Gabriel Kalejaiye

Gabriel Bayomi Tinoco Kalejaiye is a Brazilian-born engineer and entrepreneur who co-founded Openlayer, a San Francisco-based AI governance and observability platform. After earning his MS in Computer Science from Carnegie Mellon and working as a Machine Learning Engineer at Apple - where he contributed to both Siri and the secretive Vision Pro project - he left with two colleagues to solve the problem that haunted every AI team: models that look great in testing but fail in the real world. Openlayer provides enterprises with evaluation, monitoring, and compliance tooling across the full AI lifecycle, from prototype to production. The company raised a $14.5M Series A in May 2025, grew nearly 5x in 2024, and is now a recognized vendor in Gartner's 2026 Market Guide for AI Evaluation and Observability Platforms.