Senior Fullstack Developer (.NET+React)

• Tech industry
• Rate: up to 137 zł/h
• Start in December 2026
• Remote work

Summary: This role is crucial for the development of a FinTech application tailored for international banks and financial institutions, focusing on creating robust web solutions to enhance financial services.

Responsibilities

• Designing web solution architecture based on best practices, utilizing microservices and 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.

Must Haves

• Over 4 years of commercial programming experience with .NET, C#, React, and TypeScript.
• Strong understanding of software architecture principles and backend design patterns.
• Exposure to cloud environments (Azure or AWS).
• Fluency in English and Polish (minimum B2+).
• Hands-on experience with CQRS and Domain-Driven Design (DDD).
• Understanding of Event Sourcing concepts.
• Solid knowledge of clean architecture and separation of concerns.
• Experience with PostgreSQL and modern ORM frameworks.
• Exposure to CosmosDB or similar NoSQL/document databases.
• Experience designing and consuming RESTful APIs.
• Familiarity with Docker for local development and deployments.

Nice to Haves

• Experience with additional cloud platforms.
• Knowledge of front-end frameworks beyond React.
• Certifications in relevant technologies.

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