Multiple C# Developers Intermediate to Senior

Multiple Intermediate-Senior Developers(C# / .NET) — NEW US FDI, BELFAST A US-headquartered software company is opening its doors in Belfast for the first time, and this is one of up to 10 roles it's hiring across the 3 to 8 year experience range as it builds out its Northern Ireland engineering base. This particular role is for a backend-leaning product engineer who wants to own features end to end, not just work a ticket queue, and who uses AI coding tools as a genuine daily habit rather than an occasional shortcut. The company builds an AI-powered automation platform used by businesses to streamline complex operational workflows. It's product-led, well-established in its home market, and this Belfast base marks the start of its engineering presence in the region. The team here will be small and deliberately so: what each person builds actually matters, and decisions stick. The role This is a backend-leaning product engineering role. You'll work in a small product duo alongside a designer, taking features from high-fidelity prototypes through to production. The split is roughly 80% backend and 20% product judgement, and you own the technical side of that end to end. Why it's worth a look Real ownership: you design the backend architecture, plan the implementation, ship the feature, monitor it in production, and iterate. Nobody hands you a task list.AI tooling is a genuine first-class part of how the team works, not a policy statement.Starting out remote, with a move to hybrid working expected as the Belfast base grows. What you'll be doing Taking product features from prototype and design through to production: technical planning, backend architecture, APIs, data models, implementation, testing, release and monitoring.Building backend services, APIs, workflows, background jobs and integrations in C# / .NET, with attention to observability, security and maintainability.Working across event-driven and distributed service patterns, handling retries, idempotency, ordering and eventual consistency.Implementing frontend changes when needed to ship a complete feature, using the existing design system rather than creating new patterns.Using AI coding tools daily to move faster on implementation, debugging, refactoring and testing, while staying fully accountable for correctness, security and quality. What they're looking for Must have: Commercial experience building and shipping backend-heavy product features.Strong C# / .NET backend experience, with solid understanding of data modelling, API design and distributed service architectures.Experience working with event-driven systems, queues or distributed workflows.Comfortable working across the frontend when needed to ship complete product flows.Practical daily use of AI coding tools such as Copilot, Cursor, Codex or similar, with a clear sense of when to trust the output and when to take manual control. Nice to have: Solid modern frontend framework experience beyond occasional use.Experience with workflow orchestration, background job processing, event sourcing or projections.Familiarity with cloud-native services including message queuing, NoSQL databases and serverless compute.Experience with structured logging, distributed tracing or observability tooling.Startup or fast-moving product engineering background. This is one of several roles opening as part of this company's first Belfast hire. If this sounds like the kind of role you've been looking for, get in touch with Daryl Crothers at Oxbow Talent to find out more.