Join our FlexHub team as a Fullstack Developer!
What is FlexHub? We are Commerzbank's internal delivery capability – a team of engineers, architects, analysts and experts working directly with business units. Unlike external consultancies, we are colleagues who stay. Based in Frankfurt, Sofia, and Łódź, we drive high-priority initiatives while building internal expertise that lasts.
What's in it for you: Consulting variety meets corporate stability. You join different teams across the bank when your expertise is needed, then move on to the next challenge. This approach helps you build strong internal know-how and gives you the chance to contribute to meaningful work – one initiative at a time – without sales targets or utilization pressure. No selling. Just a consistent focus on engineering solutions that matter.
As a Specialist Fullstack Developer at flexhub, you drive the technical quality and architecture of our integrated systems. You architect scalable solutions, mentor junior colleagues, and solve the most difficult engineering problems we face. Your deep expertise in both Java and frontend architectures allows you to make decisions that last. You are the technical anchor your team relies on.
What will you be doing?
Design and develop
critical full-stack modules capable of handling high transaction volumes.
Define interface contracts
and ensure data consistency across distributed systems.
Solve complex technical challenges , including concurrency and memory management issues.
Define testing strategies
and ensure adherence to security and development best practices.
Support the team
during technical planning and help resolve technical blockers.
Analyse production metrics
to identify bottlenecks and support capacity planning.
Document key architectural decisions
using Architectural Decision Records (ADRs).
Mentor and support developers , helping them grow their technical skills and advance their careers.
Advise Product Management
on the technical feasibility, complexity, and risks of new features.
Drive continuous improvement
by introducing tools, frameworks, and practices that increase developer productivity and software quality.
What is important for us?
Hands-on experience with Java and React
Experience with RESTful Web Services
Good knowledge of SQL, HTML5, and Git
Experience with unit testing
Good understanding of object-oriented design principles
Experience working with Agile methodologies
Fluency in English and Polish, both at a minimum B2 level
Strong analytical and problem-solving skills, with attention to detail
Customer-oriented mindset with a proactive approach and a strong sense of ownership
Ability to deliver high-quality results on time
Excellent communication and collaboration skills
Flexibility and ability to adapt to a fast-changing environment
A strong team player, comfortable working in international and cross-functional teams
What we offer? Of course, we offer Development Plans for employees, Life insurance, flexible working hours, integration events and much more
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Fullstack Developer - FlexHub Team (m/f/d) in Łódź – pracodawca: Commerzbank AG
Commerzbank to doskonały pracodawca, który oferuje wyjątkowe możliwości rozwoju zawodowego w dynamicznym i innowacyjnym środowisku. Pracując w Łodzi jako Senior Cloud Engineer, będziesz częścią zespołu, który przekształca dane w wartościowe informacje, korzystając z najnowszych technologii analitycznych i AI. Oferujemy elastyczne godziny pracy, plany rozwoju dla pracowników oraz integracyjne wydarzenia, co sprzyja budowaniu silnej kultury pracy zespołowej.
