Investor profile
Jens Erik Nissen
Accelerator, Venture capital & Startup Mentor at Rockstart, Medlem af det faglige vurderingsudvalg at Innofounder
Jens Erik Nissen is a Startup Mentor at Rockstart, whose known portfolio counts 15 companies.
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Investment focus
Contacts
Affiliated funds' portfolios
Startup Mentor at Rockstart, whose known portfolio counts 15 companies
- Refurbi
- Tractor Junction
- Level Nine
- SenseUp Biotechnology
- Another Earth
- Root Sustainability
- Geobirds
- Sin Intermediarios
- hackU
- Contribe.io
- Decameal
- EtOH Spirits
- and 3 more
Medlem af det faglige vurderingsudvalg at Innofounder, whose known portfolio counts 5 companies
- Complir
- Affecture
- Kleen Hub
- Eat Grim
- Itterno
Investor Profile
Founders in the listed sectors AI, Climate, Commerce and FinTech, and focus areas AgriTech, Analytics, Biotech and Circular Economy fall inside that listing.
Stage-wise, the deals at Rockstart cluster around Pre-Seed, Seed and Series A rounds.
What the affiliated firm has backed is the closest available signal on whether Jens Erik Nissen is worth approaching.
Colleagues
Don Ritzen
Founder and advisor
Amsterdam, Netherlands
Juan Salcedo
Mentor
Canada
Arash Rahimi
Founder SPLISH
Copenhagen, Denmark
Alexander Liebach Smedegaard
Investor
Copenhagen, Denmark
Robert Wilhelm
Advisory Board Member
Amsterdam, Netherlands
Julia Padberg
Investment Committee - Member
Hilversum, Netherlands
Rune Theill
CEO & Founder
Copenhagen, Denmark
Daniella Barreto Garces
Investor
Bogotá, Colombia
Juan Sebastian Iraizoz Cardona
Angel Investor
Cali, Colombia
Timothy Shoup
Senior Advisor
Copenhagen, Denmark
Ignacio Gonzalez Oñate
Investor
Madrid, Spain
Lars Neupart
Business Mentor
Denmark
Tony Urban
Mentor
San Francisco, United States
Mark Durno
Managing Partner
Edinburgh, United Kingdom
Max ter Horst
Managing Partner
Netherlands
Arnout Dijkhuizen
Investment Principal Agrifood
Brussels, Belgium
Frequently asked questions
Who is Jens Erik Nissen?
Jens Erik Nissen is an accelerator partner and venture capital investor based in Copenhagen, Denmark, listed as Startup Mentor at Rockstart. The known portfolio of that firm counts 15 companies. That portfolio belongs to the firm, not to Jens Erik Nissen personally.
What does Jens Erik Nissen invest in?
Listed sectors include AI, Climate, Commerce and FinTech; listed focus areas include AgriTech, Analytics, Biotech and Circular Economy. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Jens Erik Nissen invest at?
Rockstart appears in Pre-Seed, Seed and Series A rounds across its known deals, and Jens Erik Nissen is listed there as Startup Mentor. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Jens Erik Nissen listed at?
Jens Erik Nissen is listed as Startup Mentor at Rockstart. 16 other people in the database share a firm with Jens Erik Nissen.
How do I contact Jens Erik Nissen?
An email address and a LinkedIn page are on file for Jens Erik Nissen. The address stays masked on this page and is readable inside RaiseHunt after you create an account. The database holds no phone number for this profile.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal