Full Stack .NET Developer (C# / React / TypeScript)

New

Senovo-ItE-commerce

100% Remote – PolandContractMiddle

Salary20,000 - 21,000 PLN per month

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Job Details

Have 5+ years of commercial software development experience, ideally in full-stack roles.
Bring strong hands-on experience with C# and .NET / ASP.NET Core.
Have strong frontend development experience with React, JavaScript and TypeScript.
Have experience with Redux, Redux Toolkit or other state management solutions.
Have solid knowledge of REST APIs and backend architecture.
Have strong SQL skills, including query optimisation and relational databases.
Have practical experience with legacy application modernisation, refactoring or system migrations.
Have experience identifying and resolving application performance issues.
Understand software architecture, design patterns, SOLID principles and clean code.
Have experience with unit testing, Git and CI/CD practices.
Be able to independently analyse and troubleshoot complex applications.
Have strong analytical thinking and problem-solving abilities.
Have good communication skills in Polish and English.

Develop, maintain and enhance full-stack applications using C#/.NET, React and TypeScript.
Analyse existing applications, understand business logic and improve legacy codebases.
Support application modernisation, refactoring and migration initiatives.
Identify and resolve performance bottlenecks across frontend, backend and databases.
Design, develop and optimise REST APIs and backend services.
Improve frontend performance, state management and overall user experience.
Optimise SQL queries, database operations and application response times.
Refactor tightly coupled components to improve code structure, scalability and maintainability.
Write clean, testable and reusable code following software engineering best practices.
Collaborate with developers, architects and business stakeholders.

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