Software Developer Jobs in United Kingdom

Software Developer role at KBR in Australia. Join Accelerator Project to design modern cloud‑deployed reference architecture for operational software systems.

Konrad is a next‑generation digital consultancy solving complex business problems for global clients with creative solutions. We hire smart, analytical, lifelong learners.

NICE Public Safety builds cloud‑native solutions for law enforcement, enabling agencies worldwide to manage growing digital evidence. As a Software Developer, you design, implement, and test UI, server, and API components in C# within multi‑threaded, multi‑server environments, ensuring security, scalability, and maintainability.

Software Developer role at Leidos UK, focused on ATM system support and software engineering. Candidate will design, implement, test, and document high‑quality software solutions in a fast‑changing environment, applying best practices and standards.

Software Developer at FCA’s Advanced Analytics & DSU, part of the Data, Technology and Innovation division. Develop advanced analytics applications to detect financial harm early and protect UK consumers.

Risk team at Squarepoint Capital builds and maintains the core risk platform handling position management, P/L computation, inventory and order routing. The Reliability Software Engineer develops observability, regression prevention and automation platforms, implements domain logic, provides L2 support on a rotating weekly schedule, and handles incident management and configuration tweaks.

Risk Technology at Squarepoint Capital builds and maintains the firm’s trading risk platform, handling trade capture, position management, P&L computation, and order routing. The role designs, develops, and optimizes high‑performance C++ services within a new service‑oriented architecture, collaborating with global teams to ensure resilience and low‑latency processing of large trading data streams.

Software Developer at Onefile Ltd, a Harris Computer company, building high‑quality web applications with .NET (C#) and Angular. The role focuses on clean code, performance, and AI‑assisted development tools to accelerate delivery.

Platform Services team at Pelion builds the Connectivity Management Platform that simplifies IoT device deployment at scale. As a Software Developer you will design, develop, and maintain high‑quality features for the platform, collaborate with UI/UX, Architecture, QA, SRE and Product teams, and integrate new mobile network operators.

Software Developer role at OMNIA® Training, a UK defence training alliance, based in Warminster, UK. The position is hybrid, working on cloud‑native, secure backend and frontend services for the British Army’s collective training system (ACTS). Responsibilities include building scalable services with Node.js, Python, Java, .NET Core, integrating APIs, databases, and third‑party services, containerising with Docker/Kubernetes, deploying to AWS, Azure, MODCloud (OCP), automating CI/CD pipelines (Jenkins, GitHub Actions, Tekton, Azure DevOps), implementing IaC (Terraform, CloudFormation), and ensuring code quality via SonarQube, Snyk, OWASP ZAP. The role requires 5+ years of full‑stack experience, proficiency in React/Angular, Docker/Kubernetes, cloud platforms, CI/CD, IaC, and RESTful APIs, plus SC clearance.

TransUnion's Job Applicant Privacy Notice What We'll Bring: We Are TransUnion: TransUnion is a major credit reference agency, and we offer specialist services in fraud, identity and risk management, automated decisioning and demographics. We support organisations across a variety of sectors including finance, retail, telecommunications, utilities, gaming, government and insurance.

i2 Group, a Harris Computer company, builds AI-first applications that empower law enforcement and national security analysts to uncover hidden patterns in massive datasets. The intern designs and develops AI-enabled software for desktop and web, collaborates on ML model integration, data pipelines, and cloud-native architectures, and participates in Agile practices to deliver secure, scalable services.

Software Developer role at OMNIA® Training in Warminster, Wiltshire. Join a mission-driven team transforming British Army training.

Software Developer role at Leidos UK & Europe focused on Air Traffic Management. The position is primarily on-site at Whiteley (near Portsmouth) with potential remote work after system understanding.

Software Developer role at TWI Ltd in Cambridge, UK. Hybrid work model with onsite days and remote UK option. Full‑stack developer needed with C#, .NET Core, React, Typescript, CSS, SQL, Git, and experience designing scalable software.

Airbus Defence and Space Limited is seeking a Software Developer to join its team in Portsmouth. The role involves designing, developing, testing, deploying, and maintaining high‑quality software for critical defence and space applications.

Software Developer role at Airbus Defence and Space Limited in Portsmouth. The position focuses on designing, developing, testing, deploying, and maintaining high‑quality software for critical defence and space applications.

KBR’s Modelling and Simulation team builds integrated simulation and test‑and‑evaluation environments, including digital twins, to support national security projects. As a Software Developer you will set up, integrate, and operate complex software systems, customize tools, and maintain the T&E environment while collaborating with a small, hands‑on team.

Capita Life & Pensions Regulated Services seeks a Senior Software Developer to design, test and implement Utopia V solutions for the Life & Pensions division. The role involves writing code, debugging, unit testing, and integrating third‑party trading systems while mentoring junior staff.

Software Developer role at DXC Technology in the UK. The position requires a creative and ambitious technology lead with at least 5 years of experience in modern programming languages (Bash, Python, Ruby, Perl, C, C++, Java, PowerShell). Candidates must possess strong knowledge of web security principles, RDBMS (SQL Server, Oracle), cloud platforms (AWS, Azure), and Agile development practices.