
Leo Vaychik
Open to workSystems & Data Engineer
I architect data & compute systems around hard constraints — so they run reliably without perpetual firefighting.
I love the craftsmanship of complex machinery, but what drives me is the real-world utility it unlocks. Designing a hydroelectric plant is fascinating, but what people actually need is heat in their homes.
My approach is straightforward: I map system constraints before writing a single line of code. Systems need universal scaling rules built in — giving them the foundation to evolve naturally over time without collapsing into chaos.
- 7+
- yrs · Data & MLOps Infra
- 150+
- Engineers · mentored
- 5–10×
- avg · pipeline acceleration
Projects & Artifacts

Local-first résumé workbench: native GPUI + Typst compiler, offline TOML vault & win diary.

Python migration runtime tracing & behavioral diff engine for zero-breakage upgrades.

Mathematical exploration with simulations

Autonomous hybrid airship HAPS — sensor fusion, telemetry, control systems.
Articles & Essays
View all articlesVersion migration is not a version bump — it's a research project.
Stop throwing locked suitcases of jargon at people and learn to speak human.
From those who guided me to those I guide — what real mentorship looks like.
Digital systems constantly change — modeling helps predict when they'll become unstable.