Junior coder

We are looking for a freelance junior coder with relevant experience in a technical or data-driven business environment.



ESN is looking for a freelance junior coder who will be responsible for:

  • Coding assistance for data management (like bulk insertions and operations, data preparation, interaction with knowledge graph API).
  • The regular entry, update, enrichment, maintenance and retrieval of reporting information in/of a graph database with a user-friendly front end.
  • The successful candidate will work and interact with a team of analysts, will apply, enforce and further develop data entry rules and will regularly provide summaries of the entered data.
  • The position requires regular interaction with a team in Brussels (in-person preferred but remote working possible), with the starting date expected to be mid-September.



  • A bachelor’s degree in a technical or administrative subject, or with equivalent relevant experience
  • Good technical knowledge including coding skills preferably in Python
  • Relevant experience in a technical or data-driven business environment
  • A drive to perform, improve and implement meticulous and repetitive work that other work processes depend on
  • Good technical insight and an eye for detail
  • Provide capacity to understand the role of structured data for business processes and ability to provide proposals for optimization
  • Strong communication skills and the ability to function smoothly both in a team and independently
  • An excellent command of English
  • Good knowledge of MS Excel


  • Experience working with OpenCTI or MISP
  • Prior experience in the cybersecurity sector
  • Experience with STIX 2.1-formatted data
  • Experience working with Python, GraphQL, Elastic Search
  • Good command of French


Please send an up-to-date CV and a motivation letter to esn-vacancies@esn.eu or via the online form.