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Senior API Software Engineer

Senior API Software Engineer

On site

Belfast, United kingdom

Senior

Full Time

07-11-2025

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Skills

SQL Architecture Azure Accounting

Job Specifications

Senior Software Engineer - AI Automation Platform - Belfast/Hybrid

We're partnered with an AI Powered Fintech who are moving into the first stage of a large scale expansion over the next 6 months. They will have a number of different AI focused roles going live but to start we're focused on finding a number of Senior Software Engineers focusing on API architecture and design.

The team is currently focused on developing a platform designed to accelerate AI and generative AI initiatives across the organisation. This is the core team who are leading the build and implementation efforts.

Join a high-growth SaaS team building real AI automation — not chatbots. We’re talking end-to-end workflow intelligence: document ingestion → accounting → tax → filing — used by tens of thousands of businesses.
You’ll architect and own the API layer that powers product integrations, platform scalability, and smart AI features across multiple mission-critical systems.

What you’ll do:
- Design and build secure, scalable APIs in C#/.NET + Azure
- Shape API standards, gateway strategy, versioning & authentication
- Drive event-driven integrations and seamless third-party connectivity
- Lead API performance, reliability, and observability improvements
- Mentor engineers and influence architecture across multiple teams
What you bring:
- Deep C#/.NET experience in production systems
- Strong REST API design + OpenAPI/Swagger knowledge
- SQL expertise + cloud experience with Azure services
- Security-first engineering mindset (sensitive data handling)
- Ownership across the lifecycle — design → build → deploy → run

If this sounds like the next step in your career, send across your CV immediately or contact Adam Whitehurst at Trust in soda for more info.

About the Company

Community-led, diverse in behaviour, for the digital tech brave. We are Trust in SODA, the digital tech recruitment specialists. We empower and build diverse communities that represent the digital tech world we live in. We are proud to be officially B Corp certified, joining a global network of organisations dedicated to using their platform as a force for positive change. Our consultants focus on delivering talent solutions across Software Engineering, DevOps, Data, Cloud & Infrastructure and Creative. Our SODA Squad op... Know more