Lilja is currently the head of one of the supervisory departments at the Health and Social Care Inspectorate. He has previously held leading positions within Region Jönköping, including as operations manager for ambulance services and as section and preparedness manager.
FIHM is an independent supervisory function within the Swedish Armed Forces and is responsible for oversight in areas such as environmental and health protection, infection control, food safety, animal protection, and healthcare. The supervisory responsibility also includes certain activities at the Swedish Fortifications Agency, the Swedish Defence Materiel Administration, and the National Defence Radio Establishment.