FullStack .NET + React Developer

We’re looking for an experienced FullStack .NET Developer to join a greenfield digital transformation project in the corporate banking sector. You’ll help build a modern, high-performance system from scratch using .NET 6/8, React, Kafka, and microservices integrated with multiple enterprise platforms — a project that will have a long-term impact on thousands of users. Responsibilities: - Build scalable backend features in .NET 6/8 and contribute to a microservices-based architecture - Develop clean, reusable components in React integrated with REST APIs - Implement and integrate REST/SOAP services and event-driven systems with Kafka - Work closely with analysts, architects, and business stakeholders on requirements and design - Participate in testing, deployment, and optimisation to ensure high system performance Requirements - 5+ years of experience in .NET development - Strong skills in .NET 6/8, REST, SOAP, SQL Server, Entity Framework - Hands-on experience with React - Familiarity with Kafka and distributed/microservices architecture - Understanding of enterprise system integration and APIs - Fluency in Polish and English (B2 level or higher) Nice to have: - Experience in banking or financial systems - Knowledge of secure systems or mobile banking - Familiarity with DDD, event storming, or user story mapping - Experience working in Agile/SCRUM environments Benefits - Competitive salary - Fully remote or hybrid model - Long-term B2B contract with a stable project pipeline - Comprehensive healthcare - Work in a multilingual, multinational, and multicultural environment on international projects Originally posted on Himalayas