Java Developer

Salary: £58,000 - 98,000 per year

Requirements:

• Experience with Java or a similar language, with a proactive, problem-solving approach and a track record of taking ownership.
• Demonstrable experience with clean code principles, contract-first design, and writing well-tested, maintainable software.
• Ability to design and build services with monitoring, observability, and reliability in mind.
• Experience leading or contributing to technical discussions within a multi-functional team and influencing architectural decisions.
• A proactive approach to identifying and addressing technical debt, performance issues, and system improvements.
• A focus on quality and consistency in the solutions you deliver.
• Desirable experience with modern Spring or Spring Boot, Kubernetes, Docker, and DevOps tools such as Terraform, Jenkins, and GitHub Actions.
• Exposure to GraphQL.
• Experience with incident management, production support, and mentoring other engineers.

Responsibilities:

• Build and enhance features on our ad server platform to support direct and programmatic campaign lifecycle management, from booking to fulfilment, tracking, and reporting.
• Own features end-to-end, from design through to production release, ensuring quality and timely delivery.
• Work closely with developers and product owners to understand requirements, shape solutions, and influence architectural decisions.
• Lead and contribute to technical discussions to ensure smooth integration across services.
• Champion clean code principles, contract-first design, and well-tested software.
• Lead by example in code reviews, providing constructive feedback and mentoring others on best practices.
• Identify technical debt, performance bottlenecks, and opportunities to improve reliability and developer experience.
• Propose and implement changes to enhance the platform and tooling.
• Help ensure a stable production environment by monitoring system health, supporting incident resolution, and contributing to preventative measures and improvements.

Technologies:

• AWS
• CI/CD
• DAX
• DevOps
• Docker
• GitHub
• GraphQL
• Incident Management
• Support
• Java
• Jenkins
• Kubernetes
• Spring
• Spring Boot
• Terraform
• microservices
• Cloud
• Grafana
• Prometheus

More:

We are part of the DAX engineering team, building and improving our ad server platform with modern Java microservices, Kubernetes on AWS, CI/CD pipelines, and observability tooling in a collaborative, agile environment. This role offers the opportunity to work on complex, high-scale systems, take real ownership of technical initiatives, and collaborate with a skilled, supportive team in an open and inclusive setting. The position is full time and based in Holborn, London.

last updated 34 week of 2026