3

• 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

• London
• Permanent

Join a Security Operations Centre to build detections for suspicious and malicious behaviour, respond to security incidents, and engineer automation and AI-driven solutions that improve team efficiency. You'll collaborate with data scientists, software engineers and security experts to protect AWS infrastructure and UK customers at massive scale.

AWS

• London
• Mid-level

Acts as primary technical responder for premium enterprise customers, autonomously investigating complex threat telemetry and handling live incident response for volumetric DDoS and application-layer attacks. Implements mitigation across OSI Layers 3, 4 and 7 using Cloudflare's security suite, performs packet and traffic flow analysis, and advises customers during active incidents. Requires 24x7 rotating shifts.

Cloudflare · Magic Transit · Magic Firewall +7

• Basingstoke
• Hybrid
• £41,000 – £45,000 pa
• Entry level
• Contract

A KTP Associate role transforming in-house cybersecurity software using Large Language Models and NLP, building real-time threat detection and clear user-facing responses. Involves developing UI and API integrations, working with large datasets and PyTorch, and acting as project lead while embedding technology and upskilling company staff.

PyTorch

• Kings Hill
• Hybrid
• £54,500 – £55,000 pa
• Mid-level
• Permanent

Monitor, triage and investigate security alerts, incidents and requests, managing records through to closure and coordinating recovery. Use tools such as Tenable and Darktrace across cloud and wider IT infrastructure, supporting vulnerability management, threat intelligence and malware analysis, with on-call backup for emergency response.

Tenable · Darktrace

• Knutsford
• Senior · manages people

Hands-on engineering role safeguarding encryption keys and cryptographic services across 300+ enterprise platforms, working extensively with Thales and Entrust HSMs. Involves key management, certificate management, production support, and on-call rotation, with occasional off-site data centre work.

Thales · Entrust · SharePoint +5

• Coventry
• Hybrid · 3 days in office
• £455 pm
• Senior
• Contract · Part time

Designs, implements and maintains enterprise network security across on-prem, cloud and hybrid environments, leading Zero Trust and segmentation initiatives. Hands-on with enterprise firewalls, Azure/AWS network security, VPNs and secure remote access, while collaborating with SOC teams on detection and response. Contract role with three days per week on-site in Coventry.

Palo Alto · Check Point · Cisco Firepower +7

• London
• Hybrid · 2–3 days in office
• £90,000 – £100,000 pa
• Senior

Owns and matures security operations across cloud, endpoint and SaaS environments, covering detection engineering, incident response, vulnerability management and AWS/GCP security posture. Over time shifts toward security engineering and architecture, designing scalable telemetry and detection platforms and embedding secure-by-design principles with engineering teams.

AWS · GCP · SIEM +7

• London
• On-site
• Senior

Provide advanced technical support for Cortex XSIAM customers, triaging tickets, calls and escalations within SLAs and performing application- and OS-level troubleshooting. Work with developers to reproduce issues and implement permanent fixes, and with technical account managers to mitigate risk in customer environments. Requires SIEM, EDR and endpoint security expertise plus UK security clearance.

Cortex XSIAM · Kubernetes · GCP +10