Maciej Szymczyk
FounderFounder at SalesPatriot
San Francisco, California, United States
FoundedSalesPatriot · YC
Find your path to Maciej
1,295 people in our graph share verified history with Maciej — schools, employers, funds. One of them is your warm intro.
Garry TanunlockedMaciej: together at Y Combinator (2025)
×8Maciej: together at Y Combinator
Maciej: together at UC Berkeley College of Engineering
×2Maciej: together at International Baccalaureate
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.
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, YC Group Partner — the partner who ran SalesPatriot's batch and knows the company first-hand. YC profile ↗
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In turn, Maciej can intro founders to SalesPatriot's investors below.
SalesPatriot's investors · 8
CRV (Charles River Ventures)Bay Area · $250K – $5M checks · since 2025Impellent VenturesRochester · $1.5M checks · since 2025Link VenturesCambridge · $1M – $8M checksPear VCSan Francisco · $150K – $4M checks · since 2025Reinvent CapitalNew York · since 2025SV AngelSan Francisco · since 2025Uncorrelated VenturesLas Vegas · since 2025Y CombinatorSan Francisco · $500K checks · since 2025
Co-founders at SalesPatriot
NR
Nelson RayFounder
BR
Ben Rhodes-KropfFounder
Experience
- SalesPatriot (YC W25)Co-Foundercurrent2024 — presentSan Francisco, CA
- TensorCellMachine Learning Researcher2022 — 2024Warsaw
- CMSCorporate Law Intern2024Warsaw
- InPostData Science Intern2024Warsaw, Mazowieckie, Poland
- Gazeta Giełdy i Inwestorów „Parkiet”Writer2022 — 2023
- INS - Institut de Neurosciences des SystèmesVisiting Research Intern2023Marseille, Provence-Alpes-Côte d’Azur, France
- Proteon PharmaceuticalsBioinformatics Researcher2023Łódź
- ClimaticaData Science Intern2022Warsaw, Mazowieckie, Poland
Skills & more
Start-up Leadership1Machine Learning1Start-upsComputational NeuroscienceSoftware DesignProgrammingData StructuresPrivate EquityCorporate LawCorporate FinanceMergers & Acquisitions (M&A)FinTech
+12 more
Technological InnovationBioinformaticsMedical DevicesOperationsFinancial AnalysisOperational EfficiencyDigital HealthEconomicsAnalytical SkillsOrganization SkillsWritingProblem SolvingLanguages English · French · Polish · Spanish
From Maciej's professional profile.
Frequently asked questions
- Who is Maciej Szymczyk?
- 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.
- Where does Maciej Szymczyk work?
- Maciej Szymczyk is Founder of SalesPatriot.
- What companies did Maciej Szymczyk found?
- Maciej Szymczyk founded SalesPatriot.
- Where did Maciej Szymczyk go to school?
- Maciej Szymczyk studied at UC Berkeley Management, Entrepreneurship, & Technology (M.E.T.) program (Bachelor of Science - BS, Triple major in Electrical Engineering & Computer Science); Y Combinator; University of California, Berkeley, Haas School of Business (Bachelor of Science - BS, Business Administration).
Founder mafias
Y Combinator mafia10,230
Also came through, then founded or led a company.
Sam AltmanPresidentFounded Tools for Humanity +3Garry TanPresident & CEOFounded Y Combinator +1Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianPartnerFounded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded Paradigm +1
+ 10,223 more
University of California, Berkeley, Haas School of Business mafia265
Also came through, then founded or led a company.
Ivan ZhouBachelor of Science (B.S.)Founded Decagon +2Wendy JohanssonExecutive Education: Product ManagementFounded Misaludhealth +2Jay ParrishMBAFounded ROME Therapeutics +1Raj Shekhar SinghManagement of TechnologyFounded Z21 +1Nanxi LiuFounded Nanoly Bioscience +1Kevin ChouBachelor of Science - BSFounded Superlayer +1
+ 258 more
UC Berkeley College of Engineering mafia54
Also came through, then founded or led a company.
Matt MilfordBachelor’s DegreeFounded Swayhealth +2Rohan AroraBachelor's degreeFounded Biosense +1Neeka MashoufBachelor of Science (BS)Founded Rubi Laboratories +1Trishala JainBachelor of Science - BSFounded Buildbox +1Divyaditya ShrivastavaBachelor's degreeFounded PaladinRussell NibbelinkBachelor of Science (BS)Founded Overview
+ 47 more
International Baccalaureate mafia45
Also came through, then founded or led a company.
JJ TangSuzhou Singapore International SchoolFounded Rootly +1Aleksandra Pedraszewska33. N. Copernicus High School in WarsawFounded VividQ 3Dホログラフィーのプラットフォーム基盤 +1Teddy JungreisInternational Baccalaureate Diploma Recipient at Winter Park High SchoolFounded WinibleRaymundo GonzalezIB DiplomaFounded EdenSourav SanyalCOMPUTER SCIENCE - HLFounded AvairSenseMax KazakovFounded Coperniq
+ 38 more
UC Berkeley Management, Entrepreneurship, & Technology (M.E.T.) program mafia12
Also came through, then founded or led a company.
Nelson RayDual Degree | EECS & Haas School of BusinessFounded ByDesign +1Trishala JainBachelor of Science - BSFounded Buildbox +1Aditya GanapathiFounded CoraMichael TrehanM.E.T.Founded HABITRohil AgarwalFounded The Context CompanyGatik TrivediBachelor of Science - BSFounded Lance
+ 5 more
Same school
Also attended UC Berkeley Management, Entrepreneurship, & Technology (M.E.T.) program13
Tom SpringerAssociate at Ibex InvestorsAditya GanapathiFounder at CoraNelson RayFounder at SalesPatriotMichael TrehanFounder at HABITRohil AgarwalFounder at The Context CompanyGatik TrivediFounder at Lance
+ 7 more
Also attended Y Combinator2,000
Tarek MansourCo-founder & CEO of KalshiSuhail DoshiFounder of Mixpanel; founder of ParticleSubomi OluwalanaCo-founder & CEO of ConvoyArhaan A.Deeptech Fellow at Clear VenturesCollin WallaceGeneral Partner at Lobby CapitalVictor SantosVictor Scout at One Way Ventures
+ 1,994 more
Also attended UC Berkeley College of Engineering81
Arhaan A.Deeptech Fellow 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
+ 75 more
Also attended International Baccalaureate117
Jessica WangFP&A Manager at March Capital PartnersGustavo González de la PeñaAnalyst at Inveready Technology Investment GroupConrad SchooInvestor at EQT VenturesMaximilian SamneInvestor at EQT VenturesDanny EdmanInvestor at Alpha PartnersHari GopalDirector of Corporate Insights at Tech Square Ventures
+ 111 more
