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Software Engineer

Opus Recruitment Solutions LtdUK, UK🇬🇧United KingdomPosted 17 Sept 2026

Quick Overview

Seniority
Mid Senior
Employment type
Temporary/Casual
Work mode
Hybrid
Location
UK, UK, United Kingdom
Posted
18 hours ago
API GatewayAWSAgileJavaREST

Job Description

For one of our leading public sector clients, we are searching for experienced freelance Software Engineers (SC Cleared) to support a major digital transformation programme within the UK Government. You'll join a newly formed team responsible for building and delivering a critical service that enables the secure exchange of tax information. This is a hands-on full stack engineering role focused on AWS-based development, API integration and production delivery.

Role Responsibilities:

  • Design, develop and deploy secure, scalable cloud-native applications using AWS services
  • Build and enhance services that enable the exchange of tax information between systems
  • Develop backend services, APIs and integrations using Java and AWS technologies
  • Contribute across the full software development lifecycle from design through to production deployment
  • Work closely with Test Engineers to ensure high levels of quality, automation and service reliability
  • Collaborate with platform, connectivity and legacy system teams to deliver integrated solutions
  • Work within agile, multidisciplinary teams delivering services into Beta and Live environments

Requirements

  • Proven experience as a Software Engineer, Full Stack Developer or Software Developer within complex technology environments
  • Strong AWS development experience across cloud-native architectures and services
  • Commercial experience developing applications using Java
  • Experience designing, building and integrating REST APIs and API Gateway solutions
  • Front-end development experience using HTML5 and modern web technologies
  • Strong understanding of software testing, automation and quality engineering principles
  • Experience working within Agile delivery teams and modern engineering practices
  • Experience delivering secure, high-availability production services
  • Previous public sector, government or highly regulated industry experience is desirable

Role Details

  • Location: Leeds, Manchester or Newcastle (supplier offices can be utilised)
  • Working Pattern: Hybrid working with 60% office attendance expected
  • Delivery Phase: Beta/Live
  • Clearance: Active SC Clearance
  • Contract: Freelance / Contract
  • SFIA Level: SFIA 4

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