DevFest

Rowdy Rabouw is a Google Developer Expert in Web Technologies with over 25 years of experience in HTML, CSS and JavaScript. Currently, he works as a Front-End-Focused Senior DevOps Engineer on Vue, Node and NestJS projects, paying special attention to usability and accessibility. Rowdy loves his electronic drum kit and dabbles creating music on his laptop.

Patty O’Callaghan is a seasoned technology leader and AI strategist. She is a member of the Google Developer Advisory Board, A frequent keynote speaker and advocate for diversity in tech. Patty is passionate about mentorship, AI ethics, and empowering women in technology. She has been recognized as a Most Active Speaker (2023 & 2024) on Sessionize and was twice nominated for Inspirational Woman of the Year at the Scotland Women in Technology Awards.

Vadym is a London-based mobile engineer and GDE for Flutter & Dart with 11+ years’ experience across Android and cross-platform development. At Sky, he builds platform-agnostic solutions that deliver polished, high-impact user experiences; previously at Instagram (Meta) he shipped creator-focused features at scale and contributed to architecture and design-system initiatives. A regular on the conference circuit (Fluttercon, droidcon, FlutterConf LATAM, DevCon), Vadym is an active community mentor (GDG Academy) and a UK Global Talent Visa holder.

Vasudev Maduri is a GDE (Cloud & AI) and Staff Data Engineer at Admiral Group. He builds large-scale data + ML platforms on GCP, speaks globally on architecture and MLOps, and mentors the community through GDE Academy and Google for Startups Accelerator.