Java Developer

Addition Solutions LTD • cheltenham, england • Posted May 23, 2026

Position Overview

Overview

Specialist UK consultancy working at the heart of national security and intelligence programmes is seeking a Java Developer to build secure, high-performance backend systems. This role focuses on delivering mission-critical applications that support advanced data, analytics, and operational platforms in highly secure environments.

Role Overview: Location: Gloucester, London or Manchester (up to 80% onsite). Package: Competitive salary + benefits. Industry: National Security / Software Engineering.

Responsibilities

  • Designing and developing secure Java-based backend services for mission-critical systems.
  • Building scalable microservices and RESTful APIs to support intelligence and data platforms.
  • Developing high-performance distributed applications capable of handling large, complex datasets.
  • Integrating backend systems with streaming, analytics, and AI/ML-enabled platforms.
  • App...