I was the sole senior product designer and, with no PM, the product lead in practice, working with two engineers across versions 3 through 5. The hard part was serving two opposite users at once: non-technical writers who needed spatial clarity and low cognitive load, and technical QA and engineering who needed to validate branching logic and trust the data.
Original bootstrap style.
Original logic layout that I inherited.
Path saving made it easy to test and debug interactive logic.