Where did Jan Riethmayer go to school?

Jan Riethmayer studied at MIT xPRO (Designing and building AI Products and Services, Artificial Intelligence); Technische Universität Berlin.

Jan Riethmayer

Investor

VP of Engineering at Earlybird Venture Capital · VP Engineering at Earlybird DWES Management GmbH & Co. KG

Berlin

Find your path to Jan

262 people in our graph share verified history with Jan — schools, employers, funds. One of them is your warm intro.

Dan LupuunlockedJan: together at Earlybird Venture Capital (2025–2026)

×7Jan: together at Earlybird Venture Capital

Jan: together at Automata

×3Jan: together at Technische Universität Berlin

About

Jan Riethmayer is VP of Engineering at Earlybird Venture Capital, where he leads product and engineering with a three-person team and an agent-based workflow. Previously, he was a three-time VC-backed founder and CTO, including at Zencargo, which he helped grow from inception to Series B while leading engineering, product, and design teams of over 60 people, as well as bonusbox, which reached 4 million users in Brazil and Germany, and Kaizera. He also ran a development agency that completed 12 projects in a year for clients including Carhartt WIP, Red Bull, and Otto Bock, and twice prepared engineering data rooms for Series B rounds.

Experience

Earlybird Venture CapitalVP of Engineeringcurrent2025 — presentBerlin, Germany
Radical CTOExecutive CTO Coach | Interim CTO | Fractional CTO2021 — 2025Greater London, England, United Kingdom
Radical CTOSenior Full Stack Engineer: CHAPTR: AI in publishing2024London Area, United Kingdom
Radical CTOEngineering Leadership Coach - AWELL: Make care flows work harder than care teams with Awell2023 — 2024London Area, United Kingdom
Radical CTOEntrepreneur in Residence - Signal Ocean2023London Area, United Kingdom
Radical CTOFractional CTO - Passion.io - Mobile apps as a service for influencers2022London Area, United Kingdom
Radical CTOData Engineer - Sillwood Technologies; Speech Processing Consultancy. Voice to Voice2022London Area, United Kingdom
Radical CTOFractional CTO - Port Connect2021London Area, United Kingdom
AutomataDirector of Software Engineering2022 — 2023Greater London, England, United Kingdom
KaizeraCo-Founder and CPO2021 — 2022Greater London, England, United Kingdom
ZencargoCTO and co-founder2017 — 2021London Area, United Kingdom
Solar Options for Schools LtdCTO2016Distributed
bonusbox GmbHCTO2011 — 2016Berlin
urbanvention UGCTO2010 — 2011Berlin
DAI-LaborJava Developer and Data Scientist2010Technische Universität Berlin
Fyber (Sponsorpay)Lead Backend Developer (Ruby on Rails)2009 — 2010Berlin
MediapeersBackend Developer (Ruby on Rails)2008 — 2009

Skills & more

Software ArchitectureMachine Learning5Data Analysis5Product Development5ProductBayesian inference4Regression ModelsUnsupervised LearningHuman Computer InteractionGenerative Adversarial Networks (GANs)Cross-functional Team Leadership3Cybersecurity3

+12 more

Artificial Intelligence (AI)TypeScriptTalent StrategyM&A Due DiligenceExecutive CoachingDue DiligenceProduct StrategyProduct DiscoveryAgentic AI DevelopmentAI DesignRecurrent Neural Networks (RNN)Autoencoders

Languages Deutsch · Englisch

Designing and Building AI Products and Services — Emeritus
Neural Networks and Deep Learning — DeepLearning.AI

From Jan's professional profile.

Colleagues at Earlybird Venture Capital

Akash Bajwa

Principal at Earlybird DWES Management GmbH & Co. KG

Andre Retterath

General Partner at Earlybird Venture Capital

Anna Andersson

Head of Community & Events at Earlybird DWES Management GmbH & Co. KG

Ben Wilkening

Vision Lab Partner at Earlybird DWES Management GmbH & Co. KG

Benedetta Montani

Fund Management at Earlybird Venture Capital

Bianca Martin

Backoffice Managerin at ALPS Family Office AG

Charlotte Zietlow

Office Manager & Team Assistant at Earlybird DWES Management GmbH & Co. KG

Christian Nagel

Investor at Earlybird Venture Capital

Frequently asked questions

Who is Jan Riethmayer?: Jan Riethmayer is VP of Engineering at Earlybird Venture Capital, where he leads product and engineering with a three-person team and an agent-based workflow. Previously, he was a three-time VC-backed founder and CTO, including at Zencargo, which he helped grow from inception to Series B while leading engineering, product, and design teams of over 60 people, as well as bonusbox, which reached 4 million users in Brazil and Germany, and Kaizera. He also ran a development agency that completed 12 projects in a year for clients including Carhartt WIP, Red Bull, and Otto Bock, and twice prepared engineering data rooms for Series B rounds.
Where does Jan Riethmayer work?: Jan Riethmayer is VP of Engineering at Earlybird Venture Capital.
Where did Jan Riethmayer go to school?: Jan Riethmayer studied at MIT xPRO (Designing and building AI Products and Services, Artificial Intelligence); Technische Universität Berlin.

Founder mafias

Technische Universität Berlin mafia58

Also came through, then founded or led a company.

Alex GluchowskiM.Sc.Founded Paulcamper +2 Hanna Marie AsmussenMaster of Science (MS)Founded Localyze +1 Taner TopalDropped outFounded Flower +1 Alex PokrasStudienkollegFounded Genproof +1 Robert MeyerDr. rer. nat.Founded Alcemy +1 Fritz CramerTechnical MathematicsFounded Cosuno +1

+ 51 more

MIT xPRO mafia12

Also came through, then founded or led a company.

Allen LawProfessional CertificateFounded Park Hotel Group +3 Alexandra AmicoTechnical LeadershipFounded Avocademy Ilan Ben DavidIntroduction to quantum computingFounded ZOOZ Ryan CloseAi for senior executivesFounded Bartesian Greg SymonsChief Operating Officer ProgramFounded Asymbl John GrangeFounded OpsCompass

+ 5 more

Earlybird Venture Capital mafia9

Also came through, then founded or led a company.

Fabian HeilemannGeneral PartnerFounded Aenu +1 Ferry HeilemannVenture PartnerFounded Aenu +1 Catrin SchmidtTeam AssistantFounded Aenu Julian RiebartschInvestment InternFounded Calvin Risk Alexander LangeVCFounded Inflection Evren UcokCofounder, Managing Partner (DEF1) and Senior Advisor - Digital East Funds (DEF)Founded Trendyol

+ 2 more

Same school

Also attended MIT xPRO18

Ryan NeceManaging Partner at Next Legacy Partners Bradford WilkinsSenior Partner at Braven Bertrand NepveuGeneral Partner at Triptyq Capital Allen LawPrincipal at Seveno Capital Alex FraserManager, Talent Acquisition at Klue Alexandra AmicoFounder at Avocademy

+ 12 more

Also attended Technische Universität Berlin110

Dominik MatykaInvestor at Cavalry Ventures Michal NatoraSenior Investment Director - Industrial IT & Robotics at Emerald Technology Ventures Ag Carolin FunkPartner at Blue Bear Capital Partners Carmo SilvaManager, Retail at Bright Pixel Capital Axel WünschDirector of Operations at Redstone Samuli SirénGeneral Partner & Founder at Redstone

+ 104 more

Shared employers

Also worked at Zencargo7

Christian SallerInvestor at HV Capital Alvaro Alvarez del RioManaging Partner at Boost Capital Partners Dan JonesManaging Partner at Jigsaw VC Dan SmithInvestor at Jigsaw VC Shan DrummondPartner at Samos Investments Alex HershamFounder at zencargo

+ 1 more

Also worked at bonusbox GmbH1

Thomas LuekePartner at Cherry Ventures