Outside General Counsel
01From IP cleanup to customer MSAs, Mateo serves as your fractional in-house lawyer on a flat monthly retainer — no hourly surprises, no Latham senior associate billing you to read your own cap table.
Learn More →San Francisco Outside General Counsel
Your First Year of Counsel. Clearly Scoped. Calmly Closed.
Mateo is a former Wachtell M&A associate now serving as fractional outside general counsel for Series Seed–Series B technology founders. He drafts the assignment, negotiates the MSA, and prepares the diligence binder — with every matter tracked in a private founder-side portal.
40+
Founder Engagements
Series B
Diligence Pre-Built
6 yrs
Wachtell M&A Background
CA Bar
#312587
Meet Mateo
“A founder’s first year of outside counsel should feel like the lawyer is sitting on your side of the table — not billing you to read your own cap table back to you. I write the engagement letter so you can read it. I scope what’s NOT in scope. And I tell you the truth about what a Series B diligence binder actually has to look like.”
Mateo Calderón, JD
Outside General Counsel · CA Bar #312587 · NY Bar #5641278 · Serving founders since 2022
How I Can Help
Built Around Series Seed–Series B Tech Founders
Series B Diligence Prep
02Three quarters before you raise, Mateo pre-builds the diligence binder — cap table, IP chain of title, customer contract index, employment census — so investor counsel finds nothing that scares them.
Learn More →Founder Strategy Sessions
03Not ready to engage yet? Start with a 60-minute strategy call: cap table sanity-check, IP posture review, employment classification audit, and an honest picture of what the next four quarters of legal work look like.
Learn More →Why It Matters
A Lawyer Who Reads the Term Sheet Before You Ask
Before solo practice, Mateo spent six years at Wachtell Lipton on cross-border M&A and venture financings. That background shows up in the way he negotiates indemnity caps, tracks every open item in your private portal, and writes engagement letters that actually scope what is and is not your lawyer’s job.
M+C
Founder Stories
“Mateo walked us through our first enterprise MSA line by line. We went from feeling out-lawyered to feeling like adults. By the third matter he was flagging issues in our cap table faster than our finance team.”Aniket Bhatt & Carolina Reyes · Helix Robotics
Ready to Scope Your Next Year of Counsel?
Engaging an outside GC is a long-arc decision. Let’s start with a 30-minute call about what your company actually needs.
Book a Free Consultation