Fundraising Fox

Maciej Szymczyk

Founder

Founder at SalesPatriot

San Francisco, California, United States

FoundedSalesPatriot · YC

About

Maciej studied electrical engineering, computer science, business administration, and mathematics at UC Berkeley. Before college, he conducted machine learning research at the Human Brain Project and worked on data and AI algorithms at InPost.

LinkedIn ↗X / Twitter ↗
Latest on 𝕏

Maciej Szymczyk @szymczyk06

This is possibly the most important lesson from starting a company. You can literally just do things. https://t.co/FbhyRGjNF1

Jul 14, 2026 · ♥ 9

Maciej Szymczyk @szymczyk06

This mindset is even more common in Europe. Anti-growth brain virus paradoxically hurts most the ones who protest it the loudest. https://t.co/WxhOCpWijP

Jul 10, 2026 · ♥ 5 · ⇄ 1

Maciej Szymczyk @szymczyk06

Tak i nie. Matura z matematyki w PL trzyma poziom, a odejście w stronę „analizy danych” czy „kompetencji przyszłości” kończy się taką farsą jak SAT w Stanach. Najlepszym co możemy zrobić to nie dotykać matury z matematyki. https://t.co/reXuJ2RYHx

Jul 8, 2026 · ♥ 14

Founder at SalesPatriotYC W25

Intro paths

YC

Maciej went through Y Combinator (Winter 2025) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Jared Friedman, General Partner at Y Combinator — the partner who ran SalesPatriot's batch and knows the company first-hand. YC profile ↗

→

In turn, Maciej can intro founders to SalesPatriot's investors below.

SalesPatriot's investors · 3

CRV (Charles River Ventures)Link VenturesY Combinator

Co-founders at SalesPatriot

NRNelson Ray
Nelson RayFounder
BRBen Rhodes-Kropf
Ben Rhodes-KropfFounder

Experience

  1. SalesPatriot (YC W25)Co-Foundercurrent2024 — presentSan Francisco, CA
  2. TensorCellMachine Learning Researcher2022 — 2024Warsaw
  3. CMSCorporate Law Intern2024Warsaw
  4. InPostData Science Intern2024Warsaw, Mazowieckie, Poland
  5. Gazeta Giełdy i Inwestorów „Parkiet”Writer2022 — 2023
  6. INS - Institut de Neurosciences des SystèmesVisiting Research Intern2023Marseille, Provence-Alpes-Côte d’Azur, France
  7. Proteon PharmaceuticalsBioinformatics Researcher2023Łódź
  8. ClimaticaData Science Intern2022Warsaw, Mazowieckie, Poland

Education

  1. UC Berkeley Management, Entrepreneurship, & Technology (M.E.T.) programBachelor of Science - BS, Triple major in Electrical Engineering & Computer Science2024 — 2028
  2. Y Combinator
  3. University of California, Berkeley, Haas School of BusinessBachelor of Science - BS, Business Administration2024 — 2028
  4. UC Berkeley College of EngineeringBachelor of Science - BS, Electrical Engineering & Computer Science2024 — 2028
  5. International BaccalaureateIB Diploma Programme at 2SLO High School in Poland2020 — 2024

Skills & more

Start-up Leadership1Machine Learning1Start-upsComputational NeuroscienceSoftware DesignProgrammingData StructuresPrivate EquityCorporate LawCorporate FinanceMergers & Acquisitions (M&A)FinTech
+12 moreTechnological InnovationBioinformaticsMedical DevicesOperationsFinancial AnalysisOperational EfficiencyDigital HealthEconomicsAnalytical SkillsOrganization SkillsWritingProblem Solving

Languages English · French · Polish · Spanish

From Maciej's professional profile.

Same school

Also attended UC Berkeley Management, Entrepreneurship, & Technology (M.E.T.) program4

HariFellow at Clear VenturesTom SpringerAssociate at Ibex InvestorsAditya GanapathiFounder at CoraNelson RayFounder at SalesPatriot

Also attended Y Combinator1,463

Akshat GoenkaInvestor at Moonfire VenturesJon XuGeneral Partner at Y CombinatorTed ChaiAssociate at Scale Venture PartnersLeo LuInvestor at Foundation CapitalMaroof AhmedFounder at Octopus VenturesYusuf SherwaniCo-Founder and CEO at Pelago; a Londoner living in New York City

+ 1,457 more

Also attended UC Berkeley College of Engineering29

HariFellow at Clear VenturesAlejandro GomezInvestor at IVP (Institutional Venture Partners)Alpin YukselogluPartner, Investing & Research at ParadigmDivyansh SaksenaAnalyst at Congruent VenturesEdward YangSenior Associate at Prelude VenturesLan WuAnalyst at Fusion

+ 23 more

Also attended International Baccalaureate52

AlptugInvestment Team at Hummingbird VenturesDanny EdmanInvestor at Alpha PartnersHari GopalDirector of Corporate Insights at Tech Square VenturesEdward YangSenior Associate at Prelude VenturesArmita HosseiniVenture Fellow at Leonis CapitalSara JawadInvestor at Industrifonden

+ 46 more

Shared employers

Also worked at SalesPatriot (YC W25)2

Boaz FachlerManaging Director at Link VenturesNelson RayFounder at SalesPatriot

Also worked at CMS2

Dennis de BreijAdvisor at Curiosity VCDelphine LouisLegal Counsel at Finance.Brussels

Also worked at InPost1

Katarzyna BarInvestor at Expeditions

Also worked at Gazeta Giełdy i Inwestorów „Parkiet”1

Grzegorz WachCountry Director at NESsT