Kotlin/Java Developer at 83zero Ltd, Sheffield, £275 to £300 per Day

Kotlin / Java Developer (Contract) - Outside IR35
📍 Sheffield (Grosvenor House) | Hybrid (2 days onsite)
💼 Full-time Contract
💰 £300 per day (Outside IR35)

We're seeking a proactive and skilled Kotlin / Java Developer to join a cutting-edge Developer Experience (DevX) Standards & Controls team within a global technology environment.

You'll be working on modern, microservices-based applications and APIs that help development teams manage and demonstrate compliance across software delivery. With multiple applications and PoCs in play, this role offers variety, ownership, and the chance to work with modern engineering practices.

• Collaborate with developers, testers, and stakeholders to build and run high-quality products
• Design, develop, and implement backend features aligned to business priorities
• Contribute to lightweight front-end components using a simple UI framework
• Build and maintain APIs and microservices
• Work directly with customers to resolve issues and respond to feature requests
• Participate in agile CI/CD delivery with rapid, iterative releases
• Engage in peer reviews and contribute to automated testing practices
• Play an active role in a collaborative, high-performing engineering team

Essential Skills:

• Strong experience in Kotlin, or Java with a willingness to learn Kotlin
• Experience in API development, SQL/databases, and/or HTML/JavaScript
• Strong coding standards with excellent attention to detail
• Proactive mindset with the ability to self-drive and unblock issues
• Experience using tools such as GitHub/Bitbucket, Jira, and Confluence