Senior Software Engineer

Addition
Farnborough, GU14 7JT, United Kingdom
Yesterday
£85,000 pa

Salary

£85,000 pa

Job Type
Permanent
Work Location
Hybrid
Seniority
Senior
Education
Degree
Security Clearance
Required
Posted
8 Jun 2026 (Yesterday)

Benefits

Private medical cover Life assurance Enhanced pension Professional development support 25 days holiday plus bank holidays Onsite facilities including gym, café, restaurant, secure parking, and breakout spaces Annual bonus scheme

Senior Software Engineer

Join a specialist technology business delivering secure, mission-critical digital solutions that support Defence and National Security operations. This is an opportunity to work on complex engineering challenges, building innovative software that has a genuine impact on critical decision-making and operational success.

A note on Security Clearance: Due to the nature of the work, candidates must be eligible to obtain UK Security Clearance.

Role Overview:

  • Location: Farnborough (Hybrid)
  • Package: Competitive Salary + bonus, private medical cover, life assurance, enhanced pension, professional development support, and additional onsite benefits
  • Industry: Defence Technology / National Security

What You’ll Be Doing:

  • Design, develop, and maintain secure, scalable software solutions within highly secure environments.
  • Collaborate with engineers, architects, and delivery teams to solve complex technical challenges.
  • Build modern front-end applications using React and TypeScript.
  • Develop robust backend services using Java, Python, or Go.
  • Deploy and manage cloud-based solutions across AWS or Azure platforms.
  • Use Docker and container technologies to support consistent, efficient deployments.
  • Implement and improve CI/CD pipelines to streamline software delivery.
  • Participate in code reviews and contribute to engineering best practices.
  • Support the delivery of secure, reliable systems that enable mission-critical operations.
  • Stay current with emerging technologies and continuously improve development approaches.

Main Skills Needed:

  • Commercial software engineering experience across modern full-stack environments.
  • Strong knowledge of JavaScript/TypeScript and React development.
  • Backend development expertise with Java, Python, or Go.
  • Experience working with AWS and/or Azure cloud services.
  • Solid understanding of Git and collaborative development workflows.
  • Knowledge of Docker and containerised application deployment.
  • Familiarity with CI/CD pipelines, automated testing, and DevOps practices.
  • Understanding of software engineering fundamentals, algorithms, and data structures.
  • Exposure to Kubernetes or other container orchestration platforms.
  • Awareness of web security principles and secure development practices.
  • Experience working within Agile delivery environments.
  • Strong communication, collaboration, and problem-solving skills.

What’s in It for You:

  • Work on technology that directly supports national security and defence outcomes.
  • Join a collaborative, highly skilled team focused on innovation and continuous improvement.
  • Hybrid working model offering flexibility and balance.
  • Annual bonus scheme.
  • 25 days holiday plus bank holidays.
  • Private medical insurance and life assurance.
  • Generous pension contribution package.
  • Ongoing training, certification, and professional development opportunities.
  • Access to onsite facilities including gym, café, restaurant, secure parking, and breakout spaces.
  • Opportunity to work with cutting-edge cloud and secure technology solutions.
  • Be part of a growing organisation with ambitious plans and clear opportunities for progression.

Big plans. Big impact. Ready to be part of it?

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

By applying you are confirming you are happy to be added to the Addition Solutions mailing list regarding future suitable positions. You can opt out of this at any time simply by contacting one of our consultants.

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Discover insightful articles, industry insights, expert tips, and curated resources.

Where to Advertise Cyber Security Jobs in the UK (2026 Guide)

Where to advertise cyber security jobs UK in 2026: the specialist boards, communities and channels that reach offensive, defensive and GRC security talent. The candidate pool is small, heavily vetted and in high demand across government, financial services, critical national infrastructure and the private sector simultaneously. Many of the strongest candidates hold active security clearances, are not actively job-searching through general platforms, and move primarily through specialist networks and trusted referrals. General job boards reach a broad audience but lack the specificity that security professionals expect. Specialist platforms, government-affiliated channels and cleared candidate networks each serve a different part of the market. This guide, published by CybersecurityJobs.tech, covers where to advertise cyber security roles in the UK in 2026, how the main platforms compare, what employers should expect to pay, and what the data says about hiring across different role types.