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November 3, 2026
Senior Full Stack Developer (.NET + React)
Senior • Remote
Kraków, Poland
Quick Facts
Role: Senior Full Stack Developer (.NET + React)
Work model: Remote
Description
You will work on the development and maintenance of fullstack applications built on .NET and React using a microservices architecture. The project includes backend services and REST APIs, React-based user interfaces, database integration, and real-time communication capabilities. You will contribute across the full software delivery lifecycle—from design and implementation to testing, deployment, optimization, and ongoing maintenance.
Responsibilities
Develop and maintain React + TypeScript front-end interfaces
Build and maintain backend services in C# and .NET
Design and implement REST APIs and real-time communication solutions
Optimize data access using PostgreSQL and Entity Framework Core
Participate in event-driven solutions using Apache Kafka
Support technical design discussions and perform/participate in code reviews
Diagnose and resolve issues across frontend, backend, and database layers
Collaborate with Product Owners, UX designers, automation testers, and other engineering teams
Requirements
Very good knowledge of C# and .NET, including ASP.NET Core
Very good knowledge of React, TypeScript, and Material UI
Experience building and integrating REST APIs
Experience with PostgreSQL or other relational databases
Knowledge of Entity Framework Core and SQL query optimization
Experience with Redux Toolkit or similar state management solutions
Knowledge of Docker and container-based development environments
Knowledge of software engineering best practices: testing, code review, and CI/CD
Benefits
Support for professional and personal growth aligned with your goals
Individual support from a Service Delivery Manager
Training, certificates, and conferences with funding/coverage for technical development
#SmartChange option to move to another project based on preferences
Work-life balance initiatives: integrations, sports activities, and #edge1talks webinars
Physical activity support and access to training room rentals
Health package: private care, sports card, insurance, and psychological support
Flexible benefits: choose how to allocate benefit points
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