About
Daniel Grittner is co-founder and CTO at Hey Telo. He previously worked as a software engineer at Amazon and Celonis, where he focused on database infrastructure, and has published computer vision research. He holds a BS in Computer Science from Technical University of Munich and completed bioinformatics coursework at ETH Zurich.
Founder at Hey TeloYC W25
Intro paths
YC
Daniel 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, Daniel can intro founders to Hey Telo's investors below.
Hey Telo's investors · 1
Co-founders at Hey Telo
CG
Christopher GrittnerFounder
Experience
- Hey Telo (YC W25)Co-Foundercurrent2025 — presentMunich, Bavaria, Germany
- Stealth StartupCo-Founder2024San Francisco Bay Area
- AmazonSoftware Development Engineer2022Luxembourg
- TUMResearch Assistant - Computer Vision Group2021 — 2022Munich, Bavaria, Germany
- CelonisSoftware Engineer (Database Development)2020 — 2022Munich, Bavaria, Germany
- ORDASoftware Engineer2019Munich, Bavaria, Germany
- Rödl & Partner (Geschäftsfeld Unternehmens- und IT-Beratung)IT-Consultant2017Nürnberg
Education
- Y CombinatorW25
- Technical University of MunichMaster of Science - MS, Computer Science2022 — 2023
- ETH Zürich2023
- Technical University of MunichBachelor of Science - BS, Computer Science2018 — 2022
- EF Language AbroadAdvanced Diploma in English for Business in San Francisco2017 — 2018
- Theresien Gymnasium AnsbachGerman Abitur2008 — 2017
- Colegio Mundo Maria Montessori Santo Domingo, Dominican Republic2013 — 2014
Skills & more
Rust (Programming Language)1C++3Java5Python5JavaScript3HTML4CSS2Mac OSX2Git2React.jsNode.jsC
+12 more
SQLReact NativeCircleCIPyTorchCreativityStart-upsSoftware EngineeringWeb DevelopmentInvestitionenEntrepreneurshipSoftware DevelopmentManagementLanguages Deutsch · Englisch · Französisch · Spanisch
From Daniel's professional profile.
Same school
Also attended Y Combinator1,476
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
+ 1,470 more
Also attended Technical University of Munich185
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
+ 179 more
Also attended ETH Zürich139
Bastian HasslingerInvestor at Index VenturesSteve VassalloInvestor at Foundation CapitalHelge DaebelPartner, Head of Water at Emerald Technology Ventures AgMaurin DaiInvestment Manager, Physical AI & Robotics at Emerald Technology Ventures AgChristoph FreiPartner, Head of Energy at Emerald Technology Ventures AgMax HeftiInvestment Director - Energy at Emerald Technology Ventures Ag
+ 133 more
Also attended EF Language Abroad8
Yagiz KARADENIZManaging Partner at DOMiNO VenturesAndrés EsquivesIntern at Salkantay VenturesMario PadillaInvestor at ActyusLarissa SequeiraInvestor at Spring ActivatorYannick SchelbertHead Risk, Legal & Compliance at GWM AGLukas ThielePlatform Team at First Momentum
+ 2 more
Shared employers
Also worked at Hey Telo (YC W25)1
Also worked at Stealth Startup229
Andrew ChenGeneral Partner at Andreessen HorowitzErica VanInvestment Director at Intel CapitalHemamAdvisor at Clear VenturesHamish GarnettAssociate at Manta Ray VenturesFranz KoflerInvestor at Next Frontier CapitalGüimar Vaca SitticVenture Partner at FJ Labs
+ 223 more
Also worked at Amazon365
Dave MunichielloInvestor at GV (Google Ventures)Viswa SankaranarayananVenture Partner at Monta Vista CapitalAlessandro De BenedettiAssociate at NorthzoneScott JacobsonManaging Director at Madrona Venture GroupBill RichterCEO of Qumulo and venture partner at MadronaEduardo BlasiAnalyst at Inveready Technology Investment Group
+ 359 more
