About
Christopher Grittner is co-founder and CEO of HeyTelo. Previously, he led product expansion at Finantier (YC W21), served as an early employee at Tacto building product functionality, held a product role at Celonis, and was an investment team member at Earlybird Venture Capital. He studied computer science and business at Technical University of Munich and National University of Singapore, and researched LLMs in data analytics at the University of Cambridge.
Founder at Hey TeloYC W25
Intro paths
YC
Christopher 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 Gustaf Alstromer — the partner who ran Hey Telo's batch and knows the company first-hand. YC profile ↗
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In turn, Christopher can intro founders to Hey Telo's investors below.
Hey Telo's investors · 1
Co-founders at Hey Telo
DG
Daniel GrittnerFounder
Experience
- Hey Telo (YC W25)Co-Foundercurrent2025 — presentMunich, Bavaria, Germany
- Stealth StartupCo-Founder2024Munich, Bavaria, Germany
- Finantier (YC W21)Product Manager2022Singapore, Singapore
- TactoProduct Manager2021Munich, Bavaria, Germany
- CelonisProduct Manager2019 — 2020Munich Area, Germany
- Earlybird Venture CapitalInvestment Team2019Berlin, Berlin, Germany
- testxchangeProduct Manager2018 — 2019Berlin und Umgebung, Deutschland
Skills & more
Teamwork4Deal Sourcing8Real Estate8Start-ups21Productmanagement12Venture Capital10Online-Marketing5Wirtschaftsprüfung3Psychology4Microsoft Office5Google Analytics1SQL3
+4 more
HTMLCSSJavaPythonLanguages English · French · German
From Christopher's professional profile.
Frequently asked questions
- Who is Christopher Grittner?
- Christopher Grittner is co-founder and CEO of HeyTelo. Previously, he led product expansion at Finantier (YC W21), served as an early employee at Tacto building product functionality, held a product role at Celonis, and was an investment team member at Earlybird Venture Capital. He studied computer science and business at Technical University of Munich and National University of Singapore, and researched LLMs in data analytics at the University of Cambridge.
- Where does Christopher Grittner work?
- Christopher Grittner is Founder of Hey Telo.
- What companies did Christopher Grittner found?
- Christopher Grittner founded Hey Telo.
- Where did Christopher Grittner go to school?
- Christopher Grittner studied at Y Combinator (W25); University of Cambridge (Visiting Scholar, LLMs in Data Analytics); Technical University of Munich (Bachelor of Science - BS, Computer Science & Business).
Founder mafias
Y Combinator mafia8,773
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Y Combinator mafia4,716
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University of Cambridge mafia256
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Stewart ButterfieldMPhilFounded Flickr +1Demis HassabisBAFounded Google Deepmind +2Immad AkhundMaster of Arts (M.A.)Founded Clickpass +2Inaki BerenguerPhDFounded InfiniteWatch +2Harish AgarwalMaster of Philosophy - MPhilFounded Nori +2Nikola MrkšićDoctor of Philosophy (Ph.D.)Founded Poly +2
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National University of Singapore mafia88
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Aihui OngB.Sc.Founded Love With Food +2Mike MoradiLeadershipFounded Southwest Nanotechnologies +1Lloyd LeeExchange StudentFounded Hyperithm +1Sivamani VarunBachelor of Engineering - BEFounded Keygraph +1Victor Liew Jia HaoBachelor of Computing (Honours)Founded StraitsX +1Kushal PillayMaster's degreeFounded Powerhouse Ai +1
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Manage and More by UnternehmerTUM mafia10
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Tim ZinklManage and More ScholarshipFounded Pairio +1Philip EllerManage&More ScholarshipFounded AccessOwlVlad KeilManage and More by UnternehmerTUMFounded LioFelix GerlachScholarship Manage & More G18Founded Beglaubigt.deAlmo SutedjoManage and More ScholarshipFounded ComenaMarvin Abdel-MassihManage&More ScholarshipFounded Uplane
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Same school
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Also attended Technical University of Munich283
Daan BoekhoudtInvestment Analyst at Cottonwood Technology FundJulian von EckartsbergManaging Director Europe at Burda Principal InvestmentsHannes Voucko-GlocknerInvestment Analyst at Burda Principal InvestmentsThomas MeierPartner, Head of Resilience in Energy & Resources Investments at Verve VenturesNiklas Born de AndrésInvestment & Product Intern at Kibo VenturesItziar EstevezPartner - Growth at Iris Capital
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Also attended Manage and More by UnternehmerTUM12
Jeremias HeinrichFounding Partner at PICUS CAPITALBeatrice BöhmPrincipal at GET FundJohann Nordhus WestarpManaging Director at Flash VenturesPhilip EllerFounder at AccessOwlVlad KeilFounder at Lio (formerly askLio)Felix GerlachFounder/Building at Beglaubigt.de
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Also attended FOM University of Applied Sciences for Economics and Management16
Mira KampPrincipal & Managing Director Germany at redalpineOliver SchwarzerInvestor at Extantia CapitalAurelia TettenbornJunior HR Manager at PICUS CAPITALJulia HallExecutive Assistant at Vorwerk VenturesMarie GrundInvestment Manager TGFS at SIB Innovations- und BeteiligungsgesellschaftChristian FasseSenior Investment Manager at Phoenix Contact Innovation Ventures
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+ 10 more
Shared employers
Also worked at Hey Telo (YC W25)1
Also worked at Stealth Startup351
Andrew ChenGeneral Partner at Andreessen HorowitzGabriel PereyraCo-founder & President of HarveyErica VanInvestment Director at Intel CapitalHemamAdvisor at Clear VenturesHamish GarnettAssociate at Manta Ray VenturesFranz KoflerInvestor at Next Frontier Capital
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