🚀 Freelance Senior Fullstack Developer (C#, .NET, PostgreSQL) — 3 to 6 months

HEXCLOUD CONSULTING builds software platforms for public administration and private clients — document management systems, ISO compliance platforms (19650, 27001), agentic AI tools. We're looking for an experienced senior freelance fullstack developer to help us ship features quickly, to a high standard, on a product already in production.

This is a remote, renewable B2B contract of 3 to 6 months. You'll work closely with our team, own features end to end, and use AI-assisted development (Claude Code) to move fast while keeping code clean, tested and reviewed.

If you enjoy short iteration cycles and know how to get the best out of an AI coding assistant without sacrificing quality, we'd like to meet you.

📋 The assignment

· Contract: B2B / freelance, independent contractor

· Duration: 3 to 6 months, renewable

· Start: as soon as possible

· Location: fully remote

· Pace: fast, short iterations

· Working language: Romanian or English

· Rate: 20-40 EUR/hour

🛠️ What you will do

· Build and ship new features end to end, from specification to production

· Turn requirements into technical tasks and deliver them in short iterations

· Write clean, testable code in C# / .NET 8 (Clean Architecture) and React 18

· Design and optimize PostgreSQL schemas and queries

· Use AI-assisted development (Claude Code) daily, while owning code quality and architecture decisions yourself

· Take part in code review and keep documentation current

✅ What we're looking for

· 5+ years of professional experience in software development

· Strong hands-on experience with C# / .NET (ideally .NET 8, Clean Architecture)

· Solid experience with PostgreSQL or another relational database — schema design, query optimization

· Working knowledge of React 18 for genuine fullstack ownership

· Comfortable working independently, with minimal supervision, on a fast-moving product

· Experience with Git, CI/CD, and automated testing

· Familiarity with AI-assisted coding tools (Claude Code, Copilot or similar) is a strong plus

· Good written communication — most coordination happens async

· Able to invoice B2B/PFA

• #dotnet #csharp #postgresql #reactjs #freelance #remotejob #B2B