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Kozak Agency

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Senior Full-Stack Developer (React, NET)

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We are looking for a Senior Full-Stack Developer with extensive software development experience, strong technical expertise, and the ability to independently deliver high-quality software.
An important part of this role is using modern AI coding tools to develop and maintain software, including Claude or similar solutions.

Requirements
10+ years of experience in software development.
Strong hands-on experience with React and/or Preact.
Knowledge and experience with .NET.
Practical experience using AI coding tools such as Claude, Cursor, or GitHub Copilot.
Ability to independently develop, test, and maintain high-quality, production-ready code.
Strong technical decision-making skills and the ability to take ownership of complex tasks and deliver results.
English proficiency at Upper-Intermediate level or higher.

Nice to Have
Experience using AI tools to work with large codebases.
Experience improving development workflows with AI.
Ability to review AI-generated code, identify potential issues, and ensure code quality and reliability.

Skills

What Senior Full-Stack jobs ask for — and how much of it you have →
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See also

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