alex lazar_
Product-focused engineer — 7 years building for early-stage startups, lately all-in on AI/LLM work. More about me →
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Let's wrap up 2025
A lot of things happened this year. I'll try to extract some lessons from it all here.
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External calls are dangerous
This is an attempt at outlining an exhaustive list of external call footguns in Solana programs with some Solidity counterparts for people that come from that world.
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The hardest part about auditing is...
After almost 3 years of coquetting with the idea of auditing, I finally did my first audit. Found 1H and 1M too. What stopped me for so long?
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It's been a month...
It's been a little over a month since I last gave you an update and I'm back. Let's talk events in my life, my newfound love for Rust, why prediction markets are actually not a great business and why EV doesn't tell the whole story.
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Building something I own
The motivation behind this newsletter, what it is going to be about, a short about me and various updates from the past ~6 months of my life.