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
• Fully remote or hybrid model
• Long‑term B2B contract with a stable project pipeline
• Work in a multilingual, multinational, and multicultural environment on international projects