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Fullstack Developer (React+.NET) @ CSHARK Sp. z o.o.
  • Bielsko-Biala
Fullstack Developer (React+.NET) @ CSHARK Sp. z o.o.
Bielsko-Biała, Bielsko-Biala, Silesian Voivodeship, Polska
CSHARK Sp. z o.o.
2. 11. 2025
Informacje o stanowisku

We are looking for an experienced Fullstack Developer (React+.NET) for a 6 months engagement (with the possibility of extension). We value direct communication and an open approach to problem-solving.

Currently, we are working on an application for our international client in the FinTech industry, dedicated to banks and financial institutions.


  • Over 4 years of commercial programming experience with .NET, C#, React and TypeScript (but will be ok more experience in back-end).
  • Strong understanding of software architecture principles and backend design patterns (e.g., dependency injection, repository, mediator, factory).
  • Exposure to cloud environments (ideally Azure) and understanding of infrastructure and services.
  • Fluency in English and Polish (minimum B2+) - a must.
  • Hands-on experience with CQRS and Domain-Driven Design (DDD), including aggregates, entities, value objects, and bounded contexts.
  • Understanding of Event Sourcing concepts - including event stores, event replay, and how to model state changes as immutable domain events.
  • Solid knowledge of clean architecture and separation of concerns.
  • Experience with PostgreSQL and modern ORM frameworks (e.g. Entity Framework or equivalent).
  • Exposure to CosmosDB or similar NoSQL/document databases.
  • Experience designing and consuming RESTful APIs.
  • Familiarity with Docker for local development and deployments.

We are looking for an experienced Fullstack Developer (React+.NET) for a 6 months engagement (with the possibility of extension). We value direct communication and an open approach to problem-solving.

Currently, we are working on an application for our international client in the FinTech industry, dedicated to banks and financial institutions.

,[Designing web solution architecture based on best practices, using microservices and the AWS cloud., Developing within a SaaS product platform., Implementing new functionalities using .NET and React., Designing, developing, and maintaining APIs, services, and systems on a cloud-based platform., Building high-performance front-end and back-end solutions., Preparing tests and technical documentation., Being part of a SCRUM team that develops and delivers software solutions throughout the entire production lifecycle. Requirements: .NET, MS SQL, NoSQL, Data base, Elasticsearch, Microservice architecture, AWS, DDD, TDD, CI/CD, SOLID, IaC, React, TypeScript, PostgreSQL, Cosmos DB Additionally: Remote work.

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