Summer worker – Software Developer

The European Spallation Source (ESS) in Lund, Sweden is a partnership of 13 European countries with the mission to design, construct and operate the world’s most powerful neutron source. Working with us means being part of a challenging and exciting work environment, at a stunning, brand-new workplace filled with innovative minds and brilliant people from across the globe.  About the position We are now looking to appoint a summer worker for the Detector group in the NSS (Neutron Scattering System) division. The Detector group is responsible for design, production, assembly, testing, installation, commission, reparation, and maintenance of the detectors and the peripheral systems. Now, the Detector group is expanding in its capacity to receive detector systems from ESS In-Kind partners as well as to produce ESS own detector systems for the delivery of ESS’ first 16 instruments. As an Software Developer - summer worker your main tasks will be as followings: • Support improvements of testbed setup for neutron detectors • Sort out and present data from test results using software tools About you A suitable background for this position would be: • Having expertise in Python • Having practical experience in data processing • Having previous experience working with neutron detector systems is a merit • Good written and oral communication skills in English • Minimum age 18 years. We believe that you enjoy communicating and collaborating with a variety of people in an international environment. You are good at taking initiative and not afraid to ask questions. Duration and location This is a summer work position of 3 months.  Planned start date is June 1st, 2026 or per agreement. Your workplace is on-site at ESS in Lund, Sweden.  How to apply Please provide your CV in English by clicking on “apply” and following the instructions. Please note that we only accept applications via the ESS website. The last day to apply is 12th of April, 2026. Certain roles at ESS require health and safety and/or security checks, which may be carried out during the recruitment process.   For further information regarding the position, please contact Recruiting Manager Chung-Chuan Lai at chung-chuan.lai@ess.eu For trade union information, please contact Unionen representative Nerusha Naicker on Nerusha.Naicker@ess.eu or SACO/Swedish Association of Graduate Engineers representative Marc Kickulies at marc.kickulies@ess.eu  We look forward to receiving your application!