Fullstack Java Developer
Square One Resources
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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