Joo Almeida is a technology co-founder who co-founded Castle, a bitcoin treasury platform built for small and medium-sized businesses. Joo Almeida's Twitter Score is 47 out of 1000 as of October 2026, ranking #19,655 (top 5%) among 498,348 tracked accounts.
Joo Almeida co-founded Castle and serves as its CTO, leading development of a platform that helps SMBs put idle cash to work by earning yield in bitcoin. Castle was founded in 2024 and raised a $1M oversubscribed pre-seed round in June 2025. Prior to Castle, Joo Almeida also co-founded OpenNode, where he previously served as CTO.
Joo Almeida has accumulated 5,151 followers as of October 2026 on X and has published 3,441 posts. Joo Almeida has been mentioned by 11 accounts, with 15 total mentions.
Who follows Joo Almeida on X?
The accounts that follow Joo Almeida include 218 founders, 30 angel investors, 90 influencers and 1 VCs. Among them are Nic Carter, Anthony Pompliano, Udi Wertheimer, Db, Neeraj K. Agrawal and Adam Back.