Software Engineer - Security & Intelligence

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 C5

ISR, 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.

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 Dev Ops 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, Type Script, 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

• 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 Dev Sec Ops  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

• 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, Type Script, Python or C++, with experience building APIs and full‑stack applications
• Experience designing and developing distributed systems, including…