Senior Full Stack Software Engineer

Holt Executive; England; Hybrid; GBP 60,000 - 85,000; Full time

Job summary

A leading recruitment agency in the UK seeks a Senior Full Stack Software Engineer to contribute to mission-critical software systems for space missions. Applicants should have 5+ years of relevant experience and proficiency in Java, Python, or C++. This role offers opportunities for hybrid working and an impressive benefits package, including private healthcare and relocation assistance.

Benefits

25 days’ annual leave + bank holidays

Private healthcare

Life insurance

Long-term sick pay

Relocation assistance

Qualifications

• 5+ years’ experience developing mission-critical software in high-reliability industries.
• Proven knowledge in full stack development.

Responsibilities

• Design, develop, and maintain scalable, high-performance back-end services.
• Architect and build responsive, interactive front-end applications.
• Collaborate with cross-functional teams to implement new features.

Skills

Object-oriented programming (Java, Python, or C++)

Full stack development experience

Frontend application development with React

Troubleshooting skills

Agile/SCRUM processes participation

Education

Bachelor’s degree in Computer Science, Engineering, or related discipline

Tools

Docker

Kubernetes

CI/CD Tools

SQL databases

AWS or Azure

Job description

An exciting opportunity has arisen for a Senior Full Stack Software Engineer to join a high-performing Ground Segment Software team developing advanced mission-control solutions for cutting-edge space missions.

You’ll play a key role in designing, building, and maintaining mission-critical software systems that enable satellite operations and support a new generation of space sustainability projects. This is a hands‑on, technically challenging role ideal for someone who thrives in complex, high-impact environments, whether from the space, defence, aviation, telecoms, or automotive sectors.

For this role we can consider visa sponsorship and relocation support.

What You’ll Do

• Design, develop, and maintain scalable, high-performance back‑end services using modern programming languages.
• Architect and build responsive, interactive front‑end applications using modern frameworks.
• Design, optimise, and manage databases for reliability and performance.
• Build and manage containerised applications using Docker and Kubernetes.
• Develop and maintain CI/CD pipelines to streamline software delivery.
• Collaborate with cross‑functional teams to define, design, and implement new features.
• Troubleshoot complex issues across the stack, applying strong problem‑solving skills.
• Lead and contribute to Agile/SCRUM processes including sprint planning and retrospectives.

What You’ll Bring

• Bachelor’s degree in Computer Science, Engineering, or a related discipline (or equivalent experience).
• 5+ years’ experience developing mission‑critical software in the space or similar high‑reliability industries.
• Proven full stack development background.
• Strong proficiency in object‑oriented programming (Java, Python, or C++).
• Extensive experience building frontend applications with frameworks such as React.

Desirable Skills

• Hands‑on experience with Docker, Kubernetes, or Docker Compose.
• Experience with CI/CD tools such as GitLab CI or GitHub Actions.
• Strong command of SQL databases, data management, and Git‑based workflows.
• Experience in Agile/SCRUM environments.
• Familiarity with CCSDS or ECSS communications standards.
• Understanding of Ground Segment systems and mission operations.
• Experience with AWS or Azure cloud platforms.
• Awareness of software security best practices and coding standards.

What’s on Offer

• Opportunity to work with a talented, diverse, and international engineering team.
• Flexible working around core hours in a collaborative, supportive environment.
• Hybrid working model with an optional 9 / 75 compressed schedule.
• 25 days’ annual leave (increasing with service) + 8 bank holidays.
• Private healthcare, life insurance, and long‑term sick pay.
• Relocation assistance and visa sponsorship (where applicable).
• Modern office and cleanroom facilities.

Regular social and professional development events.

If you’re passionate about software engineering and eager to help build the systems powering next‑generation space missions, this is a fantastic opportunity to make a real impact.