Junior/Mid-Level Software Engineer (C# / React)

Quick Facts

• Role: Junior/Mid-Level Software Engineer (C# / React)
• Domain: AI SaaS platform with LLM, agents, RAG, and enterprise search
• Stack: C#/.NET backend, React/TypeScript frontend, Azure infrastructure

Description

You’ll build new features across an AI platform—from database and backend through API to the user interface. The backend is in C# and .NET, the frontend in React and TypeScript, and infrastructure runs on Azure. You’ll work with LLM-based agents, RAG, search over millions of documents, and integrations via API and MCP.

Responsibilities

• Develop new platform features across the full stack: database, backend, APIs, and UI
• Write backend code in C#/.NET and frontend code in React/TypeScript
• Implement and improve AI agent workflows, LLM/RAG capabilities, and enterprise data search
• Integrate external tools and internal/customer systems via API or MCP
• Deploy to Azure and learn how the product is operated in large-company environments
• Use AI tools for coding, tests, documentation, and information discovery; share results and limitations with the team

Requirements

• Junior: solid foundations in C# and .NET or in React and TypeScript; show working code (school project, personal app, or open-source contribution)
• Mid-Level: practical experience with C#/.NET and React 18+ with TypeScript
• Mid-Level backend experience with APIs, Entity Framework, and asynchronous code
• Mid-Level frontend experience with hooks, state, and forms (e.g., React Hook Form or Redux)
• Ability to write unit tests (e.g., Jest or xUnit) and deliver features independently
• Experience with Git and pull requests
• Ability to read English documentation and write PRs in English
• Comfort using AI coding tools and understanding what MCP is for
• When stuck, independently investigate and clearly communicate what help you need

Benefits

• Work on your own product in a Czech AI startup with European ambitions
• Direct collaboration with leadership and experienced colleagues
• Projects for Czech and international customers; see your solutions used in practice
• Space to develop your profile based on what you do best and enjoy
• Growth as you take on bigger tasks and propose ideas
• Small team, informal culture, and minimal bureaucracy
• Wednesday team lunches, dog-friendly office, and discounted Multisport
• Opportunity for stays at the company guesthouse in Jizerské hory and an office at Bruselská 14 (Prague Vinohrady)