Cyber Security Jobs

• Derby
• On-site
• £25,000 – £60,000 pa
• Permanent

Develops and tests high-integrity software for encryption and secure communications products, working in embedded C/C++ with a strong focus on functional correctness, formally defined specifications and industry standards. Involves unit and automated testing, code reviews, static analysis and technical documentation within a small, highly skilled engineering team.

LDRA · Parasoft

• Portugal - Field
• Hybrid · 3 days in office
• Senior

Builds and maintains the iOS SDK for document capture, working on camera capabilities, on-device image processing and machine learning to help end users capture quality identity documents. Collaborates with designers, product managers and engineers in an agile team, using Swift and contributing to test automation and CI/CD pipelines.

iOS SDK · React Native · Flutter +3

• London
• Mid-level

Own the full software development lifecycle for distributed systems supporting threat disruption and legal response, building data pipelines that collect and expose threat intelligence for analysts and customers. Work primarily in Golang and TypeScript with Rust, Kafka, Redis, Kubernetes, Terraform and Postgres, collaborating with Threat Intelligence, Trust & Safety, Legal and Product teams, plus on-call rotations and mentoring.

Golang · TypeScript · Rust +7

• London
• Hybrid
• Mid-level

Builds new features and systems for Cloudflare's edge web server, focusing on the rules engine and its control plane. Works in Rust and Go on large-scale distributed systems, performance engineering, and reliability across a platform handling over 100 million HTTP requests per second.

Rust · Go · Cloudflare

• Cambridge
• Hybrid · 2 days in office
• Mid-level

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.

Docker

• Cambridge
• Hybrid · 2 days in office
• Mid-level

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.

Cypress · Playwright · pytest +7

• Birmingham
• £500 – £560 pd
• Contract

Support the design, development, operation and optimisation of an Elastic-based SIEM platform, strengthening threat detection, security monitoring and incident response. Configure Elasticsearch pipelines to ingest security data including from Kafka, refine queries, rules, alerts and dashboards, and work with security analysts, architects and Security Operations across transitions and transformations.

Elasticsearch · Logstash · Kibana +7

• London
• On-site
• Senior

Builds and maintains iOS SDKs for document capture, working on camera capabilities, on-device image processing and machine learning. Collaborates with designers, product managers and engineers to ship scalable, accessible experiences, contributing to test automation and CI/CD pipelines in an agile team.

iOS SDK · React Native · Flutter +3

• Derby
• On-site
• £40,000 – £70,000 pa
• Permanent

Design, develop and test embedded software in C/C++ for secure communications products, working with RTOS, ARM microcontrollers and register-level programming. The role involves unit testing, static analysis, code reviews and technical documentation within a multidisciplinary team, with security and quality central to delivery.

STM32 · JTAG · ETM +2

• London
• Senior
• Permanent

Builds greenfield security software that automates pentest workflows and surfaces critical security details about every Amazon application. Works with local and international security teams on scalable, mission-critical systems, rapidly prototyping tools that reduce manual security processes and protect customer data across Amazon's ecosystem.

AWS

• London
• On-site
• Senior

Design and build software to solve Workload Identity challenges, from prototyping to production, covering both client and server. Work across networking, security, cloud, Kubernetes, encryption, PKI, JWT and SPIFFE, with Golang development, while mentoring a close-knit team and engaging internal and external stakeholders on technical trade-offs.

Kubernetes · Windows API · SPIFFE +2

• 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

• Germany
• 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 deployment and long-term maintenance. Works fully remotely across time zones, gathering requirements from analysts and choosing the technology stack, with existing Go and Python codebases to maintain.

AWS · GCP · EC2 +4

• 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

• Capenhurst
• Hybrid · 2 days in office
• £55,000 – £65,000 pa
• Mid-level
• Permanent

Own and improve cloud-hosted infrastructure, Azure DevOps CI/CD pipelines and Terraform-based infrastructure as code, while supporting BAU operations and security controls. Work closely with software engineers to streamline deployments and reduce their infrastructure burden, with scope to shape automation and governance practices.

Terraform · Azure DevOps · Azure Pipelines +3