Java Developer – 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 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.

Envitia is recruiting for a Java Engineer to join our Security and Intelligence consulting team and will be responsible for designing, developing and maintaining secure software services and mission applications within classified government environments.

The role focuses on building high-performance backend systems, microservices and APIs that enable intelligence data platforms, analytics systems and operational applications.

The successful candidate will work within multi-disciplinary agile teams, collaborating with data engineers, data scientists, Dev Ops engineers and mission analysts to deliver secure, production‑grade software systems.

Typical engagements include:

• Developing Java‑based microservices and backend platforms
• Building API‑driven services enabling data exploitation and analytics
• Supporting distributed analytics platforms and intelligence applications
• Integrating software components across complex secure environments
• Delivering cloud‑native and containerised mission software systems

• Design, develop and maintain secure Java‑based backend services supporting mission‑critical and operational systems.
• Build scalable microservices architectures and robust RESTful APIs to support data‑driven and intelligence platforms.
• Engineer high‑performance, distributed applications capable of processing large volumes of data with low latency and high reliability.
• Integrate Java applications with data platforms, streaming services and analytics pipelines, including AI/ML‑enabled systems.
• Apply secure coding practices and ensure solutions meet stringent performance, reliability and security requirements.
• Contribute to architectural design, code reviews, automated testing and continuous improvement activities.
• Implement logging, monitoring and observability to support the operation of production systems.
• Collaborate closely with multi‑disciplinary teams including engineers, data specialists and operational stakeholders.

• Strong experience developing Java‑based backend applications (Java 11+) using modern frameworks such as Spring Boot / Spring Framework.
• Solid understanding of object‑oriented design, software architecture and building RESTful APIs.
• Experience designing and developing distributed systems and microservices architectures, including service‑to‑service communication and API integration patterns.
• Proven ability to build high‑performance, scalable backend systems for data‑intensive or mission‑critical applications.
• Experience working in Dev Sec Ops  environments, including Docker, Kubernetes, CI/CD pipelines, automated testing and observability tooling.
• Ability to work directly with stakeholders to understand requirements and translate them into robust, secure and scalable software…