Senior Java Backend Developer (Financial Technology)

Quick Facts

• Role: Senior Java Backend Developer (Financial Technology)

• Work model: Warsaw-based with remote work (5 days/week)

Description

Build scalable, high-performance backend applications using Java, Kafka, REST APIs, and PostgreSQL for the financial sector. Collaborate with cross-functional teams, optimize performance, reliability, and security, and perform code reviews while resolving complex technical issues with minimal downtime. Occasionally enhance integrated features with Angular front-end development.

Responsibilities

• Design, develop, and maintain scalable backend applications with Java, Kafka, REST APIs, and PostgreSQL

• Collaborate with cross-functional teams to deliver financial technology solutions

• Optimize system performance, reliability, and security

• Participate in code reviews and ensure high-quality coding standards

• Occasionally develop front-end components with Angular

• Troubleshoot and resolve complex technical issues efficiently

• Stay current with emerging trends and propose improvements

Requirements

• Minimum 5 years of Java backend development experience

• Strong knowledge of Kafka, REST API design, and PostgreSQL

• Experience with or knowledge of Angular (plus)

• Proven ability to deliver high-quality, scalable solutions in a fast-paced environment

• Good command of Polish

• Communicative level of English

Benefits

• Dynamic environment for professional growth and technological advancement