Full-stack product engineer. Former Lead Engineer at Cal.com, where I spent four years shipping the open-source scheduling platform from early stage to scale. Today I'm CTO at Solayre, building the software and AI agents that run a solar installation company.
Source: GitHub contributors API and search, October 2026.
Cal.com · Lead Engineer · 2021–2025
Joined as one of the first engineers and stayed through the company's growth. Worked across the whole stack: architecture, platform, performance, infrastructure and developer experience.
01Monorepo & tRPC migration — Moved the codebase into a Turborepo monorepo and migrated the legacy API endpoints to shared tRPC packages. #3484
02Open-sourced the public API — Brought the private public-API repository into the open-source monorepo and kept it building alongside the web app. commit c610fad
03Calendar Cache — Cached Google Calendar availability and kept it fresh with push webhooks, cutting calls to Google on every booking page load. #11185
04Tasker — Built the background task queue used for deferred and retryable work like webhooks and emails. #14180
05Watchlist — Abuse-prevention system to flag and block bad actors by email and domain. #17947
06Feature flags — Per-user and per-team feature flags, later centralized in a single repository layer. #16040
07Billing service — Refactored Stripe billing into a dedicated service; added automatic payment methods for paid bookings. #15366
08Observability — Tracing and error reporting across API v1, the web app and integrations like Google Calendar and Salesforce. #20302
09Database & framework upgrades — Led Prisma upgrades from v4 to v6, set up Prisma Accelerate, and migrated to the Next.js App Router hooks. #11324
10Testing & CI — Parallel E2E runs, published Playwright reports, required API build checks and safe gradual-migration deploys. #16179
Solayre · CTO · 2025–present
Solayre designs and installs solar systems in Mexico. I built its software end to end.
01Solar ROI calculator — Savings calculator that generates the customer's PDF quote. React, Vite, Supabase. calculadora.solayre.mx
02Dynamic quotes — Server-rendered, always-current quotes read straight from the database. Next.js. q.solayre.mx
03WhatsApp AI agents — Agents that qualify inbound leads and hand them to a human seller, plus an internal coworker agent for operations. Built on a fork of OpenClaw with custom plugins.
04Internal tooling — MCP servers that let agents work with the Mexican tax authority (SAT), the ERP, and drone photogrammetry (WebODM); a CardDAV customer directory; a 3D PV array designer in Three.js.
05Marketing site — Public site that feeds the calculator. solayre.mx
Open source
01ralph — Suite of autonomous agents that orchestrate Claude CLI for backlog-driven software delivery. github.com/zomars/ralph
02CFE API — Self-serve API that turns Mexican electricity bills (CFE) into structured JSON. cfe-api.fly.dev
03eSCL scanning stack — Merged fixes and features in NAPS2, SwiftESCL and OpenAirScan for network scanning interoperability. NAPS2, SwiftESCL, OpenAirScan
04Steam Deck plugins — Audio Output Switcher for Decky Loader, plus contributions to decky-nexus. audio-output-switcher