Full-Stack AI Engineer (.NET + React)

We Make MVP is seeking a Full-Stack AI Engineer with .NET and React expertise to expand an existing AI CFO product. You will build new features, improve AI Agent performance, and develop advanced agents for an MVP already in active use.

• Design and implement new features on top of an existing AI CFO system
• Build advanced file export and reporting functionality (PDF, Excel, structured reports)
• Improve accuracy, consistency, and performance of LLM outputs
• Maintain and optimize generating charts and graphs using LLMs
• Create evaluation pipelines to measure and optimize model performance
• Implement validation layers and deterministic post-processing

Core Requirements:

• Full-Stack Engineering: React (or similar frontend framework) and .NET Backend development experience
• Working with AWS (or similar cloud environments)
• Knowledge of relational and document databases
• Proven experience integrating LLMs into real applications
• Experience with MCP and understanding how it works
• Structured output generation (JSON, reports, analytics)
• Prompt engineering and workflow optimization
• Building evaluation frameworks and test suites for AI systems
• Experience with frontier LLM models
• Handling retries, validation, guardrails, and fallback logic
• Optimizing cost, latency, and accuracy trade-offs
• Use AI-assisted coding tools (Claude Code)

Strong Plus:

• Financial analytics or accounting-related software experience
• Familiarity with QuickBooks or similar financial systems

• Part-time contract (~120 hours per month)
• Fully remote
• Flexible schedule
• Long-term collaboration
• Complete freedom in choosing technologies and architectural solutions