Senior Software Engineer - National Security

CACI Ltd; Cheltenham; On-site; GBP 50,000 - 70,000; Full time

Job summary

A specialist software consultancy is seeking a Senior Software Engineer to join the National Security team. The role involves designing and developing bespoke software solutions while ensuring security and quality. Candidates must hold a high-level security clearance and be based in the UK. The position offers flexibility and a dynamic environment with various employee benefits.

Benefits

Free 24/7 counselling helpline

Work flexibility

Career coaching

Regular social events

Onsite allowances for lunch and drinks

Qualifications

• Experience in designing and developing software solutions.
• High-level security clearance required.
• Ability to work in diverse environments.

Responsibilities

• Design, develop, and test software solutions.
• Utilize open-source libraries and components.
• Lead teams and manage client engagement.

Skills

Software development

CI pipelines

AWS

Azure

Team leadership

Tools

GitLab

Job description

Senior Software Engineer - National Security

Manchester, UK

Job Description

Posted Monday 16 June 2025 at 00:00

About Us:

We are the Information Intelligence Group (IIG) of CACI UK, a specialist software consultancy providing bespoke solutions to solve complex operational problems for our customers. As our business continues to grow, we are seeking an experienced Software Engineer to join a live project within the National Security team.

Ideal candidates will hold high-level security clearance and be able to support customers in Bristol, Cheltenham, and Manchester. Due to the sector's nature, this role requires a 4 to 5-day in-office presence per week.

Our Mission:

To support government departments in making critical decisions that enhance the UK's security and prosperity. Our work is central to national security, making us a vital part of the UK's safety infrastructure. With a team of over 600 skilled professionals, we are dedicated to delivering impactful solutions.

This role involves more than coding; it's about playing a crucial part in protecting the UK. You will develop mission-critical systems and contribute to national security.

The Opportunity:

Join our agile teams working on diverse, complex projects to build bespoke software solutions and enhance capabilities. As a Senior Software Engineer, your responsibilities include:

• Designing, developing, and testing software solutions
• Utilizing open-source libraries and components
• Building CI pipelines with tools like GitLab to ensure quality and security
• Deploying systems across various environments, including AWS and Azure
• Engaging in all software lifecycle stages from concept to maintenance
• Leading teams and managing client engagement (depending on experience)

The Fit:

Due to industry requirements, all team members must obtain security clearance, which necessitates being a British passport holder and having lived in the UK for the past 5 years.

We pride ourselves on providing a dynamic, inclusive, and supportive environment where everyone can thrive. Our benefits package reflects our commitment to our staff.

• Wellbeing: Free 24/7 counselling helpline and employee assistance
• Work Flexibility: City-centre offices with flexitime and remote options
• Learning & Growth: Career coaching and development opportunities
• Social: Regular events, including socials, summer parties, and away days
• Onsite Allowances: Expenses for lunch and drinks

CACI is an equal opportunities employer committed to diversity and inclusion. We provide reasonable adjustments during recruitment and support candidates with health conditions or disabilities.