I learnt many skills all my 12 years of working there from a technician's point of job to an engineer-in-charge's point of job. I managed a team of 10 over technicians and delegated jobs as a team leader everyday. I performed various tasks as an Engineer-in-charge ranging from Inspections, Modifications, Troubleshooting and Tests.
I had no work life balance but there is job security. Worked long hours 7 days a week at times.