Kotlin or Java Developer Full Time

Role: Kotlin or Java Developer

Type: Contract (inside IR35)

Location: Sheffield, UK

Required Skills & Experience

• Strong experience in Kotlin or Java with the ability and willingness to work across both where required
• Experience developing REST APIs and working with frameworks such as Spring
• Solid understanding of microservice-based, API-driven architectures
• Experience with AWS or other cloud platforms
• Strong analytical, problem-solving, and troubleshooting skills
• Experience working in Agile environments
• Understanding of DevOps practices and CI/CD pipelines

Optional / Nice to Have

• Experience with test automation
• Familiarity with Jenkins pipelines
• Exposure to event-driven architectures

Key Responsibilities

• Collaborate with developers, product owners, and stakeholders to design and deliver robust backend services
• Design, develop, and maintain performant and scalable APIs and microservices
• Contribute to architectural discussions and provide input on technology choices and best practices
• Write clean, well-tested, and maintainable code following agreed coding standards
• Build APIs and microservices that support multiple consuming applications
• Work closely with the engineering team to continuously improve development processes
• Participate in peer reviews and contribute to knowledge-sharing initiatives

Skills & Experience Summary

• Expertise in Kotlin or Java (with flexibility to work across both)
• Strong experience with REST APIs and microservices architectures
• Experience working with AWS, including the use of cloud-native services
• Solid understanding of microservices design patterns
• Experience working in Agile delivery teams
• Good communication skills and the ability to collaborate effectively across teams