Code freeze is coming up next week so everyone is scrambling to ship their diffs in right now. However I am facing a hard technical blocker which can be resolved by a coworker on another team, but he’s too busy with his own diffs to help out. I am unable to reproduce or debug this issue myself as it involves some highly technical details about how a proprietary mobile framework (Bloks) interacts and compiles down to the Android native fragments, and I have minimal experience with either. The coworker wrote that specific part of the Bloks framework and no one else seems to understand it (even the Bloks on-call couldn’t figure it out). What can I do at this point?
Okay, given that you're working with Bloks, I'm 99% sure I know which Big Tech company you're at 😉. Here's my advice for resolving this issue:
The good thing is that all of these methods can be run in parallel. If your manager is down to help, it will take some time for them to get the approval (or rejection). After you make a Workplace post, it will take some time for people to respond. Pinging people that you find from #2 will also take some time as they need time to read the messages and reply back. When it comes to tough problems like these, it's important to take as many bets as you can and hope 1 of them pays off.
Best of luck!