JAVA Developer

Tallinn / Tartu / Estonia

Guardtime is looking for JAVA Software Developer

About Guardtime

Guardtime is an international team of cryptographers, developers and security architects, with decades of experience in building cyber security solutions. Over the last decade we have built a technology platform called KSI Blockchain that allows us to tackle hard problems in security, supply chain, compliance and networking.

About The Role

Your role will be developing and maintaining Guardtime applications, tools and participating in integrations. You will be working in a small development team located in Tallinn or Tartu and be a part of an international organization where most of the clients and market is growing overseas. You will be making build decisions, influencing product development and participating in more complex integration projects.


  • Develop and maintain product updates based on existing tools and frameworks
  • Research and design solutions for prototypes
  • Maintain and support solutions for our internal tools and IT
  • Consult external integration users on best practices and Guardtime technology


  • Strong development background with scalable systems
  • Experience in developing web services
  • Experience in rapid prototyping, agile development
  • Result oriented and eager to learn


  • BSc or MSc degree in CS or equivalent years of work experience
  • 3+ years of hands-on programming experience in an object oriented programming language, e.g. C++, Java etc
  • Some experience with scripting languages such as Python, Perl etc
  • Familiarity with networking and data format standardization
  • Good knowledge of basic network protocols
  • Confidence in expressing product development ideas to a variety of business and technology focused people
  • Good communication skills, not afraid to work in multicultural and multi-language company
  • Ability to work with team and partners in multiple geographical locations
  • Fluent in English

Please send your CV and motivation letter in English to [email protected]