Senior Backend Developer


Location: Amsterdam or The Hague, The Netherlands

Are you that excellent Senior Backend Developer who wants to make a difference working on our innovative AI based cognitive content management platform using the latest technology and techniques? We are Onior with offices in The Hague and Amsterdam.

As a Senior Java Developer, you are strong in finding creative solutions using new techniques and frameworks, and together with the team, you can make the right technical choices.

You will become part of our enterprise software product team. This product team consists of Scrum teams featuring multiple disciplines like Product Owner, Software Architect, Test Automation Specialists, DevOps engineers, Frontend Developers, Backend Developers collaborating to offer the best product for our clients.

You are a sparring partner for the Product Owner and decide on the possible interpretation of the sprints and then take the responsibility to realize this efficiently, together with your team members. You are responsible for improving the quality of our software products.

Who are you?

  • At least 5 years of work experience as a Java Developer with expertise in Java 8, Spring framework, SpringBoot, REST, JSON, XML, Web Services;
  • Experience with Microservices Architecture and developing microservices;
  • Experience with SQL and NoSQL databases, ActiveMQ, Kafka, Docker, and Kubernetes;
  • Preferably you have experience with Elasticsearch;
  • Hands-on experience in working in Scrum teams;
  • Passionate about writing good quality code and implementing creative solutions;
  • Business sense: you balance technical perfection with business needs and priority;
  • Preferably you have experience in product development;
  • Good communication and collaboration skills;
  • Based in The Netherlands.

About is the provider of intelligent content management. Our platform leverages innovative artificial intelligence (AI) and machine learning technologies to process and manage unstructured information, such as scanned documents and images, to gain added value from them. In doing so, the platform can automatically analyse, enhance, enrich and improve content and retrieve data more accurately.

The platform integrates seamlessly with business applications and processes in the current IT landscape, which means it can process unstructured content in existing systems. This enables our clients to respond to the explosive growth of information and the actions required to store data in the correct manner, compliant with privacy legislation (GDPR).

What do we offer?

      • A challenging and responsible position within an ambitious and growing (international) organization;
      • Working on innovative software product leveraging state of the art technologies;
      • A pleasant work environment where you can take ownership, share ideas and launch new initiatives;
      • Freedom in planning your work;
      • A good salary that meets your background and work experience;
      • 26 holidays per annum (based on full-time FTE);
      • A study budget for personal development.


If you are interested in this role, please apply by sending your resume (CV) and motivation to

Please note: this is a permanent position, freelance is not an option.
Acquisition based on this vacancy is not appreciated.