Stelfox is partnering with a Fintech provider located in Cork City who are going through a product & platform modernisation process as they truly embrace the power of AI-assisted development to help extend AI capability on top of their existing product line for their enterprise customers.
You will feel comfortable around legacy .Net platforms and have lived through a migration or platform modernisation initiative by building a parallel solution alongside an existing live system running in production.
Topics that you are use to:
- .Net Internals - how thread pool and async/await interact
- SQL Server - performance optimisation, running profiler, indexing, partitioning, utilising Azure SQL elastic pool and look maybe look at moving logic into the APIs.
- Working inside the IDE and pushing code to production daily and utilising AI code assistants or agent platforms to your advantage (Cursor, Claude code etc).
Experience & Skills requirement:
- Expert-level experience with .NET / C#, deep understanding of frameworks, modern patterns (async/await, dependency injection, clean architecture, domain modeling).
- Strong full-stack development experience, including TypeScript/Angular
- Cloud-native development on Azure (AWS/GCP are transferable)
- Database design, optimization, and migration strategies for high-volume systems
- CI/CD pipelines and automated deployment practices
- Designing scalable APIs and managing versioning and backward compatibility
- Experience implementing testing strategies across unit, integration, and end-to-end testing layers
- Large-scale refactoring and modernization approaches such as incremental decomposition or strangler patterns
Please note, this position is located in Cork with 3 days in office, 2 remote from home, so candidates will need to be either located in or near Cork or be willing to relocate for this opportunity.