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Senior Java Developer

Lead / Senior Java Developer (Technical Lead) We are looking for an experienced Lead / Senior Java Developer to join a high-performing agile team building scalable, high-quality digital services. This is a hands-on…

Pay rate £600 – £650/day
Contract type Contract
Posted 22 June 2026

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About this contract

Lead / Senior Java Developer (Technical Lead)

We are looking for an experienced Lead / Senior Java Developer to join a high-performing agile team building scalable, high-quality digital services. This is a hands-on technical leadership role where you will guide developers while contributing directly to backend development, APIs, and automated testing.

You will work on complex, high-traffic systems using modern engineering practices, helping to design and deliver robust, scalable services that are resilient and production-ready.

Key Responsibilities

* Lead or mentor a team of Java developers

* Design and build server-side applications and RESTful APIs

* Develop and maintain automated test suites (TDD/BDD)

* Support CI/CD and continuous deployment practices

* Contribute to 2nd-line production support and incident resolution

* Build scalable, high-performance distributed systems

* Work with large datasets and ensure systems scale effectively

* Communicate technical concepts to non-technical stakeholders

* Work in Linux/Unix-based environments

Essential Experience

* Strong commercial experience with Java (11/17/21+)

* Experience leading or mentoring engineers

* Strong background in microservices architecture

* Experience building and consuming REST APIs

* Strong understanding of TDD, BDD, and automated testing

* Experience working in Agile environments

* Experience supporting live production systems

* Solid understanding of scalable web architecture

* Comfortable working in Linux/Unix environments

Desirable Experience

* Kafka, ActiveMQ, or similar messaging systems

* MongoDB or other NoSQL databases

* Mockito, Jackson, JAX-RS

* High-scale or high-traffic system experience

* Cloud platforms (AWS / Azure / GCP)

* CI/CD and DevOps tooling

About You

You are a strong technical leader who enjoys solving complex problems, improving systems, and working collaboratively in cross-functional agile teams. You value clean engineering practices, high-quality code, and delivering reliable systems at scale

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