Senior Software Engineer (React + .NET) Offline

Location: Remote (Poland)
Working hours: 13:00–21:00 CET (occasionally 15:00–23:00 CET)
Project duration: 12.04.2026 – 31.12.2026
 

About the role
We are seeking a Senior Full-Stack Engineer to join a project focused on building scalable, cloud-based solutions. This is a fully remote position within Poland, aligned with North American working hours. The role involves working across the entire stack, including frontend, backend, and cloud infrastructure.

Responsibilities

• Deliver full-stack features covering React frontend, .NET backend APIs, and PostgreSQL database
• Design and develop cloud-native applications using Azure container services
• Write clean and maintainable code following TDD principles
• Develop and support automated tests, including UI and end-to-end (preferably with Playwright)
• Collaborate closely with product managers, designers, and engineers in an agile setup
• Use GitHub Copilot to improve development productivity
• Take part in code reviews and contribute to architectural decisions
• Identify, debug, and resolve performance and scalability issues

Requirements

Frontend

• Strong hands-on experience with React (hooks, context, state management, React Query)
• Experience with TypeScript is a strong advantage

Backend

• Solid background in .NET (C#) and REST API development
• Understanding of dependency injection, middleware, and API versioning
• Experience with clean or layered architecture approaches

Database

• Practical experience with PostgreSQL, including schema design and optimization

Cloud & DevOps

• Experience working with Microsoft Azure (AKS, ACI, or Azure Container Apps)
• Familiarity with CI/CD tools such as GitHub Actions or Azure DevOps

Testing

• Strong knowledge of test-driven development (TDD)
• Experience with Playwright or similar testing frameworks

Tools

• Comfortable using GitHub Copilot or similar AI-assisted development tools

Soft Skills

• Good communication and collaboration skills
• Proactive approach with focus on quality delivery
• Ability to work effectively in a dynamic agile environment

Nice to have

• Experience with microservices or distributed systems
• Knowledge of GraphQL or gRPC
• Familiarity with Domain-Driven Design (DDD)
• Experience with Jira or Azure DevOps Boards

Qualifications

• Bachelor’s degree in Computer Science, Engineering, or a related field (or equivalent practical experience)
• 3+ years of professional experience in full-stack development