Java jobs in United Kingdom

Ascendion is a full-service digital engineering solutions company.

We make and manage software platforms and products that power growth and deliver captivating experiences to consumers and employees.

Our engineering, cloud, data, experience design, and talent solution capabilities accelerate transformation and impact for enterprise clients.

Headquartered in New Jersey, our workforce of 6,000+ Ascenders delivers solutions from around the globe.

Ascendion is built differently to engineer the next.

Ascendion | Engineering to elevate life We have a culture built on opportunity, inclusion, and a spirit of partnership.

Come, change the world with us : Build the coolest tech for world's leading brands Solve complex problems – and learn new skills Experience the power of transforming digital engineering for Fortune 500 clients Master your craft with leading training programs and hands‑on experience Experience a community of change makers!

Join a culture of high‑performing innovators with endless ideas and a passion for tech.

Our culture is the fabric of our company, and it is what makes us unique and diverse.

The way we share ideas, learning, experiences, successes, and joy allows everyone to be their best at Ascendion.

Role: Software Engineer
Location: Brazil (Remote)
Employment Type: Contract

Key Responsibilities: Design, develop, and maintain APIs using Apigee (preferred), KrakenD, or AWS API Gateway. Implement scalable and secure API architectures using REST, gRPC, and GraphQL. Develop backend services using Java (Spring Boot) and frontend applications using JavaScript / TypeScript with React or Angular. Work with cloud environments such as AWS or GCP for deployment, scaling, and monitoring. Utilize CI / CD pipelines (ADO Pipelines), GitHub, Docker, and Kubernetes to manage code, build processes, and deployments. Write robust unit, integration, and automated tests using tools such as Cucumber and Mockito. Contribute to cross‑organization API standards, documentation, and best practices. Collaborate with Agile / Scrum teams to deliver high‑quality software solutions.

Required Skills & Experience: 5+ years of overall professional experience. Java (Spring Boot): API Development: API Management (Apigee / KrakenD / AWS Gateway): 3 years. Cloud Platforms (AWS / GCP). JavaScript / TypeScript: React / Angular. Strong understanding of API protocols and architectural patterns (REST, gRPC, GraphQL). Proficiency with CI / CD, GitHub, Docker, and Kubernetes. Experience writing automated tests (Cucumber, Mockito). Ability to write clear documentation and contribute to API governance efforts.