Parallax

Parallax is a hardware startup founded by Carl Schoeller, a second-time founder whose previous company Theseus (defense-tech) went through YC S24. The company is building full-scale gas turbines to meet the massive power demand from hyperscalers, targeting a ~$1T addressable market as data center operators have publicly requested ~1 TW of new power by end of decade. Parallax raised $8M in pre-seed funding in 2024 and is scaling aggressively — hiring 30 mechanical and turbomachinery engineers with a goal of completing a full-scale gas turbine prototype by end of 2027. Early hires include 2 ex-SpaceX engineers and 1 ex-Pratt & Whitney engineer with 5 years there who previously founded his own turbine company.