When I joined, it was running really like an academic center. Like literally in my lab, if I wanted to go into the lab and pipet and do library prep, the wet lab scientist would teach me and vice versa. It was lit. a place where anybody could pivot their career to anything. We worked on NIAID/NIH grants and went to conferences even as SWE's and I felt we were doin' important research - not just pipeline monkeys but actually performed important analysis like RNASeq differential analysis, ChIPSeq peak calling, metagenomics etc. on publications along with PhD scientists even if I didn't have the academic credentials. Groups within the Broad was running courses for Software Engineers to learn Biology... and you could literally take off middle of day to go across the street to Stata Center to attend lectures on ML or audit Comp Bio at MIT. Nobody would bat an eye. 75% of my group got a Masters degree on the job where we spent more time some months on classes than actual work.
The culture somewhere shifted around 2018-2019... where they brought in new management to run DSP (Data Science Platform where most SWE's likely end up). The DSP management (not the chief guy) but lieutenants ran the "tech playbook"... get PM, Scrum/Agile coaches in; make software and comp biologists line workers.A lot of my fav. people either left or got pushed out. A lot of intuitional knowledge about sequencing and biology got lost, self-driven people left and line workers to work on Portal web development and Data pipeline management came in. To the point where I presented once to the software engineers of DSP and nobody in the room even knew the basic's like what is a long or short reads is. I left soon afterwards to a place where I wouldn't be silo'd. I wouldn't recommend the Broad to anybody now... unless you're working for an academic group. Avoid platform groups (DSP mostly; other platforms are still good) if you want to learn & grow.