Mark Tsimelzon

Mark Tsimelzon is a seasoned technology executive currently serving as the Director of Engineering at Meta (formerly Facebook), specifically for WhatsApp.12 He is based in London, UK, where he oversees the WhatsApp London Engineering site, managing a team of approximately 300 professionals.

Career Highlights

Meta (Facebook): Tsimelzon joined Meta in May 2019 to help build out the WhatsApp London team.1 His role involves ensuring integrity on the platform and leading engineering efforts for WhatsApp in London.

Babylon Health: Prior to Meta, Tsimelzon served as the Chief Engineering Officer at Babylon Health from 2017 to 2019.1 During his tenure, he scaled the engineering organization to over 300 people.1

Previous Experience: Tsimelzon has over 10 years of experience running AI/ML projects, including work at Syapse and other companies.2

Education and Background

Mark Tsimelzon holds a degree from the Massachusetts Institute of Technology (MIT).24 Before moving to the UK in 2017, he lived in Silicon Valley for 20 years.1

Professional Insights

Tsimelzon has shared his experiences transitioning from the US to the UK tech scene, noting differences in work culture, hiring practices, and the tech talent pool. He emphasizes the value of international experience in broadening perspectives on global opportunities in the tech industry.1

On professional networking platforms, Mark Tsimelzon can be found on LinkedIn under the username "marktsimelzon"2, and he is also active on Twitter (@marktsimelzon).3