XO Life, one of Europe’s leading digital health platforms, is pleased to announce the appointment of Sergey Vasilyev as its new Chief Technology Officer (CTO) as of June 2025.
Sergey brings extensive experience from the global health tech space. Prior to joining XO Life, he served as VP of Engineering at Flo Health, the world’s most downloaded women’s health app with over 80 million monthly active users. Since joining Flo in 2019, he played a critical role in scaling the company from a small team to a triple-digit workforce, helping it become the first femtech unicorn. In 2024, Flo closed a $200 million Series C round, and under Sergey’s leadership, the platform expanded globally while innovating in personalized content and data-driven user insights.
His expertise in scalable architecture, machine learning, big data, and international platform growth makes him a strong fit for XO Life’s mission. As CTO, he will lead the development and expansion of XO Life’s brite™ meta-platform, which delivers digital therapy and product support to patients across a broad spectrum of conditions.
“I joined XO Life because I believe in its potential to transform how patients are supported across treatments, medications, and health products,” says Vasilyev. “What Flo achieved in women’s health, XO Life can bring to the broader healthcare ecosystem — creating scalable, personalized support for millions.”
Dr. Friderike Bruchmann, Founder and CEO of XO Life, adds: “We’re thrilled to welcome Sergey to our leadership team. His experience in building globally scaled health platforms and personalized user experiences will help take XO Life to the next level. Together, we aim to make XO Life the leading digital companion for patients around the world.”
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