Software Engineer – Security & Intelligence

Envitia Group; Cheltenham, Greater London, Manchester; Hybrid; GBP 45,000 - 65,000; Full time

Benefits offered by this job

Annual Leave: 25 days plus your birthday off.

Private Healthcare Coverage.

Training & Skills Development.

Fitness Reimbursement.

Life Assurance.

Pension Contribution.

Perkbox Subscription.

Internal Reward Schemes.

Community Engagement Opportunities.

Job summary

Envitia Group is seeking a skilled Software Engineer to work on designing, developing, integrating, and maintaining secure software services within classified environments. The successful candidate will leverage their knowledge of programming languages and engineering practices to deliver impactful outcomes.

The role requires strong technical skills and offers the chance to work in dynamic Agile teams. This role is based in Cheltenham, requiring a significant on-site presence to collaborate on mission-critical applications.

Qualifications

• Experience working within the UK Security & Intelligence or defence.
• Strong knowledge of secure application development.
• Proficiency in APIs and full-stack applications.

Responsibilities

• Design, develop and maintain secure software applications.
• Build scalable distributed systems.
• Contribute to software design and architecture.

Skills

Experience with secure government environments

Knowledge of software engineering practices

Proficiency in Java, JavaScript, TypeScript, Python, or C++

Experience designing distributed systems

Cloud-native development experience

Understanding of DevSecOps practices

Job description

Join the Growth Story at Envitia

Envitia operates at the heart of the UK’s most sensitive and high-profile operations. Our approach is entirely mission-focused, enabling customers to see more, decide faster, and act with confidence across complex domains.

We deliver situational awareness and information advantage across C5ISR, fusing cyber, geospatial, and kinetic data into an operational picture. This transforms fragmented data into a shared understanding of the battlespace, delivering actionable insight when it matters most.

Our solutions are secure‑by‑design, built from the ground up to protect sensitive information and ensure resilience in contested environments. We simplify complex heterogeneous data sources into a rich picture of fused intelligence, providing a digital backbone that underpins success.

We operate as small teams delivering fast value, blending deep technical expertise with agile methods to deliver measurable outcomes. Every engagement focuses on capability, clarity, and confidence for those who protect the nation.

A career with Envitia enables you to work with mission driven innovation.

We’re thrilled to announce that Envitia has been named one of the Sunday Times Top 100 Medium‑Sized Companies to Work For in 2025—a prestigious recognition that highlights our commitment to creating an outstanding workplace where innovation, collaboration, and personal growth thrive.

The Role

As a Software Engineer, you will design, develop, integrate and maintain secure software services and mission‑critical applications within classified government environments.

Working across full‑stack and backend engineering, you will contribute to building modern, secure digital solutions across complex HMG technology estates. You’ll operate within multi‑disciplinary Agile teams, collaborating closely with DevOps engineers, test engineers, architects, data specialists and mission analysts to deliver high‑quality, production‑grade software.

This role is ideal for someone who enjoys working at pace in secure, technically challenging environments, with opportunities to contribute across API development, cloud‑native services and data integration.

Typical responsibilities include:

• Developing software services using languages such as Java, JavaScript, TypeScript, Python or C++
• Building full‑stack applications using frameworks such as React, Node.js, Spring Boot, Next.js or similar
• Designing and developing APIs, microservices and backend services for secure mission systems
• Integrating applications with cloud, data, analytics and streaming platforms
• Supporting the delivery of distributed software systems across secure and operational environments

Job Responsibilities

• Design, develop and maintain secure software applications, services, APIs and integrations within classified environments
• Build scalable, distributed systems supporting data, analytics and mission‑critical workloads
• Develop full‑stack features and backend services aligned to performance, reliability and security requirements
• Contribute to software design, architecture decisions and technical documentation
• Apply modern software engineering practices, including clean coding, testing and code reviews
• Collaborate within Agile teams, contributing to sprint planning, refinement, reviews and retrospectives
• Support DevSecOps delivery by working with CI/CD pipelines, containerised deployments and cloud‑native services
• Integrate applications with cloud platforms, data services and streaming technologies
• Implement monitoring, logging and observability to support live service operation
• Support secure deployment and operation of applications across development, test and production environments

Skills Required

• Experience working within the UK Security & Intelligence, defence or other secure government environments
• Strong knowledge of modern software engineering practices, frameworks and secure application development across HMG‑style technology estates
• Proficiency in one or more programming languages such as Java, JavaScript, TypeScript, Python or C++, with experience building APIs and full‑stack applications
• Experience designing and developing distributed systems, including microservices, event‑driven architectures and high‑performance backend services
• Experience with cloud‑native development, particularly AWS, containerised applications and modern infrastructure concepts
• Understanding of DevSecOps practices, including CI/CD pipelines, automated testing, code quality controls and secure development standards

Security Clearance Requirements

The successful candidate must hold a current high level security clearance.

Location

It is anticipated the role will require up to 80% (4d/wk) onsite working at client locations – Cheltenham, London, Manchester (based on project requirements).

What it's like to work at Envitia

At Envitia, we believe that our greatest asset is our talented and dedicated team. We are committed to fostering a work environment where every employee feels valued, supported, and motivated to excel. As part of this commitment, we offer a comprehensive range of benefits designed to enhance both your professional and personal well‑being.

• Annual Leave: 25 days plus your birthday off. You will have the ability to buy and sell 5 days holiday to work around your needs.
• Private Healthcare Coverage: Our health plan is tailored to meet the diverse needs of our employees with additional levels for family if required.
• Training & Skills Development: Stay ahead in your career with ongoing training opportunities and skill development initiatives tailored to your evolving needs.
• Fitness Reimbursement: We encourage an active lifestyle. Our fitness reimbursement program helps you stay fit by covering a portion of your gym memberships or fitness‑related expenses.
• Life Assurance: Gain peace of mind with extensive life insurance coverage that ensures financial protection for you and your loved ones.
• Pension Contribution: Plan for your future with our pension options. We provide resources and support to help you build a secure financial foundation.
• Perkbox Subscription: Enjoy exclusive discounts on a variety of products and services. From technology to entertainment, we've partnered with various businesses to bring you special perks.
• Internal Reward Schemes: Be rewarded for your exceptional contributions through our employee recognition initiatives that celebrate your achievements.
• Community Engagement & Volunteer Opportunities: Contribute to meaningful causes with company‑sponsored volunteer programs, fostering a sense of community and social responsibility.

Inclusion at Envitia

At Envitia, we celebrate diversity and are committed to creating an inclusive environment for all employees. We welcome applicants from all backgrounds and walks of life. We believe that our strength lies in our differences, and we are dedicated to fostering a workplace where everyone feels valued, respected, and empowered.

We encourage applications from people of all abilities, ages, genders, sexual orientations, races, ethnicities, and religions. We strive to support a culture of inclusion, accessibility, and work‑life balance.

If you require any accommodations during the application or interview process, please let us know.