Sr Full-stack Developer (React, Java)

Contractor position for an international financial institution in Warsaw, focused on the Treasury business area within a global development team.

• 5+ years of software engineering experience, preferably full-stack
• Good knowledge of React
• Good knowledge of Java and Spring Boot
• Desired experience in Python scripting
• Experience with unit and integration testing
• Experience with AI tools for developers

Nice to have:

• Experience in finance/fintech sector
• Knowledge of Redux, Claude, Jest, Cypress
• Fluent English

• Perform full-stack development tasks using React, Java, Spring Boot, and Python for Treasury business area
• Collaborate within a large-scale global development team

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