Senior Software Engineer (React + .NET)

🚀 Twinslash hiring Senior Software Engineer (React + .NET)

🇵🇱 Location - ONLY POLAND!!! Salary - 5200$ gross Are you a fullstack engineer who loves building clean, scalable cloud-native applications? We're looking for a Senior Software Engineer to join a dynamic team working on a modern tech stack — fully remote, with North American working hours (13:00–21:00 CET).

🛠 What You'll Be Working With

Frontend: React (hooks, context, React Query) + TypeScript Backend: .NET / C# · RESTful APIs · Clean Architecture Database: PostgreSQL · Schema design · Performance tuning Cloud: Microsoft Azure · Container Apps · AKS / ACI DevOps: GitHub Actions · Azure DevOps · CI/CD pipelines Testing: TDD · Playwright · Automated UI & E2E tests AI-assisted dev: GitHub Copilot in daily workflow

📋 What You'll Be Doing

✅ Building end-to-end features across React, .NET, and PostgreSQL ✅ Designing cloud-native solutions with Azure containers ✅ Writing clean, testable code with TDD principles ✅ Participating in code reviews & architecture discussions ✅ Collaborating in an agile team with POs and designers ✅ Optimizing apps for performance, reliability & scalability

🎯 What We're Looking For

4+ years of fullstack development experience Strong React + .NET hands-on skills Comfortable with Azure, CI/CD, and modern DevOps Team player with a proactive, quality-first mindset Bachelor's in CS/Engineering or equivalent experience

Bonus points for: Microservices · GraphQL · gRPC · DDD · Jira / Azure DevOps Boards