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
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