Erwin Castellanos

Digital executive, advisor, investor.

πŸ“ United StatesπŸ”„ Updated September 2026πŸ’Ό 2 investmentsπŸ“… 10 years investingπŸ—“ Last invested Jan 2021
Angel investor🌍 United States
2
Total investments
2
Early stage
0
Mid stage
0
Late stage
10y
Years active

Portfolio

2 investments Β· sorted by recency
All investments
Early stage
Mid stage
Late stage
Investor and Advisor
Jan 2021
HiTide helps Shopify brands convert their social followers to SMS subscribers. We enable Instagram DM automations that result in rapid, high intent SMS list growth. Were integrated with Attentive, Klaviyo, Postscript and Sendlane to drive direct, measurable ROI.
Investor and Advisor
Apr 2016
StackSource is a tech-enabled commercial real estate loan platform. We connect investors who are developing or acquiring commercial properties with financing options like banks, insurance companies, and private lenders through an easy, transparent process. We’re taking the best of commercial mortgage brokerage and updating it for the 21st century. Learn more at StackSource.com.
Experience Β· 2 entries
All (2)
Investments (2)
2021
Investor and Advisor
Jan 2021
HiTide helps Shopify brands convert their social followers to SMS subscribers. We enable Instagram DM automations that result in rapid, high intent SMS list growth. Were integrated with Attentive, Klaviyo, Postscript and Sendlane to drive direct, measurable ROI.
2016
Investor and Advisor
Apr 2016
StackSource is a tech-enabled commercial real estate loan platform. We connect investors who are developing or acquiring commercial properties with financing options like banks, insurance companies, and private lenders through an easy, transparent process. We’re taking the best of commercial mortgage brokerage and updating it for the 21st century. Learn more at StackSource.com.