[gatorcode]

I’ve been in your shoes. I found three options to work (in worst to best order): 1) I become an “overnight expert” at the expense of my work life balance and frankly the system architecture long term 2) Pushed back on management with tangible risks: a rough estimate to implement is XX and we are not confident in the solution so that could result in rework cost or worse long term scalability/maintenance cost. We propose outside (could be another expert on another team) consultation to close the risk gap. 3) We need to reassign resource X who is our most knowledgeable in adjacent tech, this takes them off feature Y and we will do a spike of duration Z to verify our approach.

When you do #3 enough your management will appreciate you using existing resources, providing the trade-offs, and you will also up skill that person.