Principal Software Engineer

Principal Software Engineer – National Security - SC Clearance

Role: Principal Software Engineer

Location: Cheltenham - Hybrid Work

Clearance: SC Cleared / Eligible for SC

Salary: £75,000 - £95,000

About the Role

Searchability NS&D is recruiting a Principal Software Engineers to join an Agile delivery team supporting a range of complex and high-impact Central Government and Critical National Infrastructure projects. You’ll help design, develop, and deploy bespoke software solutions that deliver real-world mission value.

In this senior technical role, you’ll lead a team of software engineers, shape architectural decisions, and engage directly with senior customer stakeholders to deliver high-impact solutions.

What You’ll Do

• Design, develop, and test robust software solutions using modern engineering practices.
• Work with a range of open-source libraries, frameworks, and components.
• Build and maintain CI/CD pipelines using tools such as GitLab , ensuring code quality and security.
• Deploy software systems across public (AWS) and private cloud environments.
• Engage in all stages of the software lifecycle — from requirements analysis to support and maintenance.
• Collaborate closely with clients and multidisciplinary teams in an Agile environment.

About You

We’re particularly interested in Full Stack Engineers with commercial experience in:

• Extensive full stack commercial experience using a range of languages / technologies including Java & AWS
• Agile development environments.
• Building, testing, and deploying modern cloud-based applications.
• Previous consultancy experience is beneficial but not essential.
• You’ll be proactive, collaborative, and motivated to work on meaningful, technically challenging projects that make a difference.

Due to the nature of work, you must be willing and eligible to gain UK Security Clearance. To qualify for this, you must be a British passport holder and have lived permanently in the UK for the last 5 years.

Culture & Benefits

We take pride in creating an environment where everyone can thrive — valuing innovation, teamwork, and personal growth.

• Wellbeing: Free 24/7 counselling helpline and employee assistance programme
• Flexibility: Cheltenham office with hybrid working available
• Growth: Dedicated career coach to support personal and professional development
• Social: Regular team get-togethers, summer parties, and annual company away-days
• Onsite Allowances: Expenses provided for lunch and refreshments

Apply

If you’re an ambitious Software Engineer looking to apply your skills to impactful, mission-focused projects, we’d love to hear from you.

#Java #AWS #React #JavaScript #TypeScript #Kubernetes #Docker #SC #SCCleared #FullStack