StackFuel

StackFuel (operating at stackfuel.com) is a vocational training platform engineered for bridging skill gaps in the data and AI sectors. Founded in 2016 by Stefan Berntheisel and Leo Marose, and headquartered in Berlin, Germany, StackFuel specializes in enabling career transitions into data-driven roles through subsidized, expert-led online education. Unlike traditional academic programs, it focuses on practical, job-ready training—delivered via interactive courses, mentorship, and full or partial funding via education vouchers or wage subsidies. This allows jobseekers, career changers, and even employees to reskill without financial barriers, aligning workforce development with industry demand. Backed by a total of $614K across five funding rounds, including grants and investments from Wayra and Tenity, StackFuel operates at the intersection of edtech and upskilling.