Summary
Okello Nelson is an engineering manager and founder with over a decade of experience designing and delivering fault-tolerant, event-driven systems, currently leading engineering at Reddit after a multi-year leadership tenure at Booking.com. He combines deep Java and system-design expertise with hands-on work in Scala, C#, Python, Flutter and Angular to solve large-scale reservation, payments and observability challenges. At Booking.com he led efforts that made order reservations scalable, automated application vulnerability tracking, and simplified partner invoicing and customer payments—demonstrating a pragmatic balance of architecture and product impact. Founder of Maishapay, he brings entrepreneurial insight into payment workflows and fintech integrations. Based in the Netherlands, he holds an M.Sc. in Computer Science and is drawn to roles spanning engineering management, principal development, and solutions architecture.
12 years of coding experience
14 years of employment as a software developer
B.Sc. Computer Science, B.Sc. Computer Science at Egerton University
M.Sc. Computer Science, M.Sc. Computer Science at University of Nairobi