Backend Engineer (Java/Spring) | Flexible Hours

Commerzbank AG; Łódź; Hybrid; PLN 100,000 - 140,000; Full time

Benefits offered by this job

Development Plans

Life insurance

flexible working hours

integration events

Job summary

Commerzbank AG is seeking a Professional Backend Developer for its flexhub in Łódź. You will build robust Java/Spring-based services, design backend components, and ensure reliable banking platform performance.

Join a team that focuses on engineering solutions without sales pressure, participates in sprints, and collaborates across bank units. Fluency in English and Polish (B2) is required, with hybrid work arranged at Ogrodowa 8, Łódź.

Qualifications

• Experience with Java and Spring in backend development.
• Ability to design robust backend solutions and services.
• Familiarity with RESTful services and SQL databases.
• Proficient in version control with Git and writing tests.
• Comfort with Agile practices and collaborative teamwork.
• Strong problem-solving and technical documentation skills.
• Fluent English and Polish (minimum B2 level).

Responsibilities

• Design and implement complex backend logic using Java and the Spring ecosystem.
• Integrate third-party services and internal systems via secure REST or messaging.
• Translate business requirements into high-performance code.
• Write tests and perform code reviews to ensure quality.
• Contribute to sprint planning and task estimation with the team.
• Deploy services to production and troubleshoot incidents.
• Create architecture diagrams and technical specs for components.
• Stay updated on Java developments and share findings with peers.
• Explain technical challenges to product owners in clear terms.
• Refactor legacy code to improve performance and maintainability.

Skills

Java

Spring Framework

RESTful Web Services

SQL

Git

Object-oriented Design

Unit Testing

Agile Methodologies

Problem Solving

Technical Documentation

English

Polish

Tools

Git

SQL

Job description

Commerzbank AG is seeking a Professional Backend Developer for its flexhub in Łódź. You will build robust Java/Spring-based services, design backend components, and ensure reliable banking platform performance.

Join a team that focuses on engineering solutions without sales pressure, participates in sprints, and collaborates across bank units. Fluency in English and Polish (B2) is required, with hybrid work arranged at Ogrodowa 8, Łódź.