Jobs backed by Castle Island Ventures

Talos provides institutional-grade technology and data for trading and managing digital assets across the full investment lifecycle.

Monad Foundation supports the growth, adoption, governance, and decentralization of the Monad Layer-1 blockchain protocol.

TYB is a community-driven rewards and loyalty platform that connects fans with brands through challenges, feedback, exclusive access, collectibles, and rewards.

Yellow Card supplies licensed stablecoin payment rails covering treasury, cross-border payments and liquidity for businesses across African markets.

Crusoe is an active AI-infrastructure company operating an AI cloud platform, managed AI services, and AI data-center infrastructure.

Financial infrastructure for Bitcoin-native markets, secured by zero-knowledge proofs.

Cyclops provides crypto and stablecoin infrastructure exclusively for payments companies.

Halborn provides security audits and assessments for blockchain protocols, smart contracts, and AI systems to identify vulnerabilities and strengthen defenses.

River Financial Inc. operates a Bitcoin financial platform for individuals, businesses, and private clients. It provides Bitcoin buying and selling, recurring purchases, custody and transfers, cash interest paid in Bitcoin, and banking-related features.

Hata is a regulated cryptocurrency exchange offering instant buy/sell, spot trading, auto-investing, staking, rewards, and OTC services.