what is a bkm best known method

BKM = Best Known Method. It is the single best, proven way to do a task, written down so anyone can repeat it. The whole point of a BKM is to kill 'tribal knowledge' — the situation where the answer lives in one person's head and the team suffers when they leave. A GPS engineer's core job is turning hard-won fixes into BKMs. WHY IT MATTERS: a fix you can't teach is a fix you haven't finished. Your story: at Onto you documented a reference-standard calibration that improved GCMS cleanliness test accuracy — that is literally a BKM. Use that as your example. When asked 'what separates a good engineer from a GPS engineer,' the answer is: GPS engineers convert fixes into repeatable, documented, teachable processes.