Full Stack Developer at Modular Data, Remote, £Contract Rate (Outside IR35)

About Us

We are a technology solutions provider specialising in the public sector. Our mission is to help government organisations become truly data-driven by transforming their digital services, streamlining operational processes, improving citizen outcomes, and enhancing transparency across public services.

We work closely with government bodies to design and deliver modern, secure, and scalable digital solutions that have real-world impact.

The Role

We are looking to engage a Full Stack Developer on a contract basis to support the delivery of high-quality digital services within the UK public sector. You will play a key role in designing, building, and maintaining robust full-stack applications, working closely with multidisciplinary teams including product managers, designers, and other engineers.

This role requires a hands-on senior developer who is comfortable working across the full software development lifecycle and who understands the standards, security, and delivery expectations of government environments.

Key Responsibilities

• Design, develop, and maintain scalable full stack applications
• Build and integrate backend services using Java (Kotlin) and Node.js
• Develop modern, responsive front-end solutions using TypeScript
• Work with cloud-based infrastructure and services on AWS
• Design and manage relational databases, primarily PostgreSQL
• Contribute to architectural decisions and technical best practices
• Ensure solutions meet government standards for security, accessibility, and performance Collaborate effectively with cross-functional teams in an agile delivery environment
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Essential Skills & Experience

The following technical experience is essential for this role:

• Java (Kotlin)
• AWS (cloud-native development and deployment)
• Node.js
• PostgreSQL
• TypeScript

Please do not apply if you do not have hands-on experience across this full tech stack.

Additional Requirements

• Proven UK government / public sector experience (essential)
• Must qualify for UK Security Clearance (SC) (essential)
• Senior-level experience working as a Software Developer (or equivalent title)
• Strong understanding of modern software engineering practices
• Ability to work independently in a remote environment

What We Offer

• Outside IR35 contract
• Fully remote working (UK-based)
• Opportunity to work on meaningful public sector digital services
• Start ASAP (subject to onboarding process)