Senior Software Engineer: Build Secure Systems

MI5; Cheltenham, Manchester; On-site; GBP 50,000 - 60,000; Full time

Benefits offered by this job

25 days annual leave

Employee recognition scheme

Cycle to work

Job summary

GCHQ is seeking a Senior Software Engineer to design and deliver mission-critical software, shaping architecture and best practices. You will contribute across the full stack, promote automation, and drive high-quality outcomes in a security-focused environment.

The role requires hands-on leadership, experience with C++, Golang, Python or Rust, and cloud/DevOps capabilities. Cheltenham or Manchester locations with hybrid work options are supported.

Qualifications

• Proven experience as a software engineer delivering production systems.
• Strong proficiency in at least one modern language (C++, Python, Go, Rust).
• Experience with cloud platforms (AWS/Azure/GCP) and DevOps practices.

Responsibilities

• Architect and design software systems for mission critical tasks.
• Lead and mentor teams in best engineering practices.
• Implement scalable, reliable software with modern tooling and automation.
• Collaborate with stakeholders to translate complex requirements into robust solutions.

Skills

C++

Golang

Python

Rust

Kubernetes

DevOps

Cloud platforms

Tools

CMake

HELM

YAML

JSON

VCPkg

Linux

Job description

GCHQ is seeking a Senior Software Engineer to design and deliver mission-critical software, shaping architecture and best practices. You will contribute across the full stack, promote automation, and drive high-quality outcomes in a security-focused environment.

The role requires hands-on leadership, experience with C++, Golang, Python or Rust, and cloud/DevOps capabilities. Cheltenham or Manchester locations with hybrid work options are supported.