Preston Schmittou is Co-Founder at Haladir, an AI-powered mainframe modernization platform that transforms legacy COBOL systems for enterprises. The company is part of Y Combinator's Winter 2026 batch and has raised funding from Y Combinator and Susa Ventures.

Preston is a student at UVA Wise, where he has been developing his technical expertise. He co-founded Haladir in 2025 alongside Jibran Hutchins, Quan Huynh, and Joseph Tso.

Preston is building AI infrastructure for verifiable domains, enabling reinforcement learning to scale beyond boutique environments toward continuous self-improvement. Haladir's platform generates comprehensive documentation from COBOL codebases and migrates legacy code to modern languages.

Haladir completed Y Combinator's Winter 2026 batch and is based in San Francisco with a team of 4 employees. The company has developed both documentation and translation tools that use formal verification and property-based testing.

Haladir helps enterprises understand millions of lines of legacy code without months of manual analysis. The platform preserves business logic while modernizing critical infrastructure systems used by major organizations.