Junior / Mid-Level Full Stack Developer

About this role

Company Description

Come join us and make a difference in the world!

Discover more at www.necsws.com

Job Description

Please note that for this role you must be eligible for security clearance, so must have been a resident in the UK for a minimum of 5 years.

We are seeking a developer who wants to grow as part of an experienced engineering team, building secure, reliable and meaningful software used across complex public-sector and operational environments.

This role suits someone with a solid technical foundation, a hunger to learn, and a genuine interest in both front-end and back-end development. You do not need to be an expert in every area. What matters is that you enjoy building software, solving problems, communicating clearly, and improving through practical delivery.

You will work across back-end and front-end development, contributing to Java or Kotlin services, Spring Boot applications, REST APIs, integrations, databases, user interfaces, and platform improvements. You will be supported by senior engineers, trusted to take ownership of assigned work, test your changes, and contribute to shared engineering best practices.

This is a strong opportunity to gain practical experience across back-end services, front-end development, cloud-based delivery, and agile engineering practices, while building your confidence and technical ownership over time.

What you will do

• Build and maintain software features using Java or Kotlin, Spring Boot and modern web technologies, including RESTful APIs that support internal systems and integrations.
• Contribute to front-end development where needed, working with technologies such as HTML, CSS, JavaScript, TypeScript, React, Angular or AngularJS.
• Write clean, readable and maintainable code, working with relational and NoSQL databases to query, structure and manage data effectively.
• Support quality through unit, integration and functional testing, code reviews and defect resolution, with support...