React) DeveloperPoland, UkraineSoftware Engineering,.NET.

Eleks

📍 Poland, Poland, Poland 💼 Full-time 🕒 Posted February 18, 2026

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Job Description

ELEKS is looking for a Middle Strong/ Senior Full-Stack (.NET+ExtJS/ React) Developer in Ukraine and Poland.
ABOUT PROJECT

Our client is a leading global professional reinsurance company from the USA, providing a broad range of risk, retirement, and health solutions. The company is one of the largest insurance brokers worldwide.
The project is ongoing and involves active development, feature implementation, PoCs, refinements, and a small portion of production support (up to ~10%).

REQUIREMENTS
4+ years of experience in software development

Strong experience with .NET Framework 4.8 and .NET 8

Web technologies: ExtJS (or strong JavaScript experience as an alternative) and React

Strong knowledge of MS SQL

Experience with Entity Framework, 

Nice to have: Azure, Quartz

At least Upper-Intermediate level of English

Solid understanding of e...

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Job Details

Location Poland, Poland
Job Type Full-time
Category Computer Occupations
Posted Date February 18, 2026
Application Deadline March 30, 2026