Software Engineer / Senior Software Engineer

Job description

Software Engineer / Senior Software Engineer

Level: £42,000 – £70,000 (depending on level) + bonus and benefits

Location: Gloucester, UK | Hybrid & flexible working options

Function: Software Engineering | Data Processing | Cloud Development

Industry: Public Sector | National Security | Defence

Deliver software that safeguards communities. Contribute to projects that protect children, counter terrorism, and tackle serious organised crime.

Our client’s National Security team in Gloucester is expanding and seeking Software Engineers and Senior Software Engineers. You’ll develop, test, and maintain software critical to national security, collaborate with analysts and engineers, mentor junior colleagues, and contribute to technology and cyber initiatives.

About the Role

As a Software Engineer or Senior Software Engineer, you’ll design, code, test, and document software systems that support national security operations. You’ll work across teams to ensure reliability, security, and performance. Senior engineers will additionally provide technical leadership, oversee design decisions, and mentor junior developers.

What You’ll Be Doing

• Designing, coding, testing, and documenting software programs for engineered information and communications systems
• Estimating development effort for software projects and delivering solutions on time
• Working on data processing applications and AWS Cloud infrastructure
• Mentoring junior developers and providing technical oversight (Senior level)
• Analysing code defects and implementing timely fixes to maintain system reliability

Ideal Background

• Strong back-end development experience in Java, JavaScript, Node.js, Python, or C/C++
• Passion for solving complex technical problems supporting child protection, counter-terrorism, and serious organised crime
• Desire to continuously learn and develop new skills
• Knowledge of cloud engineering (AWS, Docker, Microservices) is desirable but not essential
• Comfortable working in Agile teams, sharing knowledge, and mentoring peers

What You’ll Receive

• Software Engineers: £42,000 – £62,000
• Senior Software Engineers: £60,000 – £70,000
• £5,000 referral bonus
• Hybrid and flexible working arrangements
• Career progression and professional development and certifications
• Opportunities to engage in community tech and cyber initiatives
• Inclusive culture valuing diversity, merit, and integrity

Who Should Apply

This role suits back-end or full-stack developers with Java, JavaScript, Node.js, Python, or C/C++ experience who want to make a tangible impact on national security. You should enjoy collaborating in Agile teams, mentoring others, and be eligible for UK security vetting.

Extra information

Status

Open

Education Level

Secondary School

Location

Gloucestershire

Type of Contract

Full-time jobs

Published at

05-02-2026

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English