Full Stack .NET Engineer

Job Title: Full Stack .NET Engineer

Location: Belfast, Northern Ireland

Work Arrangement: Hybrid

We are seeking  full-stack engineers who can quickly understand our existing codebase and significantly contribute to the development of complex, innovative solutions in our fast-paced fintech environment. As a key member of ourengineeringteam, you will take ownership of significant features, driving them from conception to deployment. We need a versatile 'Swiss Army Knife'—a engineer who is comfortable across the entire SDLC, from architectural design and implementation to testing and deployment.

Your experience andexpertisewill be vital in delivering high-quality, robust solutions. Join our growing team and make a substantial impact on our platform!

We are an AI-enabled engineering team, and we believe the future is about empowering engineers with the latest tools,building through custom skills, agents, and harnesses, and we are looking for people who embrace AI, are excited about the future, and want to help shape the way we embed AI tooling throughout our developer experience.

• Design & build future-proof solutions to support growing business needs while thoroughly considering the system impact
• Work closely with our senior engineers to develop solutions from idea to implementation by estimating, planning,tracking and managing progress, risks, and dependencies.
• Gather and refine requirements, and release software ina timely fashion
• Be adaptive and strike a good balance between speed and efficiency
• Work with our technical support team to identify, reproduce, and remediate bug tickets
• Build and deliver features through agentic tooling — designing, iterating on, and improving our custom skills, agents, and harnesses as part of the work
• Contribute prompts, skills, and workflow improvements back to the team so our AI-enabled developer experience compounds
• Perform other duties required by Management

• BSc or MSc in Computer Science / related qualification OR commercial experience of developing in C#,Javaor other OO programming languages
• Minimum 2years of hands-on commercial experience programming on the .NET platform using C#, including ASP.NET (MVC)
• Experience with Design Patterns, refactoring, OODesignand related areas
• Practical hands-on experience with AIcoding assistants and agentic engineering workflows, and a genuine appetite to work primarily through agents — owning architecture, review, and quality rather than typing every line
• Exposure to building web services using Web API
• An understanding of database design and development
• Hands-on experience with HTML, JavaScript, CSS including jQuery
• Strong attention to detail and work ethic
• Strong analytical and problem-solving skills
• Excellent communication (both written and verbal) and interpersonal skills
• Experience of cloud technologies such as Azure/AWS/GCP
• Previous experience working with source control tools (TFS, SVN, or GIT)
• Legal right to work in the UK

• Experience with Azure Functions and Queues
• Experience building custom agent skills, harnesses, MCP servers, or prompt libraries
• Experience defining evals, guardrails, or review practices for AI-generated code
• Experience in testing methodologies
• Experience of LEAN software development practices
• Knowledge of CI/CD systems and implementation practices
• Hands-on experience with front-end frameworks such as Bootstrap
• Knowledge on .NET Core and Entity framework Code First migrations
• Proficient with Claude or Claude Code
• Experience in Financial services industry

• Private health insurance
• Group life death benefit
• Auto-enrollment pension with employer contributions matched to 5%
• 25 days holiday per year
• 10 statutory/bank holidays per year
• Opportuniti…