Hi there, we're Corbado.

Kostas was previously CTO & Executive Board Member at CHECK24, Europe's largest comparison platform, where he helped scale the engineering team from 50 to over a thousand developers. He has deep experience building high-traffic systems - including authentication systems that handle +5,000 requests per second. He's also co-founded & exited two software companies, rapidmail (B2B SaaS) & rapidsoft (software technology). At Corbado, he brings this experience to shaping long-term technical direction & product innovation. Kostas is an active angel investor & advisor to digital companies.

Stefan shares a +20-years professional journey with Kostas, including co-founding roles at rapidmail and rapidsoft and serving as Co-CTO at CHECK24. There, he helped build new development hubs and offices across Germany while scaling backend systems to support millions of users. A seasoned backend engineer and Golang expert, Stefan remains hands-on and is closely involved in shaping Corbado's technical architecture to ensure it remains secure, reliable and adaptable. He's also an active angel investor.

Martin is an extremely broad software engineer with experience at both BMW and CHECK24. As a graduate of Bavaria's Elite Academy, he's known for his technical versatility across frontend, backend, native apps and infrastructure. Martin brings deep expertise in multiple programming languages. At Corbado, he focuses on building secure, high-performance authentication cloud-native solutions from the ground up.

Vincent brings a hybrid background in technology and business, shaped by roles in consulting (BCG, KPMG) and hands-on software development. He led a student consultancy during his studies and worked as a software engineer in the US. At Corbado, he focuses on sales, marketing and growth, drawing on his consulting experience and technical foundation to bridge business strategy with enterprise technical needs.