Senior Software Engineer

Senior Software Engineer 

Salary: £75,000–£90,000 

Location: UK-wide (Hybrid / On-site options available) 

Working Pattern: Full-time 

This position requires valid UK work eligibility. Visa sponsorship is not available for this role.

The Opportunity 

Our client is a leading organisation in the UK defence sector who has multiple Senior Software Engineer openings, spanning a range of technical specialisms and project areas. As their engineering capability continues to grow, they are seeking experienced and highly capable engineers to help deliver secure, complex, and mission-critical software systems. 

These roles give you the opportunity to work on impactful defence projects that push the boundaries of digital engineering in the UK. The environment is fast-paced and technically demanding, but the impact of the work is significant and highly tangible. You’ll be exposed to new approaches, technologies, and ideas on a regular basis, so a willingness to step outside your comfort zone and embrace continuous learning is essential. 

As a senior engineer, you’ll influence architecture, tackle challenging technical problems, and contribute to the delivery of robust, scalable systems that support vital national programmes. 

What You’ll Do 

• Lead the design, development, and maintenance of software components across high-performance and mission-critical systems. 
• Own the full software lifecycle, from architecture and design through to implementation, testing, and release. 
• Work closely with multidisciplinary engineering teams to deliver secure, reliable, and innovative solutions. 
• Champion engineering best practice, including Agile, DevOps, CI/CD, and automation. 
• Provide mentorship, technical oversight, and support to other engineers within the team. 
• Drive continuous improvement by exploring and adopting new technologies, tools, and methodologies. 

What We’re Looking For 

We welcome applications from senior engineers with strong technical foundations and expertise in: 

Core Programming Skills 

• Any of C, C++, C#, Java, Python or similar 
• Embedded, real-time, or systems-level development 

Engineering Practices & Tooling 

• Strong experience with Git-based version control 
• CI/CD pipelines (Azure DevOps, Terraform, or similar) 
• Agile or Scrum delivery environments 
• Automated testing, TDD, or system testing frameworks 

Desirable Experience 

• Cloud platforms (AWS or Azure) 
• Containerisation & Infrastructure as Code (Docker, Terraform) 
• Web frameworks such as .NET / ASP.NET, React, Angular, Vue.js, Node.js, Spring Boot, Django, or Flask 
• Scripting (Bash, Shell, or PowerShell) 
• Networking, security, and systems integration 
• High-performance or simulation software 
• Model-based or simulation-driven development 
• Experience influencing architectural decisions or mentoring engineering teams 
• Prior experience in defence, aerospace, or other safety-/security-critical environments (advantageous) 

If you’re motivated by solving complex engineering challenges and want to work on systems with genuine real-world impact, this could be the ideal next step. 

What’s on Offer 

• Competitive salary 
• Flexible and hybrid working options 
• Excellent pension contribution scheme 
• Additional leave and work–life balance initiatives 
• Ongoing training, professional development, and clear career progression 
• Access to modern facilities and collaborative engineering environments 

About the Roles 

These positions sit at the heart of our client’s advanced engineering programmes, supporting the development of next-generation defence technologies. You’ll have the opportunity to work with cutting-edge tools, contribute to innovative solutions, and help build secure, intelligent, and highly connected digital systems. 

Interested? 

If you're an experienced engineer ready to take on a senior role in the defence sector, we’d love to hear from you.