Hybrid Warsaw: Senior Fullstack Java + React Engineer

B3 Consulting Poland; Warszawa; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Health benefits

Sports benefits

Speed Coaching

Team activities

Job summary

B3 Consulting Poland is seeking a seasoned Fullstack (Java + React) developer to work on a fast-growing internal project processing large volumes of financial data.

You will build features with Java, Spring Boot and React, and support production systems while collaborating with an international team. Hybrid work in Warsaw, English proficiency required, and experience with Agile teams is essential.

Qualifications

• 5+ years of commercial experience with Java, including Spring Boot.
• 5+ years of experience with React.
• Experience with Docker and SQL; large databases experience is a plus.
• Experience working in Agile teams.
• English at B2+/C1 level; readiness for hybrid work in Warsaw.

Responsibilities

• Develop a new application processing very large volumes of financial data using Java, Spring Boot and React.
• Implement business modules for the investment fund market, including settlements and reconciliations.
• Maintain and support live production systems with incident handling and user support.

Skills

Java

React

Tools

Docker

SQL

Job description

B3 Consulting Poland is seeking a seasoned Fullstack (Java + React) developer to work on a fast-growing internal project processing large volumes of financial data.

You will build features with Java, Spring Boot and React, and support production systems while collaborating with an international team. Hybrid work in Warsaw, English proficiency required, and experience with Agile teams is essential.