JN Ventures GmbH
Seed · 3 people tracked
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Investment thesis
JN Ventures GmbH is the holding and investment entity for Jonas Nagel's angel investing and entrepreneurial activities across multiple sectors. It invests at seed stage internationally and offers portfolio companies marketing support drawn from more than 12 years of operating experience, along with network introductions.
Team · 3 people
from public directoriesWhat they invest in
from 6 of 6 portfolio companiesAI & Machine Learning ×3SaaS ×3Fintech ×2PropTech ×2Construction Tech ×1Creator Economy ×1Enterprise Software ×1Healthtech ×1
HQs:United States×4
Investments · 6 tracked
founders shown can be your intro pathAquaShield provides non-invasive water leak detection sensors that install on existing building pipes to monitor flow patterns in real-time and identify leaks before they cause damage.
IoTPropTechSan Francisco, US
Paul Beckers(Co-Founder)inMarguerite Benoist(Co-Founder)in
Co-investorsY Combinator20VCFounderfulJames Beshara FundNPU VenturesOurCrowd+1 more
Callab provides AI voice agents for enterprise contact centers that integrate with existing PBX, SBC, and telephony infrastructure via SIP without migration.
AI & Machine LearningEnterprise SoftwareSaaSSan Francisco, US
Haithem Kchaou(Co-founder/CEO)inChehir Dhaouadi(Founder)in
Co-investorsY CombinatorP1 Ventures216 CapitalDFS LabFlourish VenturesRebel Fund+5 more
Grade is a payment platform that automates payouts to creators across borders, handling tax compliance, KYC, and invoicing in multiple countries.
AI & Machine LearningCreator EconomyFintechSaaSSan Francisco, US
Lotanna Ezeike(CEO, Co-founder)inJames Heaney(Founder, CTO)in
Co-investorsPioneerY Combinator
Patientdesk.ai provides an AI agent that automates appointment scheduling, payment processing, and insurance verification for dental practices, enabling them to fill open slots with profitable patient visits.
Healthtech
Oncel Ozgul(Founder)inEmre Kaplaner(Founder)inFikri San Koktas(Founder)in
Co-investorsTreeo VCY Combinatore2vcEksim VenturesEppes Creek VenturesFirst Generation Capital+1 more
Plan0 provides AI-powered cost estimation and scenario simulation tools for real estate construction and design, serving developers, general contractors, and investors to accelerate project underwriting and planning decisions.
AI & Machine LearningConstruction TechPropTech
Arash Barati(Founder)inShervin Barati(Founder)inDimitris Pagonakis(Founder)in
Co-investorsFundersClubY CombinatorAgrolimen VenturesGreat Wave VenturesTeam IgniteWadstein Capital+1 more
River Markets provides a unified trading terminal and API for prediction market desks, aggregating order books and execution across multiple prediction exchanges like Kalshi and Polymarket.
FintechSaaSSan Francisco, US
Oscar Levy(Co-Founder)inAntonin Parrot(Founder)in
Co-investorsHaun VenturesY CombinatorCherry VenturesCoinbase VenturesDragonflyDunbar Capital+4 more
Portfolio news
latest coverage across their companiesRiver Markets · ycombinator.com · May 26, 2026
Callab AI · ycombinator.com · May 22, 2026
AquaShield · ycombinator.com · May 20, 2026
PLAN0 AI · ycombinator.com · May 13, 2026
Patientdesk.ai · ycombinator.com · Mar 21, 2026
Grade · ycombinator.com · Feb 17, 2026
Frequently asked questions
- How many investments has JN Ventures GmbH made?
- JN Ventures GmbH has 6 tracked investments.
- What stage does JN Ventures GmbH invest at?
- JN Ventures GmbH invests at the Seed stage.
- What sectors does JN Ventures GmbH focus on?
- JN Ventures GmbH focuses on Enterprise Software, Fintech, Healthtech, PropTech.


































