Mark Faga

Boston, MA

Mark Faga

Principal engineer and founder

I ship software. Two decades of it, from UI to data infrastructure.

Full-stack principal engineer who moves fluently across frontend, APIs, and data infrastructure, with two decades of shipping production software. Founded Wayfair’s GraphQL platform, now serving billions of requests a day. Co-founded Via AI, where I built a data platform resolving 100M+ profiles and nearly a trillion relationship edges in under 5 hours, plus an agentic system that coordinates AI coding agents across the team. I run Faga Labs, a principal engineering studio. I treat AI as architecture: agents, MCP integrations, and LLM triage are core primitives.

Now

Now

Faga Labs

Founder, Principal Engineer

Faga Labs is my company. My principal engineering studio.

Since Jan 2026

Via AI

Co-Founder / Engineer

Relationship intelligence platform that finds warm introduction paths to people and companies.

Since Aug 2025

TruFit Talent

Fractional CTO, part-time

Unbiased, AI-based simulation assessments for recruiting.

Since May 2026

TBD Angels

Member

A Boston angel group. If you are a founder raising capital, I am glad to connect you with the group.

Massachusetts AI Coalition

Angel pledge signer

The Massachusetts AI angel investor community supporting local founders.

Highlights

Highlights

  • 100M+ profiles in under 5 hoursVia AI, Aug 2025 – Present
  • $700M ARRHunt Club, Mar 2023 – Jun 2025
  • Billions of requests a dayWayfair, May 2019 – Mar 2023
  • $10M estimated annual savingsezCater, Jan 2017 – Apr 2019