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April 8, 2026

Senior Full Stack Developer (React & .NET Core)

Senior • Remote

120 - 155 USD

Warsaw, Poland

About the Role

We are looking for a Senior Full Stack Developer with strong expertise in React on the frontend and C# .NET Core on the backend to build and enhance enterprise-grade applications in the capital markets and risk domain. The role involves developing scalable microservices, modern web applications, and data-driven solutions in a cloud environment.

Key Responsibilities

  • Design, develop, and maintain full stack applications using React and C# .NET Core

  • Build and maintain REST APIs and microservices in distributed environments

  • Develop modern, responsive UI components using React, TypeScript, and modern frontend patterns

  • Work closely with business stakeholders in capital markets and risk domains (credit risk, market risk)

  • Develop and maintain Power BI dashboards and data models for business reporting

  • Implement and maintain CI/CD pipelines and automated deployment processes

  • Contribute to event-driven architecture using tools such as Kafka or similar messaging technologies

  • Participate in cloud migration and modernization initiatives (Azure or AWS)

  • Ensure code quality through testing, code reviews, and best engineering practices

  • Mentor junior developers and contribute to architectural decisions

Requirements

  • Strong experience with React, JavaScript/TypeScript

  • Strong experience with C#, .NET Core, REST APIs

  • Experience building microservices and distributed systems

  • Experience with CI/CD tools (Azure DevOps, Jenkins, GitHub Actions)

  • Experience with Azure or AWS

  • Experience with Power BI and data modeling

  • Strong SQL and database knowledge

  • Experience with Docker / Kubernetes

  • Experience working in capital markets, especially credit risk or market risk

  • Strong understanding of software architecture and system design

  • Excellent communication skills and experience working with business stakeholders