IT & Software

Fullstack Java Developer

Square One Resources

Leeds · England · United Kingdom

Salary: £40,000 - 70,000 per year


Requirements:



  • Strong backend engineering experience; Java is preferred, but we welcome engineers with strong experience in comparable object-oriented languages.

  • Experience delivering solutions that span backend and frontend technologies, with a solid understanding of how systems fit together end to end.

  • Demonstrated technical leadership through influencing engineering decisions, driving initiatives, and supporting the success of others.

  • A strong quality-first mindset, including experience with automated testing, code reviews, and maintainable software design.

  • Strong problem-solving, communication, and collaboration skills.

  • Openness to adopting modern engineering practices, including AI-assisted development and spec-driven approaches.


Responsibilities:



  • Design, build, test, and deliver features across the stack, with a strong emphasis on backend services and APIs.

  • Contribute to architectural decisions and technical strategy, helping shape the long-term direction of our products and platforms.

  • Leverage AI-assisted development tools and spec-driven engineering practices to improve productivity, code quality, and delivery effectiveness.

  • Champion engineering excellence through automated testing, code reviews, observability, maintainability, and continuous improvement.

  • Collaborate closely with product managers, designers, QA engineers, and fellow developers to solve complex customer problems.

  • Support and mentor other engineers through knowledge sharing, technical guidance, and constructive feedback.

  • Participate in the continuous improvement of engineering processes, tooling, and delivery practices.


Technologies:



  • AI

  • Backend

  • Frontend

  • Support

  • Java

  • Fullstack


More:


We have an exciting opportunity with one of our enterprise data analytics clients for an initial 2 month contract, with a likelihood of extension and conversion to permanent. The role is based in Leeds and requires onsite work every Tuesday and Thursday. The salary/rate is up to £600 daily inside IR35, and the start date is within the next two weeks. We are looking for a Software Engineer to help design, build, and evolve products from concept to production, working closely with product, design, and QA to deliver high-quality solutions that solve real user problems.


last updated 37 week of 2026

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Reference: WJ-766_21943784

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