Description
Ensure all your application information is up to date and in order before applying for this opportunity.
Role: Senior Java Engineer (Contract)
Location: London, UK (On-site presence required)
Duration: 3-6 Months
The Project
Our Client are undertaking a critical digital transformation project to migrate their business banking customers from a legacy retail product to their modern commercial platform.
The Role
We are seeking two highly skilled Senior Java Engineers to join our team for an initial 3-6 month contract. You will be instrumental in enhancing our backend capabilities and improving the velocity of our development teams. A key focus of this role will be to help us transition from traditional development practices to a more automated, \"spec-based development\" approach using agentic AI for code generation.
Your primary responsibility will be to lay a solid foundation for our new microservices architecture, creating patterns and frameworks that our junior developers can follow. This is a hands-on role that also requires a strategic mindset to help us refactor our existing codebase to make it compatible with AI-driven development tools.
Key Responsibilities
* Develop and enhance backend microservices using Java and Spring Boot.
* Work on a project migrating business banking customers to a new commercial platform.
* Champion the adoption of agentic AI and spec-based development to accelerate our software delivery lifecycle.
* Refactor existing Java applications to make them suitable for AI-powered code generation and improvement.
* Mentor and guide a team of junior developers, providing clear frameworks and patterns for them to follow.
* Design and build robust backend-for-frontend (BFF) services to support our web and mobile applications.
* Collaborate with cross-functional teams to define, design, and ship new features.
Skills and Experience
* Expert-level knowledge of Java (version 21) and the Spring Boot framework (version 3.6+).
* Proven Experience designing, building, and maintaining complex distributed systems and microservices architectures.
* Strong hands-on Experience with cloud platforms, specifically AWS, and containerization technologies like Kubernetes (EKS).
* A solid understanding of the full development lifecycle, including packaging (Maven), testing (JUnit, Mockito, Cucumber), and deployment (Argo CD).
* Familiarity with agentic AI, code generation tools, or a strong personal interest and side projects in this area.
* Experience in the financial services industry, particularly with systems related to debit/credit cards, is highly desirable.
Skills
- Java
- springbooth
- AI
- aws
Help lay the foundations for \"spec-based development\" and agentic AI development
Job Title: Senior Java Engineer
Location: London, UK
Job Type: Contract
Trading as TEKsystems. Allegis Group Limited, Maxis 2, Western Road, Bracknell, RG12 1RT, United Kingdom. No. 2876353. Allegis Group Limited operates as an Employment Business and Employment Agency as set out in the Conduct of Employment Agencies and Employment Businesses Regulations 2003. TEKsystems is a company within the Allegis Group network of companies (collectively referred to as \"Allegis Group\"). Aerotek, Aston Carter, EASi, Talentis Solutions, TEKsystems, Stamford Consultants and The Stamford Group are Allegis Group brands. If you apply, your personal data will be processed as described in the Allegis Group Online Privacy Notice available at
To access our Online Privacy Notice, which explains what information we may collect, use, share, and store about you, and describes your rights and choices about this, please go to
We are part of a global network of companies and as a result, the personal data you provide will be shared within Allegis Group and transferred and processed outside the UK, Switzerland and European Economic Area subject to the protections described in the Allegis Group Online Privacy Notice. We store personal data in the UK, EEA, Switzerland and the USA. If you would like to exercise your privacy rights, please visit the \"Contacting Us\" section of our Online Privacy Notice at for details on how to contact us. To protect your privacy and security, we may take steps to verify your identity, such as a password and user ID if there is an account associated with your request, or identifying information such as your address or date of birth, before proceeding with your request. If you are resident in the UK, EEA or Switzerland, we will process any access request you make in accordance with our commitments under the UK Data Protection Act, EU-U.S. Privacy Shield or the Swiss-U. xiskglj S. Privacy Shield.
Senior Java Engineer in Luton employer: Teksystems
As an Azure Solution Architect with us, you'll thrive in a dynamic work culture that prioritises innovation and collaboration. We offer competitive benefits, including professional development opportunities to enhance your skills in cloud technologies, all while working in a vibrant location that fosters creativity and teamwork. Join us to be part of a forward-thinking company that values your contributions and supports your career growth.
