Senior Software Developer(Kotlin/Java)

Senior Software Developer(Kotlin/Java)

• Contract Type: Initial 3-Month Contract
• Start Date: ASAP
• Day Rate: Up to £500 per day (Inside IR35)
• Security Clearance: Active SC Clearance preferred, or eligibility to obtain SC Clearance
• Location: Primarily remote with occasional onsite attendance (maximum once per month). Site locations may vary and could include London, Leeds, or Sheffield.

Role Overview

We are seeking a highly experienced Senior Software Developer with strong back-end engineering expertise in Kotlin, Java, and Spring Boot. The successful candidate will join a collaborative Agile team, contributing to the development of high-quality software solutions within a government-focused environment.

This is an excellent opportunity for a developer who enjoys working closely with colleagues, sharing best practices, influencing technical direction, and delivering robust, scalable applications.

Key Responsibilities

• Design, develop, and maintain scalable back-end services using Kotlin, Java, and Spring Boot.
• Collaborate closely with developers, architects, product teams, and stakeholders.
• Champion engineering best practices, including Test-Driven Development (TDD).
• Contribute to technical discussions, solution design, and continuous improvement initiatives.
• Support the delivery of high-quality software within Agile delivery teams.
• Participate in code reviews and knowledge-sharing activities.

Essential Skills & Experience

• Extensive experience as a Back-End Software Engineer or Developer.
• Strong commercial experience with:
• Kotlin
• Java
• Spring Boot
• Proven expertise in Test-Driven Development (TDD), with the ability to demonstrate this during a pairing exercise at interview stage.
• Strong understanding of software engineering best practices and modern development methodologies.
• Collaborative mindset with excellent communication and teamwork skills.
• Experience working within government or public sector environments.

Desirable Experience

• Experience working on secure, large-scale digital services.
• Familiarity with Agile delivery practices and DevOps principles.
• Previous experience working within teams requiring Security Clearance.

Deliverables

• Support delivery of project objectives during the initial 3-month Statement of Work.
• Produce high-quality, maintainable, and well-tested code.
• Contribute positively to team performance and technical excellence.