Senior Product Engineer C#/.NET & AI

Salary: £80,000 - 80,000 per year Requirements: • Strong commercial C#/.NET engineering experience • Modern .NET / ASP.NET Core / REST API development experience • Genuine full-stack capability with React, Angular, TypeScript, JavaScript, or similar • SQL experience and strong software engineering fundamentals • Cloud exposure across Azure and/or AWS • Hands-on exposure to LLMs or Generative AI • Ability to explain what we built, how the model was integrated, and the engineering decisions behind it Responsibilities: • Build and evolve commercial applications using C#, .NET, and modern web technologies • Design and integrate Generative AI/LLM functionality directly into our software products • Work with technologies such as OpenAI, Azure OpenAI, Claude, Gemini, or local models • Explore RAG, AI agents, Semantic Kernel, MCP, vector search, and intelligent workflows • Engineer production AI considerations including accuracy, security, validation, guardrails, latency, and cost • Work across the stack, including modern frontend technologies such as React, Angular, or TypeScript • Modernise established products while helping shape how AI changes their capabilities • Take ideas from experimentation through to production-ready customer functionality Technologies: • AI • AI Agents • API • ASP.NET • AWS • Angular • Azure • C# • Cloud • Frontend • JavaScript • LLM • MCP • RAG • REST • React • SQL • Security • TypeScript • Web • ChatGPT • Copilot More: We are an established global software business making a major investment into Applied AI and Generative AI across our product portfolio. This is a hybrid role based in Sheffield / Tankersley, with 3 days onsite and 2 days remote, and a salary of up to £80,000 depending on level and experience. We are hiring for Mid-Level and Senior Software Engineers who are strong product developers first and want to build AI directly into real-world software used by businesses internationally. This is a chance to join a substantial software organisation where AI is becoming a core part of our engineering and product strategy, and where you can make Applied AI a much bigger part of your career. last updated 33 week of 2026