Junior engineers and PMs need the software to have a skeletal structure on which they can hang their features. This skeletal structure has to be put together by

Junior engineers and PMs need the software to have a skeletal structure on which they can hang their features. This skeletal structure has to be put together by the lead engineer and lead PM. Usually I see both PMs and engineers churning with bad design when such a clarifying structure is missing or ill-defined or has become broken due to hard pivots in pursuit of business/product-market fit.