Java / Fullstack Developer (m/f/d)

Commerzbank Digital Technology Centre Poland; Łódź; Hybrid; PLN 90,000 - 140,000; Full time

Benefits offered by this job

Life insurance

Flexible working hours

Development plans

Integration events

Job summary

Commerzbank Digital Technology Centre Poland in Łódź is seeking a Java / Fullstack Developer to join the Daily Banking Middletier cluster. You will work on core backend and middletier services for online and mobile banking, with a focus on secure, highly available systems and regulatory compliance.

You will implement production requirements, design IAM solutions, and support deployment and operations in a hybrid environment at Ogrodowa 8, Łódź.

Qualifications

• Proficient in Java and JavaScript with Spring (MVC/Boot).
• Experience in web tech: React, REST, JSP, XML, OpenID Connect, OAuth2.0.
• Fluent English (minimum B2) and collaboration in cross-functional teams.

Responsibilities

• Implement production requirements and their documentation.
• Design, implement, and integrate IAM solutions including OAuth 2.0 and OpenID Connect.
• Analyze and implement technical production requirements including BOS requirements.
• Open and execute changes with smaller project and infrastructure operations.
• Support fault analysis in TU-C environment.
• Perform technical acceptance tests (ACT).
• Assist Product Owner in technical analysis of requirements.
• Support maintenance of jobs in the task scheduler (e.g., UC4).
• Input on COMDIA descriptions and rights, recertification.
• Maintain mandatory documents: Compliance Check / PO cockpit.
• Open changes for production operations; Change Coordination.
• Support regression tests for payment transactions in core systems.
• Handover software to ADIS for deployment and audit mapping.

Skills

Java

JavaScript

Spring Framework

REST APIs

OAuth 2.0/OpenID Connect

CI/CD

Tools

Eclipse

Git

JIRA

IntelliJ

Maven

Bitbucket

TeamCity

Job description

Join our team as a Java / Fullstack Developer!

In the cluster Daily Banking Middletier, we shape the digital banking experience for millions of retail and corporate customers. With around 20 specialized cells across four locations, we are responsible for the core backend and middletier services behind online and mobile banking, delivering them securely, with high availability, and in full regulatory compliance.

What sets us apart is that we combine reliable platform ownership with genuine future-focused work. We are modernizing a complex system landscape with AI, establishing cross-channel standards, and thereby enabling new digital and AI-supported use cases across the bank. People who join us help shape critical infrastructure with visible impact on customers, operations, and the bank’s strategic evolution.

In order to ensure compliance with current market trends, regulatory requirements as well as Commerzbank’s Book-of-Stardards (BOS) requirements we look for a committed and passionate development engineer to technologically move forward our paper-based payments business.

Your Main Tasks Are

• Implementation of production requirements and their documentation
• Design, implement, and integrate modern identity and access management (IAM) solutions, including OAuth 2.0–based authentication and authorization flows, token management, API security, and related standards such as OpenID Connect.
• Analysis and implementation of technical production requirements for the software used, including BOS requirements
• Open and execute changes with smaller project and infrastructure operations
• Support in fault analysis, also in TU-C environment
• Perform technical acceptance tests (ACT): Installation and first functional tests
• Support the Product Owner in the technical analysis of requirements with regard to the software used
• Support of the operating colleagues in the maintenance of jobs in the task scheduler (e.g. UC4)
• Input on COMDIA description of technical users and technical rights, recertification
• Maintenance of mandatory documents: Compliance Check / PO cockpit
• Opening of changes for production operations (major technical infrastructure topics as well as major specialist topics/application uses); Change Coordination
• Support of business experts in specialist regression tests, specialist tests in the core systems for the documented payment transactions
• Transfer of software to ADIS (Application Deployment information Service) - handover and storage of software to be installed in accordance with the audit and mapping of deployment processes

What is important for us?

• Java, Javascript
• Spring (both MVC and Boot)
• Web Technologies: REACT-JS, REST, JSP, XML, openID-Connect, OAuth2.0
• Dev-Tools: Eclipse, GIT, JIRA, IntelliJ, Maven
• CICD
• (Bitbucket, TeamCity)
• Database: PostgreSQL
• OS: Windows, Linux
• Fluency in English at a minimum B2 level.

How?

Hybrid on Ogrodowa 8 street Łódź

What we offer?

• Development Plans for employees
• Life insurance
• flexible working hours
• integration events
• and much more