Java Software Engineer (m/f/d) in Cologne

trimplement specializes in software consulting, development and maintenance of online payment systems. With our own flagship product CoreWallet, we provide an e-wallet framework for start-ups and companies. Our clients are at home in different industries and in various international markets. We support them with sophisticated software projects on the basis of CoreWallet as well as with our software development expertise.

To expand our team, we are looking for Java Software Engineers (m/f/d) to join us at the earliest possible time.

Your Tasks

  • Supporting our clients’ projects through consulting, requirement engineering, technical conception, software architecture, design and implementation
  • Further development of our product CoreWallet
  • Active adoption of agile software development processes, when working internally or on our clients’ behalf
  • Technical project management

For more information about how we work, have a look at a case study.

Your Profile

Every day, we are working on business critical systems und help and advise our clients with our yearslong experience in online payment. Therefore, we expect a sound professional experience, a high degree of independence and a confident demeanor towards our customers are a must.

You will fit right in if you are a highly motivated Java Developer who likes to think outside the box. Instead of just committing to business as usual, we appreciate if you like trying out new technologies and can back that up with projects you worked on.

Qualifications you should possess:

  • a degree in Computer Science or a similar field of study
  • relevant work experience in software development
  • the ability to work independently and self-organized
  • high proficiency in Java
  • experience with Spring, Hibernate, Quartz
  • experience with Maven, Jenkins, Sonar, JMeter, Git
  • experience in working with RDBS (MySQL, MariaDB, Oracle, PostgreSQL)
  • good written and spoken English
  • willingness to take occasional international business trips to support our clients on-site

Advantageous skills you might possess:

  • Experience with web technologies (HTML 5, CSS 3, JavaScript), especially with JavaScript frameworks like React, Ember.js or Angular
  • Experience in electronic payment processing

What We Offer

We are a small and friendly team, featuring a straightforward company culture and flat hierarchies. You have the opportunity to quickly assume responsibility and actively advance projects from day one forward.

We offer you:

  • working on exciting projects for international clients in a competitive, highly innovative industry
  • flexible working times with home office, incl. a budget for home office equipment
  • 30 days of paid vacation
  • attractive extra benefits (state-of-the-art hardware, office equipment, company pension scheme, regular team events, job ticket,...)
  • regular further education options in courses, workshops or conferences of your choice
  • a performance-based salary with annual adaption


Please send your application documents (motivational letter with the desired salary and possible start date, resume and references) and optional links to your projects (i. e. GitHub profile, StackOverflow profile) to Matthias Gall,

We are looking forward to hearing from you!