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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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