Sergey Gerasimenko
Chief Technology Officer at MongoDB Inc
Zug, Zug, Switzerland
Summary
🤩
Rockstar🎓
Top SchoolSergey Gerasimenko is a seasoned CTO and product-and-technology leader with 11+ years transforming distributed engineering organizations and shipping cloud-native database and AI-ready platforms at scale. He has led major turnarounds and post-acquisition integrations—most notably migrating Realm into MongoDB Atlas and pivoting CrateDB to a multi-cloud analytics and AI developer stack—while growing teams and revenue without sacrificing engineering efficiency. Sergey excels at "engine swaps while flying": designing organizational operating systems, standardizing cross-border OKRs, and increasing output-per-engineer through architecture, AI tooling, and FinOps. His work spans startups to public and PE-backed companies, with hands-on product, security compliance (SOC 2, HIPAA, ISO 27001), and marketplace launches across AWS, Azure, and GCP. Based in Switzerland with a Finnish passport, he uniquely bridges US-headquartered strategy and high-density European engineering hubs, and he measures success by the leaders he develops—many of whom are now VPs and CTOs. Outside work he’s a father of three who enjoys fixing stalled roadmaps and turning deep tech into repeatable commercial outcomes.
11 years of coding experience
14 years of employment as a software developer
MSc, Computer Science (Mobile Computing, Services and Security), MSc, Computer Science (Mobile Computing, Services and Security) at Aalto UniversityBSc, Computer Engineering (Networks and automation systems), BSc, Computer Engineering (Networks and automation systems) at Southern Federal University (former Rostov State University)
English, Russian, Finnish, Swedish, German
Stackoverflow
36reputation
425reached
1answer
0questions
Github Skills (75)
postgresql10
realtime10
realm10
nosql-database10
cpp10
reactive10
cratedb10
dotnet10
sql10
swift10
realtime-database10
database10
lucene10
sqlite10
mobile-first10
Programming languages (12)
Github contributions (5)
geragray/nsc-cashflow
Mar 2015 - Apr 2015
Contributions:9 pushes in 20 days
geragray/awesome
May 2024 - May 2024
😎 Awesome lists about all kinds of interesting topics
Contributions:1 push in 1 day
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