Jobs backed by Castle Island Ventures

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

Cyclops provides crypto and stablecoin infrastructure exclusively for payments companies.

Cyclops provides crypto and stablecoin infrastructure exclusively for payments companies.

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

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

Arch is a crypto-backed lending platform that lets users borrow USD or stablecoins against digital assets without selling them.

Arch is a crypto-backed lending platform that lets users borrow USD or stablecoins against digital assets without selling them.

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

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.

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.

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.

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

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.

Cyclops provides crypto and stablecoin infrastructure exclusively for payments companies.

Cyclops provides crypto and stablecoin infrastructure exclusively for payments companies.

Cyclops provides crypto and stablecoin infrastructure exclusively for payments companies.

Cyclops provides crypto and stablecoin infrastructure exclusively for payments companies.

Cyclops provides crypto and stablecoin infrastructure exclusively for payments companies.

Cyclops provides crypto and stablecoin infrastructure exclusively for payments companies.

Cyclops provides crypto and stablecoin infrastructure exclusively for payments companies.

Cyclops provides crypto and stablecoin infrastructure exclusively for payments companies.

Cyclops provides crypto and stablecoin infrastructure exclusively for payments companies.

Cyclops provides crypto and stablecoin infrastructure exclusively for payments companies.

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

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

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

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

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

Zodl is a Zcash-powered mobile wallet focused on private, self-custodial cryptocurrency payments and asset management.

Zodl is a Zcash-powered mobile wallet focused on private, self-custodial cryptocurrency payments and asset management.

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.

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

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

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

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

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

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

Edisyl, identified in the site’s patent disclosure as Flipside Crypto Inc, provides enterprise semantic-data infrastructure and AI-agent systems. It helps organizations encode internal metric definitions and connect data sources so AI systems, pipelines, and intelligence workflows can operate using the organization’s own business context.

Edisyl, identified in the site’s patent disclosure as Flipside Crypto Inc, provides enterprise semantic-data infrastructure and AI-agent systems. It helps organizations encode internal metric definitions and connect data sources so AI systems, pipelines, and intelligence workflows can operate using the organization’s own business context.

Edisyl, identified in the site’s patent disclosure as Flipside Crypto Inc, provides enterprise semantic-data infrastructure and AI-agent systems. It helps organizations encode internal metric definitions and connect data sources so AI systems, pipelines, and intelligence workflows can operate using the organization’s own business context.

Edisyl, identified in the site’s patent disclosure as Flipside Crypto Inc, provides enterprise semantic-data infrastructure and AI-agent systems. It helps organizations encode internal metric definitions and connect data sources so AI systems, pipelines, and intelligence workflows can operate using the organization’s own business context.

Edisyl, identified in the site’s patent disclosure as Flipside Crypto Inc, provides enterprise semantic-data infrastructure and AI-agent systems. It helps organizations encode internal metric definitions and connect data sources so AI systems, pipelines, and intelligence workflows can operate using the organization’s own business context.

Edisyl, identified in the site’s patent disclosure as Flipside Crypto Inc, provides enterprise semantic-data infrastructure and AI-agent systems. It helps organizations encode internal metric definitions and connect data sources so AI systems, pipelines, and intelligence workflows can operate using the organization’s own business context.

Chaos Labs builds technology for safer financial markets, including risk management systems, oracles, and AI models for blockchain protocols and financial institutions. It also develops enterprise AI infrastructure for understanding, governing, and improving organizational AI work.

Chaos Labs builds technology for safer financial markets, including risk management systems, oracles, and AI models for blockchain protocols and financial institutions. It also develops enterprise AI infrastructure for understanding, governing, and improving organizational AI work.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Casa provides non-custodial, multi-key self-custody security for Bitcoin and stablecoins, supported by its app and human security experts.

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