Senior Fullstack Java Developer

Avanti Recruitment is recruiting for a Senior Java Full Stack Developer to join an established, international software company based in Central London.

The company develops complex, business-critical enterprise software used by major organisations internationally. Its products support high-volume transactions and essential business operations, giving engineers the opportunity to work on technically challenging, large-scale applications.

This is a hands-on development position with a strong emphasis on Java, Spring Boot, REST APIs and microservices, alongside commercial frontend development using Angular, React or Vue.

The company is continuing to modernise its established software platforms, creating an opportunity to work with modern technologies while improving and extending existing enterprise applications.

The position would suit an experienced Java developer who enjoys solving complex technical problems, wants to remain hands-on rather than move into management, and is comfortable working across both backend and frontend development.

Strong mid-level developers ready to step into a senior position will also be considered.

The Role

You will be responsible for designing, developing and enhancing the company's core software products, working closely with developers, architects and project managers to deliver robust, scalable and maintainable solutions.

Responsibilities will include:

• Designing and developing Java and Spring Boot applications.
• Developing RESTful APIs and microservices.
• Building and enhancing frontend functionality.
• Working with relational databases and SQL.
• Contributing to technical architecture and design discussions.
• Modernising existing applications and improving performance, scalability and maintainability.
• Troubleshooting complex technical problems, conducting code reviews and supporting testing and releases.
• Collaborating with an established international engineering team.

Essential Skills & Experience

• Strong commercial development experience with Java and Spring Boot.
• Hands-on experience designing and developing RESTful APIs and microservices.
• Genuine commercial frontend development experience using Angular, React or Vue.js.
• Good understanding of relational databases, including writing and troubleshooting SQL queries.
• Strong understanding of object-oriented programming, software engineering principles and design patterns.
• Experience developing and maintaining complex enterprise applications.
• Familiarity with Git, testing, debugging and modern software development practices.