Startup founder, software engineer, sometimes runner.

👋 I'm Rareș, a software engineer and entrepreneur based in New York. Most recently, I co-founded Contour Care, which we sold back into Commure. These days, I'm building developer productivity tools and software for real estate agents and the New York City rental market. When I'm not building products, you'll find me tinkering with robotics, embedded systems, or planning my next summit.

Reliable JSON from Cheaper LLMs

June 9, 2026

How plain JSON, Zod validation, and a repair loop let Gemini 3.1 Flash-Lite run 80% cheaper and 2× faster than our Claude Haiku baseline.

Build the Feedback Loop First

June 5, 2026

Retrofitting CI, linting, Prettier, and regression tests into a mature codebase makes AI coding useful by catching broken changes before reviewers do.

When Google Should Supply the Place Data, but Not the UI

June 4, 2026

Google’s default Places widget breaks out of your existing mobile UI, so a custom autocomplete keeps the form flow intact while Google still supplies the place data.

When a Mac App Can't Find a CLI Your Terminal Can Run

June 3, 2026

How to fix a macOS GUI app that cannot find `codex` even though Terminal can: inspect the live `PATH` and fix `launchd`, not the shell.

Work

Company
Contour Health
Role
Co-Founder & CTO
Date
May 2023 2026
Description
Co-founded Contour Health, later evolved into Contour Care, and led engineering through the company’s sale back into Commure.
Company
Assort Health
Role
Founding Engineer
Date
Jan 2023 Apr 2023
Description
Built backend core and Epic EHR integrations for AI healthcare platform (later raised $76M Series B).
Company
Athelas
Role
Sr. Software Engineer
Date
Apr 2021 Jan 2023
Description
Led development of the first FDA-cleared at-home CBC, plus RPM tools and billing / reconciliation.
Company
Uber
Role
Software Engineer II
Date
Sep 2019 Apr 2021
Description
Built real-time fraud detection and payment systems processing millions of transactions daily.
Company
Level Home
Role
Firmware Engineer
Date
Jan 2018 Apr 2018
Description
Achieved 1+ year battery life for smart deadbolt through ultra-low power optimization.
Company
Tesla
Role
Systems Integration
Date
Sep 2016 Aug 2017
Description
Developed firmware for Model 3 security systems. Built testing infrastructure for production ramp.
Company
FleetCarma (Geotab)
Role
Embedded Developer
Date
Jan 2016 Apr 2016
Description
Reduced GPS fix time from 27s to <4s for EV fleet telemetry devices.

Download CV