End-to-End Full Stack Engineer (React/.NET) - Hybrid

Belvedere; Poland; Hybrid; PLN 180,000 - 280,000; Part time

Job summary

Belvedere is seeking a Full Stack Developer to deliver complete business features from concept to production in a hybrid role in Warsaw. You will own backend APIs with .NET/C#, build frontend with React and TypeScript, and integrate cloud services to support risk, compliance, and reporting requirements.

The role emphasizes security, code quality, and collaboration across cross-functional teams, with an expected 2-month contract and opportunities to work on modern tech stacks including Azure,

Qualifications

• 6-8 years of relevant software development experience.
• Strong proficiency in .NET and C# fundamentals.
• Proven experience building ASP.NET Core Web APIs.
• Solid React and TypeScript skills for frontend work.
• Experience with SQL and NoSQL databases and data modelling.
• Experience with cloud platforms and security-focused development.

Responsibilities

• Design and implement backend APIs and business logic using .NET and C#.
• Build frontend functionality using React and TypeScript.
• Model data and optimise queries across SQL and NoSQL databases.
• Deliver complete features spanning backend, frontend, and integration boundaries.
• Troubleshoot and resolve production issues across multiple application layers.
• Contribute to code reviews, testing strategies, and technical quality standards.
• Support integration with external systems and cloud-connected services.
• Apply security best practices including secure API design and tenant-boundary thinking.

Skills

.NET

C#

ASP.NET Core

React

TypeScript

SQL

NoSQL

Cloud platforms

Security

Independent work

Tools

MongoDB

Azure SQL

Azure

Job description

Belvedere is seeking a Full Stack Developer to deliver complete business features from concept to production in a hybrid role in Warsaw. You will own backend APIs with .NET/C#, build frontend with React and TypeScript, and integrate cloud services to support risk, compliance, and reporting requirements.

The role emphasizes security, code quality, and collaboration across cross-functional teams, with an expected 2-month contract and opportunities to work on modern tech stacks including Azure,