About
Founder of Onetool, a platform that consolidates business software applications under a single billing account and login system.
Founder at onetoolYC W20
Intro paths
YC
Gordian went through Y Combinator (Winter 2020) — any YC alum in your network can reach them through the YC community.
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In turn, Gordian can intro founders to onetool's investors below.
onetool's investors · 1
Co-founders at onetool
TB
Tobias BeckerFounder
Experience
- ElevenLabsGrowthcurrent2025 — presentHamburg, Germany
- Gordian Braun ConsultingInterim General Manager & Fractional CxO | Transformation & Growth2022 — 2025
- The Mentor GroupHead of Germany, Austria, Switzerland - Operating Partner (interim)2024 — 2025Hamburg, Germany
- Harry Hope.General Manager (interim)2024 — 2025Germany
- mailiveryFounding Investor2021 — 2023Berlin, Germany
- onetool Inc. & onetool GmbHCo-Founder & CEO2019 — 2021San Francisco Bay Area
- CleverShuttleDirector of Growth & Marketing (performance marketing, business development, go-to-market)2018 — 2019Berlin Metropolitan Area
- CleverShuttleDirector of Growth & Business Acceleration (corporate development, strategy, business development)2017 — 2018Berlin Metropolitan Area
- MOIAManager - Strategy & Investments2017Berlin Metropolitan Area
- G51 Amplify Venture CapitalAssociate2015 — 2017Austin, Texas Metropolitan Area
- Locana - Local. Shopping. Simplified.Co-Founder (CEO) - Product, Strategy & Marketing2015 — 2016Austin, Texas Metropolitan Area
- Arbeitskreis Börse (AKB)Lecturer/Main Speaker of the event series "Trading"2011 — 2014University of Mannheim
- Hogan LovellsTrainee/Research Associate Equity Capital Markets2013 — 2014Frankfurt Rhine-Main Metropolitan Area
- Weil, Gotshal & Manges LLPTrainee/Student Associate Capital Markets & Distressed Situations2012Frankfurt Rhine-Main Metropolitan Area
- Kreissparkasse LudwigsburgFinancial Analyst2008 — 2010Ludwigsburg, BW, Germany
Skills & more
Microsoft OfficeMicrosoft PowerPointMicrosoft ExcelPrivate EquityNew Business DevelopmentWorking AbroadAnalytical CapabilitySalesDemand GenerationOnline MarketingMarketing LeadershipBusiness Analysis
+12 more
BudgetingStrategic ConsultingSales and MarketingPersonnel LeadershipChange ManagementBusiness PlanningStrategic Marketing ConsultancyMarketing ManagementData AnalysisProduct DevelopmentMarketing StrategyTeamworkLanguages Chinese · English · French · German
- Certified Professional Banker — IHK Region Stuttgart
- Additional qualification: "Universal Financial Services" — IHK Region Stuttgart
From Gordian's professional profile.
Frequently asked questions
- Who is Gordian Braun?
- Founder of Onetool, a platform that consolidates business software applications under a single billing account and login system.
- Where does Gordian Braun work?
- Gordian Braun is Founder of onetool.
- What companies did Gordian Braun found?
- Gordian Braun founded onetool.
- Where did Gordian Braun go to school?
- Gordian Braun studied at Y Combinator (W20); Baylor University (MBA (Master of Business Administration), Management & Innovation); University of Florida (Master of Science in Entrepreneurship, Entrepreneurship).
Founder mafias
Y Combinator mafia8,773
Also came through, then founded or led a company.
Sam AltmanPresidentFounded Tools for Humanity +3Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianYC Summer 2005Founded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded HotspotsTrae StephensYC Winter 2022Founded Pursuit +1
+ 8,766 more
Y Combinator mafia4,716
Also came through, then founded or led a company.
Ryan SheaEntrepreneurshipFounded StacksTarek MansourFounded KalshiSuhail DoshiEating beans & riceFounded Playground +1Subomi OluwalanaW22Founded ConvoyDarius "Bubs" MonsefS19Founded Sightbox +3Matthew ScholzFounded Oisin Biotechnologies +3
+ 4,709 more
University of Florida mafia35
Also came through, then founded or led a company.
Andrew ScheuermannDual bachelors in Chemistry (B.S.) and Economics (B.A.)Founded Arch Systems +1Aaron KemmerCommunications & Leadership DevelopmentFounded MAX SPACE +1Gordon Hirsch WilsonStatistics and MathematicsFounded Rain AI +1Dr. John L Evans JrBAFounded Promising PeopleDavid KoleskyB.SFounded Montai TherapeuticsThomas BallBSFounded Next Coast Ventures
+ 28 more
Baylor University mafia6
Also came through, then founded or led a company.
University of Mannheim mafia6
Also came through, then founded or led a company.
Same school
Also attended Y Combinator2,000
Tarek MansourCo-founder & CEO of KalshiSuhail DoshiFounder of Mixpanel; founder of ParticleSubomi OluwalanaCo-founder & CEO of ConvoyMaroof AhmedFounder at Octopus VenturesJustin SwartPartner at Bitkraft Esports VenturesCollin WallaceGeneral Partner at Lobby Capital
+ 1,994 more
Also attended Baylor University31
Amanda BuschGeneral Counsel at Mucker CapitalRachel CraftOffice Assistant at Mercury FundGordon DaughertyCo-Founder & Chairman at Capital FactoryTy FindleyCo-Founder + General Partner at Ironspring VentureGenevieve GilbreathCo-Founder | General Partner at Springdale VenturesEric WilsonPartner at Serra Ventures
+ 25 more
Also attended University of Florida151
Bill GurleyGeneral Partner Emeritus at BenchmarkLauren HolsingerChief Of Staff at March Capital PartnersAndrea EchstenkamperVP of Marketing at HeavybitAmy KalokerinosInvestor at Khosla VenturesBrendon SchmidtPrincipal & Head of Business Development at Sierra VenturesDavid CorreaChief Financial Officer and Chief Compliance Officer at Marlin Equity Partners
+ 145 more
Also attended University of Mannheim84
Nicolas MetzkeInvestor at DaphniAmy ZhaoSpecialist Advisor, Web3 at Openspace VenturesLukas GenteleCEO, vCluster at EMERGENT VENTURESTashrik AhmedInvestor at OMERS VenturesMira KampPrincipal & Managing Director Germany at redalpineZiheng LiInvestor at Saison Capital
+ 78 more
Shared employers
Also worked at CleverShuttle1
Also worked at Weil, Gotshal & Manges LLP26
Claire TanguyInvestor at DaphniBob StefanskiManaging Director at eLab VenturesThea CrawshawInvestor at Index VenturesRoy WiesnerPartner at aMoonMallun YenFounder & Managing Partner at Operator CollectiveGeorge MetaxasSenior Advisor at Axon Partners Group
+ 20 more








































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