Find your path to Christopher
350 people in our graph share verified history with Christopher — schools, employers, funds. One of them is your warm intro.
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
Christopher went through Y Combinator (Winter 2025) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Gustaf Alstromer — the partner who ran Hey Telo's batch and knows the company first-hand. YC profile ↗
In turn, Christopher can intro founders to Hey Telo's investors below.
Hey Telo's investors · 1
Co-founders at Hey Telo

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
+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 mafia10,230
Also came through, then founded or led a company.
+ 10,223 more
University of Cambridge mafia589
Also came through, then founded or led a company.
+ 582 more
National University of Singapore mafia184
Also came through, then founded or led a company.
+ 177 more
Manage and More by UnternehmerTUM mafia14
Also came through, then founded or led a company.
+ 7 more
Celonis mafia12
Also came through, then founded or led a company.
+ 5 more
Same school
Also attended Y Combinator2,000
+ 1,994 more
Also attended Technical University of Munich468
+ 462 more
Also attended Manage and More by UnternehmerTUM17
+ 11 more
Also attended FOM University of Applied Sciences for Economics and Management32
+ 26 more
Shared employers
Also worked at Hey Telo (YC W25)1
Also worked at Stealth Startup483
+ 477 more




































































