General Info
Jelmer De Jong is a Partner and CTO at RTP Global, with investments typically ranging from $2.0M to $7.0M, with a sweet spot at $4.0M. He has focused on various sectors in Seed and Series A stages, including Cybersecurity, Enterprise Applications, Data Services, Cloud Infrastructure, Web3/Crypto, AI, SaaS, and FinTech. Jelmer has demonstrated a collaborative partnership style with a human, personable, trustworthy, and smart approach within RTP Global. His track record includes investments in companies like emma and aito.ai, with co-investors from RTP Global such as Alexander Pavlov, Galina Chifina, Joe Botsch, Jules Schwerin, and Louis Dussart. Jelmer De Jong’s geographical preference includes regions like Colorado / Utah, Austin, Los Angeles / Southern California, New York City, and the San Francisco Bay Area.
Location: Amsterdam, Netherlands
Country: Netherlands
Industries: Not available
Investment Regions: EU
Investment Stages: pre-seed, seed
Website: https://www.jelmerdejong.com/
angel-individual
EU
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🤖 AI Activity Report
Status: very-active
AI Reasoning: RTP Global (authored posts) shows Jelmer de Jong associated with portfolio activity in 2025 – notably posts about FirstClub (September 4, 2025) and TERN Group (September 10, 2025). These indicate investment activity less than 6 months prior to the reference date, with the most recent known investment being FirstClub/TERN Group in September 2025. Therefore classify as very-active.
Angel activity thresholds:
Low Activity – Only known angel investments more than 12 months ago.
Active – Known angel investments between the last 12 and 6 months.
Very Active – Known angel investments in the last 6 months.
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