Senior Java/Kotlin Software Developer

Senior Java/Kotlin Software Developer


Are you a great developer who wants to get real hacking skills? We offer you the place to become an expert! 


Job Description  

We are looking for an ambitious and enthusiastic senior software developer who would like to further develop his or her skills. You will learn how to create architectures that are inherently secure. Doing so, you will become an expert on secure programming. You will contribute to our own SaaS applications with which we reach millions of end users. Our code is mission critical for many of our high-profile customers.


The primary responsibilities will include: 

  • Write software that matters! Be part of the team that will enable online authentication for millions of users. 
  • Get training and guidance to become an expert at writing secure software 
  • Penetration test our own software, share secure programming knowledge 
  • Analyze functional requirements and turn them into real software. 
  • Assist team members and review their work.
  • Assist in designing and improving our software architecture 
  • Build and maintain a catalogue of reusable, elegant solution patterns; 
  • Build and maintain a library of reusable, elegant software components; 
  • Improve  standards and guidelines for using these patterns and components. 
  • We work agile, so take part in daily stand-ups and discuss safety features with the product owner 


  • At least a Bachelor's degree in Computer Science 
  • 8+ years of experience developing Java/Kotlin applications 
  • Experience in a senior position in a team
  • Programming is not just your work, it is your hobby and your passion 
  • You enjoy explaining things, discussions and knowledge sharing 
  • Experience Java 8 or higher and/or Kotlin 
  • Experience using CI/CD, version control, and unit testing 
  • Affinity with hacking and security matters 
  • Familiarity with any of the following technologies and methodologies: Spring Boot, OIDC, Angular, Linux, SCRUM/Kanban, REST, Gitlab, PostgreSQL, QA, SAML 

What we offer 

Working at Signicat means committing to an organization with a welcoming atmosphere, with fun and intellectually stimulating colleagues. We communicate informally and know how to find each other easily. We are open to feedback and are very critical. We work hard and with great pleasure.  

  • Competitive salary  
  • 25 vacation days  
  • Pension scheme, and bonus  
  • Fast-growing technical organization with a flat organizational structure  
  • Plenty of room for personal development  
  • You will be well taken care of with drinks, fruit, fresh salads and a lunch without a cash register.  
  • Your work location will be our nice office in Rotterdam, with of course table football and table tennis, near the Central Station.  

About Signicat  

Signicat is a Digital Identity Service Provider (DISP) and is one of the leading providers of electronic identity and signature solutions in Europe/globally. Our security solutions are used at all levels from government and big banks to small business—and everywhere in between. We continue to be leaders in innovative security solutions, reducing risk while providing a smart and intuitive user experience. Signicat has earned the trust of institutions and businesses by providing user authentication, electronic signing, identity proofing and document preservation. 

We are a fast-growing company that has a track record of success as one of the most complete providers of electronic identification services for the Nordic and European markets. While enjoying continued growth we have kept the best of our ‘startup’ ethos, encouraging creativity, initiative and independence to get things done. We value the well-being of each employee and all work together to create a supportive and inspiring work environment. 

Signicat has almost 250 employees at offices in Trondheim (headquarters), Oslo, Bergen, Copenhagen, Helsinki, Stockholm, Rotterdam, Munich, Lisbon and Bucharest. Our focus is security and professionalism and we are constantly working to improve our product and ourselves. 

Please use the application-link, upload your CV and write some words about why you may be interested in working with us. If you want to be part of our highly talented, professional and creative team, then we want to hear from you! 

No recruitment companies please. 

Or, know someone who would be a perfect fit? Let them know!

The Netherlands - Rotterdam

Weena 327
3013 AL Rotterdam Directions View page

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