About

I’m Sagi. I’ve been writing code since I was 12, and it’s been the through-line of my working life ever since.

My first job was at SHOPY, an early Israeli multi-tenant B2B2C e-commerce platform. I was the sole technical hire: 15 years old, self-taught after dropping out of school after 8th grade, and building and running the whole stack on bare-metal colocated servers back when “the cloud” wasn’t yet a thing. I spent almost eight years there learning how production systems actually behave when real people depend on them, usually at 3am.

In 2008 I joined MyHeritage as an engineer, and in 2011, at 25, I was appointed CTO. I’m currently transitioning out after a long run there. Over the years, I led the company’s migration from an on-prem data center to AWS and ran the team behind the matching and discovery stack as it scaled from hundreds of millions of profiles to tens of billions.

Alongside that, I’m building something new in cloud storage. More on that when there’s more to say.

I like problems where product logic meets scale: reliability, cost, performance, the slow work of making systems more efficient over time. I like code that earns its complexity. I like people who are direct. I don’t love meetings.

This site exists because I’ve noticed I think more clearly when I have to write something down for someone other than myself. If you read something here that lands, or something that’s wrong, I’d like to hear about it: [email protected].