Kotlin Developer

GCS; Sheffield; Hybrid; GBP 45,000 - 65,000; Full time

Job summary

GCS in Sheffield is seeking a Kotlin Developer to join the DevX Standards & Controls team, focusing on building and improving platforms for engineering governance. You'll work with Kotlin, Java, APIs, and microservices in a cloud-ready architecture.

Collaborate with developers, testers, product owners, and stakeholders; contribute to backend platforms with occasional frontend work; participate in Agile ceremonies and drive rapid, high-quality software delivery.

Qualifications

• Kotlin experience or strong Java background with willingness to learn Kotlin.
• Experience in API Development, SQL & Databases, HTML/JavaScript, or microservices design.
• Excellent problem-solving and troubleshooting skills.
• Experience in Agile environments.
• Familiarity with Jira, Confluence, GitHub, or Bitbucket.
• Strong communication and proactive, ownership mindset.
• Attention to detail and code quality.

Responsibilities

• Design, develop, and maintain Kotlin and Java-based applications and APIs.
• Build and enhance microservices within a modern cloud-ready architecture.
• Collaborate closely with developers, testers, product owners, and stakeholders.
• Deliver backend functionality, with occasional front-end contributions.
• Work directly with users and customers to resolve issues and implement feature requests.
• Participate in Agile ceremonies and contribute to sprint planning and delivery.
• Perform code reviews and support automated testing initiatives.
• Contribute to a CI/CD culture focused on rapid, high-quality software delivery.

Skills

Kotlin

Java

Tools

Jira

Confluence

GitHub

Bitbucket

Job description

Kotlin Developer (Contract)

Sheffield, UK (Hybrid - 2 Days Onsite per Week)

Contract | Full-Time

About the Role

We are looking for a talented Kotlin Developer to join a dynamic Developer Experience (DevX) Standards & Controls team. You'll play a key role in building and enhancing platforms that enable engineering teams and control owners to manage and monitor compliance with software development standards and controls.

This is an excellent opportunity to work on modern, enterprise-scale applications built using Kotlin, Java, APIs, and Microservices, while contributing to innovative proof-of-concept solutions and business-critical platforms.

What You'll Be Doing

• Design, develop, and maintain Kotlin and Java-based applications and APIs.
• Build and enhance microservices within a modern cloud-ready architecture.
• Collaborate closely with developers, testers, product owners, and stakeholders.
• Deliver high-quality backend functionality, with occasional front-end contributions.
• Work directly with users and customers to resolve issues and implement feature requests.
• Participate in Agile ceremonies and contribute to sprint planning and delivery.
• Perform code reviews and support automated testing initiatives.
• Contribute to a CI/CD culture focused on rapid, high-quality software delivery.

Skills & Experience Required

• Strong experience with Kotlin, or significant Java development experience with a desire to learn Kotlin.

Experience in at least two of the following:

• API Development
• SQL & Database Technologies
• HTML / JavaScript
• Strong background designing and developing microservices.

• Excellent problem-solving and troubleshooting skills.
• Experience working within Agile environments.
• Familiarity with Jira, Confluence, GitHub, or Bitbucket.
• Strong communication skills, both written and verbal.
• Self-motivated, proactive approach with the ability to take ownership of tasks.
• High attention to detail and commitment to code quality.

Nice to Have

Experience working with cloud platforms such as:

• AWS
• Microsoft Azure
• Google Cloud Platform (GCP)

Project Overview

You'll be joining a team responsible for delivering multiple Kotlin and Java-based applications and proof-of-concepts that support software development governance and compliance. The solutions leverage modern engineering practices, scalable microservice architectures, and collaborative delivery methodologies.

Why Join?

• Work on cutting-edge technologies and enterprise-scale applications.
• Gain exposure to modern software engineering and DevOps practices.
• Access internal training, workshops, and technical learning opportunities.
• Collaborate with highly skilled engineering teams and industry experts.
• Opportunity to make a tangible impact on products used across a large organisation.