InterLogic LLC

Consulting firms in New York tend to cluster downtown, but the Upper East Side still holds a few quiet operators who handle the less flashy side of business tech. InterLogic LLC fits that mold—specializing in systems integration, workflow automation, and compliance mapping for companies that need their software stacks to actually talk to each other. Most clients are mid-market firms that have outgrown spreadsheets but aren’t ready for enterprise-scale ERP.

The office sits at 401 E 84th St, a stretch of pre-war walk-ups where the doormen know every tenant by name. The block itself is more functional than fashionable; you’ll pass a dry cleaner, a bodega, and a shuttered video store before you reach the buzzer. Because the building lacks a front desk, it’s worth calling ahead—(646) 418-7164—to confirm which suite number to punch in.

Directions are easiest via the map; the Q train stops two avenues west, and the crosstown bus runs right past the door. If you’re hauling a laptop or a stack of process diagrams, the elevator is slow but reliable. Bring a notebook—these conversations usually uncover more questions than answers.