Senior Software Developer

Unify Talent UK; United Kingdom; Remote; GBP 80,000 - 100,000; Full time

Job summary

A respected consultancy in the UK is seeking a Senior / Lead Full Stack Developer for a fully remote contract role. The ideal candidate must have significant experience with Kotlin and TypeScript, and hold valid SC Clearance. This is an opportunity to contribute to high-profile government programs while adopting best engineering practices. The role offers a competitive daily rate and long-term potential over a 3-month rolling contract.

Qualifications

• Significant experience as a Senior/Lead Full Stack Developer.
• Proficiency with Kotlin and Spring Boot; TypeScript; Express.js.
• Strong collaboration skills in agile, multidisciplinary teams.

Responsibilities

• Collaborate on design and development of end-to-end software solutions.
• Lead development efforts across frontend and backend layers.
• Ensure integration with internal/external APIs and adherence to RESTful principles.

Skills

Kotlin

TypeScript

REST APIs

Docker

Kubernetes

Terraform

Tools

AWS

GitHub Actions

Spring Boot

Express.js

Job description

Overview

Senior / Lead Software Developer
Full Stack - Kotlin - TypeScript
£(Apply online only) per day, Outside IR35
3 Month rolling (long term)
Fully Remote
SC Clearance REQUIRED

Unify are proud to exclusively represent a highly respected Consultancy who urgently require the services of a Senior / Lead Full Stack Developer, on a contract basis, 3 months rolling, with long term scope. We require SC Clearance for this project therefore you MUST have valid SC Clearance! You'll get the opportunity to join a project team working on a high-profile, high-impact, Government program.

Tech Stack

• Frontend: Building UIs using Express.js and TypeScript; Using Gov department Design System and nunjucks; Integrating with the backend services
• Backend: Developing and maintaining Kotlin APIs (using Spring Boot); Integrating with internal and external APIs using REST or similar protocols; Experience with event driven architecture
• Cloud & infrastructure: Deploying and managing services in AWS (there is a managed platform team); Writing infrastructure as code using Terraform; Implementing and maintaining CI/CD pipelines with GitHub Actions (or equivalent); Using containerisation technologies, particularly Docker and Kubernetes
• Engineering practices: Strong focus on Test-Driven Development (TDD) and automated testing; Comfortable with pair programming, peer reviews, and knowledge sharing; Writing documented, maintainable code aligned with GDS standards; Experience working in agile, multidisciplinary teams and "working in the open"

Responsibilities

• Collaborate on design and development of end-to-end software solutions for a government program.
• Lead development efforts across frontend (TypeScript/Express.js) and backend (Kotlin/Spring Boot) layers.
• Ensure integration with internal/external APIs and adherence to RESTful principles and event-driven patterns.
• Deploy and manage services in AWS, implement infrastructure as code with Terraform, and maintain CI/CD pipelines.
• Adopt and promote engineering best practices, including TDD, automated testing, and code reviews.

Qualifications

• SC Clearance (required)
• Significant experience as a Senior/Lead Full Stack Developer
• Proficiency with Kotlin and Spring Boot; TypeScript; Express.js
• Experience with REST APIs, event-driven architectures, AWS, Terraform, Docker, Kubernetes
• Familiarity with GOV Design System and Nunjucks; knowledge of GDS standards
• Strong collaboration skills in agile, multidisciplinary teams; comfortable with pair programming and knowledge sharing

Engagement & Logistics

• Contract: 3 months rolling, long-term potential
• Location: Fully Remote
• Rate: £(Apply online only) per day, Outside IR35
• Application: Please apply by submitting your latest CV for immediate review by our talent team.