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