C#.Net Fullstack engineer ( 50% front end and 50% backend)

Gracemark Solutions

📍 toronto, on, Canada

Full-time Other-General

Job Description

CANADA CANDIDATES ONLY

Duration: Long term contract

No. of Positions: 3

Key Areas: C#.Net, C# Backend, Azure, Next.JS, React.JS, Node.JS

We're looking for an engineer with hands‑on, production experience integrating LLM APIs (OpenAI, Azure OpenAI, Anthropic). You should be able to design end‑to‑end AI pipelines, including:

  • Streaming responses
  • Advanced prompt engineering
  • Output evaluation and hallucination mitigation
  • Human‑in‑the‑loop workflows
  • Document‑processing and retrieval‑augmented pipelines

Daily use of AI‑assisted development tools (Copilot, Claude Code, Cursor) is expected.

.NET Backend Development

Strong experience building backend services in .NET (C#) , including:

  • API and microservice design
  • Async processing and streaming endpoints
  • Integrating .NET services with LLM provider...
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