Mobile Engineering Leadership at Scale: Lessons from Muzz and Flo Health
Explore how high-growth teams scale systems, orgs, and compliance—without breaking speed, trust, or resilience.
Date and time
Location
Vonage
3rd Floor, The Bonhill Building 15 Bonhill Street, London London EC2A 4DN United KingdomAbout this event
- Event lasts 3 hours
Scaling Mobile: Distinct Growth, Divergent Challenges
"77% of users drop off after just three days if performance falters." "Almost half abandon an app loading slower than two seconds."
Company Stats & Challenges
Muzz (Andrew Springham, CTO)
- Over 10 million users globally, with 500,000+ marriages facilitated
- Reaches 12 million Muslim members, and powers over half a million successful matches
- Building across different languages (10+), cultures, and regional privacy frameworks—balancing speed with flexibility across geographies.
Flo Health (Eugene Sergueev, Director of Engineering)
- Exceeded 380 million downloads, with 70 million monthly active users
- Recognised as the #1 OB-GYN-recommended health app and a femtech unicorn worth over $1 billion, with 5 million paying subscribers
- Scaling isn’t just about traffic—it’s also about real-time health data, privacy compliance across regions, and 24/7 uptime under sensitive usage.
What Each Speaker Will Unpack
Andrew Springham, CTO at Muzz - Leading global scale for a culturally nuanced dating app—managing internationalisation, data privacy, and performance tuning under multi-regional complexities.
Eugene Sergueev, Director of Engineering at Flo Health - How Flo Health serves 70M+ users with a privacy-first architecture that supports real-time health tracking and high-frequency product iteration. Eugene will go deep on backend-driven UI, data governance, and scaling engineering operations for always-on healthcare delivery.
Discussion Themes
- Scaling Patterns That Break
What works at 100k users can crumble at 10M—how these teams adapted architecture, process, and priorities.
- Global Performance Meets Local Law
From GDPR and HIPAA to regional language and privacy demands—what it takes to deliver fast, compliant apps worldwide.
- Scaling the Org, Not Just the App
Structuring engineering teams for speed, quality, and trust as user counts and complexity grow.
- Resilience at Scale
How to build for auto-scaling, fault tolerance, and graceful recovery when operating across geographies and high-stakes use cases.
Details
Speakers:
- Andrew Springham, CTO @ Muzz
- Eugene Sergueev, Director of Engineering @ Flo Health
Event:
- Held at Vonage’s offices on 31st July from 18:00
- Networking from 18:00-18:45
- Presentations start at 18:45
What You’ll Walk Away With
- Contextual scaling strategies, how dating vs health platforms differ.
- Real-world technical solutions for global traffic, privacy, and data operations.
- Organisational insights, growing mobile engineering teams while maintaining velocity and trust.
Sponsored by Novoda and Vonage
Novoda is a mobile engineering consultancy helping companies scale world-class apps. Vonage powers communications for apps used by millions every day.
Organised by RecWorks
RecWorks builds communities for CTOs, engineers, and future leaders—connecting talent, ideas, and opportunity across tech.
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