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Sebastian Alvarado

InvestorFounder

Senior Engineer, Financial Services at Shopify · Co-Founder (CTO) at Valari

Canada

FoundedValari · YC

Find your path to Sebastian

1,358 people in our graph share verified history with Sebastian — schools, employers, funds. One of them is your warm intro.

Aydin SenkutunlockedSebastian: together at Shopify (2025–2026)
×2Sebastian: together at Shopify
×9Sebastian: together at Y Combinator

About

Sebastian Alvarado holds a Computer Science degree with AI specialization from the University of Toronto and has spent over 7 years developing software in finance and technology. He was part of the founding team at Relay, where he contributed to growth that reached $20M in annual recurring revenue and 50,000 small business customers, and has worked at Shopify.

Co-Founder (CTO) at ValariYC W22

Intro paths

YC

Sebastian went through Y Combinator (Winter 2022) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Tom Blomfield, Monzo and GoCardless co-founder; Y Combinator partner on leave and Anthropic compute-team member. — the partner who ran Valari's batch and knows the company first-hand. YC profile ↗

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In turn, Sebastian can intro founders to Valari's investors below.

Valari's investors · 1

Y CombinatorSan Francisco · $500K checks · since 2022

Co-founders at Valari

APAlejandro Pozo
Alejandro PozoFounder

Experience

  1. ShopifySenior Engineer, Financial Servicescurrent2025 — presentToronto, Ontario, Canada
  2. Valari (YC W22)Co-Founder / Head of Engineering2022 — 2025Toronto, Ontario, Canada
  3. Relay FinancialSoftware Engineer2019 — 2022Toronto, Ontario, Canada
  4. IBMFull Stack Developer2017 — 2019Toronto, Ontario, Canada

Skills & more

Full-Stack DevelopmentEngineering ManagementData EngineeringProduct ManagementAndroid Development7E-commerce6Project Management1Customer Service1iOS Development2Start-ups1Data Analysis1Entrepreneurship1
+12 moreAgile MethodologiesExpress.jsArtificial Neural NetworksData ScienceSoftware EngineersPython (Programming Language)Amazon Web Services (AWS)JavaLeadershipSQLJavaScriptNode.js

Languages English · Spanish

  • IBM Bluemix Essentials — IBM
  • IB Diploma — International Baccalaureate

From Sebastian's professional profile.

Colleagues at Shopify

Chirag Patel
VP & GM Payments & Risk at Etsy at PICUS CAPITAL
Craig Soules
Founder/CEO at Natero
Gail Goodman
Special Advisor at Data Point Capital
Harley Finkelstein
Investor at Felicis Ventures
Jane Lee
Vice President at Sapphire Ventures
Jeremy Levine
Partner at Bessemer Venture Partners
Lauren Nemeth
Investor at Premji Invest
Levi Malott
Advisor and coach for startup tech leadership

Frequently asked questions

Who is Sebastian Alvarado?
Sebastian Alvarado holds a Computer Science degree with AI specialization from the University of Toronto and has spent over 7 years developing software in finance and technology. He was part of the founding team at Relay, where he contributed to growth that reached $20M in annual recurring revenue and 50,000 small business customers, and has worked at Shopify.
Where does Sebastian Alvarado work?
Sebastian Alvarado is Co-Founder (CTO) of Valari and Senior Engineer, Financial Services at Shopify.
What companies did Sebastian Alvarado found?
Sebastian Alvarado founded Valari.
Where did Sebastian Alvarado go to school?
Sebastian Alvarado studied at Y Combinator; University of Toronto (Bachelor of Science (B.S.), Computer Science - Artificial Intelligence Focus); Colegio Alberto Einstein (High School, Full IB Diploma).

Founder mafias

Same school

Shared employers

Also worked at Valari (YC W22)1

Alejandro PozoFounder at Valari