Developing a warehouse management system for one of the biggest companies in the textile industry, world-wide: - project kick-off with a team of 10 junior developers - working under pressure for 3 years in a row - avoiding office politics - without support from IT staff, my bosses, the client or any other one except our development team - integrating factory hardware with our own multithreaded applications

The most important lesson I've learned: for software and tech development, people comes first. Always.