Fullstack Developer (React+.NET)

CSHARK is working on an application for an 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 (experience predominantly in back-end is acceptable).
• Strong understanding of software architecture principles and backend design patterns (e.g., dependency injection, repository, mediator, factory).
• Exposure to cloud environments (Azure or AWS) and understanding of infrastructure and services.
• Fluency in English and Polish (minimum B2+).
• 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 modeling 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 Cosmos DB or similar NoSQL/document databases.
• Experience designing and consuming RESTful APIs.
• Familiarity with Docker for local development and deployments.

• Designing web solution architecture based on best practices, using microservices and the cloud services.
• 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.

The recruitment process requires the candidate's consent to personal data processing according to GDPR regulations. Data will be processed for hiring purposes and may be stored on European servers and transferred to third countries under appropriate safeguards. Providing obligatory personal data is required for recruitment participation; refusal results in recruitment exclusion. Candidates have rights including data access, correction, deletion, and objection, as detailed in the information clause.