Domingo Karsten

Investing in real estate and companies

Amsterdam, North Holland, Netherlands

About

Entrepreneur and investor in Amsterdam. I built companies in online marketing, and now focus on real estate investment and redevelopment, with the occasional investment in talented founders.

Experience

  • Co-Founder at doar
    2024 - Present · 2 yrs 7 mos

    Doar is Frisian for "door" and "dare". We buy, develop, and rent out residential and commercial real estate in the Greater Amsterdam region. We develop properties with potential to add new housing, build and renovate sustainably to a high standard, and rent within national housing regulations (including the WWS system) at fair market prices.

  • Angel Investor at Saga
    Oct 2025 - Present · 10 mos

    An AI platform built for legal professionals, developed alongside lawyers and tax advisors. It combines legal research, case documents, and role-based workflows, with a hands-on training program to help legal teams adopt AI in daily practice.

  • Investor at wecantrack
    Jan 2019 - Present · 7 yrs 7 mos

    Backed founders Sirio Küpper and Ajay Singh in building wecantrack, a platform that integrates affiliate data with tools like Google Analytics and Google Ads. Launched in 2020 and later attracted investment from Awin.

  • CEO & Co-Founder at Saleduck
    Sep 2010 - May 2020 · 9 yrs 9 mos

    Co-founded Saleduck, which started as a deals platform in Belgium (Solden.be) and grew into the country's #1 before expanding across Europe and Southeast Asia. As CEO I led strategy, international expansion, and team building. In 2020 the headquarters moved to Kuala Lumpur and Sjoerd Copier succeeded me as CEO.

  • Co-Owner at Gratisoptehalen.nl
    May 2013 - Mar 2016 · 2 yrs 11 mos

    Gratisoptehalen.nl was the biggest "Circular Exchange" classified platforms in the Nederlands, which has been acquired by He Ping B.V.