Junior Fullstack Engineer (.NET/React) - full remote

Pracovní nabídka

Join a team that pushes the boundaries of artificial intelligence and creates innovative solutions for global clients. This is an American company with a development team based in Ostrava. Their products leverage the latest technologies to help businesses automate processes, improve decision-making, and deliver real value through AI-driven applications. We are looking for a talented Junior Full-stack Engineer who wants to contribute to the development of modern web systems and learn from experienced professionals.

Type of cooperation: full remote

Your responsibilities:

Backend part (70%)

• Design and ship services in .NET 6-9/C#
• Own data modelling in PostgreSQL-schema design, Dapper queries, DbUp migrations, indexing, query optimization.
• Work with Apache Cassandra 5.0 for agent and conversation data
• Build and extend Tenant Management: authentication flows, RBAC, secrets management, billing integration, and cross-tenant access rules.
• Build REST APIs with idempotent workflows, back-pressure, and retry strategies; integrate with RabbitMQ for async pipelines.
• Implement SignalR hubs for real-time chat streaming and live updates.
• Integrate with LLM providers via Azure AI Foundry SDK and AWS Bedrock SDK-implement function calling, manage token streaming, handle retries and fallbacks.
• Collaborate with our Python agent execution engine (cognitive_diagram)-understand how agents are orchestrated, how tool calls flow between .NET and Python, and debug cross-service issues.

Frontend part (30%)

• Build and iterate on React 19 interfaces-admin consoles, data grids, forms, workflow builders.
• Implement real-time features using SignalR client for chat streaming and live data updates.
• Work with DevExtreme components for data grids and UI elements; React Flow for diagram/workflow visualization.
• Write clean component code with React Hooks (useState, useEffect, useCallback) and Context API for state management.

Our reguirements:

• Experience as developer in .NET/C#
• PostgreSQL experience: schema design, writing queries, understanding indexes.
• Solid React experience: hooks, component architecture, state management.
• Strong grasp of Design Patterns and SOLID principles
• Distributed systems understanding: concurrency, async/await patterns, transactions, and consistency trade-offs.
• CI/CD and Docker fluency.
• LLM integration experience: working with AI model APIs (Azure OpenAI, AWS Bedrock, or similar), function/tool calling patterns, and token streaming (would be a bonus point)
• Clear async communication skills-critical for remote collaboration

Why this company?

• fully remote cooperation
• small teams
• interesting product
• competitive compensation
• own real infrastructure
• non corporate environment, low bureaucracy