Julian Mattes
Partner at Yttrium
Hesse
Julian Mattes, Partner at Yttrium is an active investor based in Hesse. This profile covers what Julian Mattes backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelVCPEInvestment Partner
- Stages
- Pre SeedSeedSeries ASeries BLate Stage Venture
- Invests in
- FintechSaaS & EnterpriseConsumer & RetailClimate & EnergyDeveloper Tools & DataGaming & EntertainmentMedia & ContentHR & Future of Work
- Location
- Hesse
- Typical check
- $1M
- Past investments
- 13
Notable investments
Seven SendersCleverConnectUpsun (formerly Platform.sh)
quantilopeTRUCE Softwareinterop.io
Deutsche Bank
Mastercard
riskmethodsSoltrx Transaction Services GmbHStarmindHow to reach Julian Mattes
Angels and operators like Julian Mattes reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded Accelerator.
Connect with Julian Mattes
Frequently Asked Questions
What does Julian Mattes invest in?
Julian Mattes invests in Fintech, SaaS & Enterprise, Consumer & Retail and Climate & Energy, typically at Pre Seed, Seed, Series A and Series B. Match your sector and stage, then reach out with a personalized pitch.
What stage does Julian Mattes invest at?
Julian Mattes typically invests at Pre Seed, Seed, Series A and Series B. Lead with traction that fits the stage when you reach out.
What is Julian Mattes's typical check size?
Julian Mattes typically writes checks around $1M. Use it as a signal for whether your raise fits their stage.
How do I contact Julian Mattes?
Unlock Julian Mattes's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.