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

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 providers
• Clean architecture and modern .NET patterns

Experience pairing Next.js frontends with .NET backends is a plus.

Architectural Strength

Ability to design and explain system‑level architecture, trade‑offs, and long‑term implications. Experience building distributed, scalable systems is important.

Event‑Driven / Messaging Systems

Practical experience with event‑driven workflows using Azure Service Bus, RabbitMQ, or similar. Familiarity with asynchronous processing, retries, and distributed coordination.

Cosmos DB / NoSQL

Comfort designing document‑oriented data models, including partitioning, indexing, and performance tuning in Cosmos DB or equivalent NoSQL stores.

Next.js (App Router)

Hands‑on experience with modern Next.js features:

• App Router
• Server Components
• Server Actions
• Streaming UI patterns