Matteo Salinas Back

About

How I got here.

It started because I wanted to buy something in a game and my dad said no. So I had to figure out how to make my own money.

01 Fourteen

I started buying and selling sneakers when I was fourteen. It reads like a hobby. The actual work was pricing, inventory, and working out which counterparty would actually pay, with my own money, before I could drive.

02 Sneaker Twitter

What I'd walked into was a market most people have never heard of: a few thousand serious participants worldwide, nearly all teenagers, building the infrastructure behind limited-release retail. Restock monitors, proxy networks, data services, paid information groups. All of it existed to save a customer a few hundred milliseconds at checkout, and customers paid a lot for that.

It had real price discovery. Software licenses traded on a secondary market at multiples of retail, and an exchange got built to clear those trades with escrow. Venture-backed founders and early employees at hypergrowth companies came out of the same Discords.

I ended up building inside it rather than buying from it: a subscription service I co-founded, and support and operations roles at three of the businesses other people ran.

03 What it taught me

That market repriced you in public every weekend. If your product underperformed on one release, members cancelled that night, not next quarter. I learned retention and incident response at an age when most of my friends had part-time jobs.

I also learned how to talk to people who outranked me. At fifteen I was working alongside adults who didn't care how old I was as long as I was useful. That's still the most valuable thing I took from it.

All of it ran alongside club and high school soccer: practice, a release at 10am on a Saturday, and a support queue that cared about neither.

04 Then code

Running services like those means eventually building them yourself. I taught myself HTML and CSS, then Python, Go, and Java, enough to ship and maintain the things subscribers were paying for. Some of my closest friendships came out of that stretch, with people I've still never met in person.

05 Kentucky

I went to the University of Kentucky in August 2023 for biomedical technology, aiming at medicine. It didn't last. What kept pulling at me was the market side. I was running an event-driven ticket book on the side, and it held my attention in a way the pre-med track never did.

06 Finance

So I switched to finance, and after three years at Kentucky I transferred to the University of Georgia in the fall of 2026, into the Terry College of Business, where I'm studying economics. FP&A in Singapore and equity research in Lexington while I was still at Kentucky, then private banking in Atlanta over the summer in between. The research side came naturally, because it used the same instinct as the sneaker work: understand what drives value, work out what other people are missing, and make a decision without complete information.

What I'm actually interested in is markets, geopolitics, and how capital moves around the world. You can't really follow one without ending up in the other two.

07 Now

I'm comfortable on the technical side, and I'll build the model or write the measure or automate the report if that's what the job needs. I'm also comfortable with people, which comes from selling things and dealing with customers since I was fourteen rather than from anything I studied.

What I'd like is work where those two aren't separate jobs. Somewhere I can do the analysis and then be in the room when it gets discussed.

The operating years

Four businesses between 2019 and 2022, alongside high school and club soccer. One was mine; I worked at the other three. The figures below belong to different companies, so each says which.

400+
Sensei subscribers at peak
95%
Sensei retention rate
$100K
Monthly revenue, proxy business
15
Sensei team managed
6,000+
Users on the largest platform
70%
Recurring questions removed, largest platform

Dec 2019 – Feb 2022

Sensei Notify Inc.

Co-Founder & Strategy Director

A subscription research platform built from nothing: market analysis, alerts and trend forecasting for the release market described above.

  • 400+ active subscribers on recurring billing, at a 95% retention rate.
  • Managed a team of 15, spread across time zones, most of whom I never met in person.
  • Owned customer acquisition, financial management and community end to end.

Feb 2021 – Aug 2021

A proxy infrastructure business

Customer Support Specialist → Operations Manager

Started on the support queue and moved into running operations two months later.

  • Two of us ran it, me and the owner, against $100,000 in monthly revenue.
  • Ran the support queue to a same-day standard, then wrote the procedures it ran on after I moved into operations.

Aug 2020 – Feb 2021

A high-volume checkout-automation platform

Technical Support Staff

Front-line and escalation support, at the largest scale I worked at. Seven people in the company, and support ran through me: live, in chat, while releases were happening, not a queue somebody worked through the next morning.

  • 6,000+ users on a platform carrying $10M+ in annual transactions.
  • Worked with the developers on the failures causing the most downtime, and wrote the documentation that removed 70% of the questions that kept coming back.

Feb 2021 – Jul 2021

A checkout-automation platform

Technical Support Staff

Release-day support, under a clock, at a five-person company.

  • Supported 5,000+ transactions, focused on system reliability and customer experience.
  • Wrote the onboarding materials, which took work off the queue by getting new customers running without needing it.

What I can do

Valuation 6

DCF · Comparable companies · Precedent transactions · Scenario modeling · WACC · Football-field valuation

Wealth 5

Private wealth management · Portfolio analysis · Tax-efficient strategies · Estate planning concepts · Net worth statements

FP&A 5

Monthly forecasting · Variance analysis · Management reporting · Sales & margin analysis · GL reconciliation

Data 7

Excel (financial modeling, scenario analysis, PivotTables, advanced lookups) · Power BI · DAX · Power Query · SQL · Bloomberg Terminal · Salesforce & CRM

AI 4

AI workflow development · Anthropic Claude API integration · Prompt design · Research automation

Code 4

Python · Go · Java · HTML & CSS

Client & Commercial 4

Client relationship management · Business development · Prospect research · Negotiation

Operating 5

Subscription retention · Support operations · Incident response · Distributed teams · Technical documentation

Languages 2

English · Spanish

Outside work 4

Soccer · Golf · Geopolitics · History