There were other indicators as well. The office was in an old warehouse building on the waterfront of the city, with massive windows and high ceilings. I walked in to amazing water views from the lobby. When I descended one floor to the dev area, every single window was covered by a blackout curtain. It was a cave with no natural light, and barely any artificial light.

When I declined the offer, the recruiter was totally offended that I would pass up on such an opportunity.