A New York City software engineer has built a lucrative side business, Goodhart Dog Co., earning over $6,000 monthly by offering premium pet-care services. Coby Goodhart meticulously schedules dog walks, training sessions, and client meetings around his full-time tech job, leveraging word-of-mouth and strategic networking to grow his luxury venture.

Goodhart said that his dog walking business “brings in north of six figures.”

A New York City software engineer has built a lucrative side business, Goodhart Dog Co., earning over $6,000 monthly by offering premium pet-care services. Coby Goodhart…