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cLabs | Berlin, Buenos Aires, and Remote | Hiring SRE/Infra, Cryptographers, Data Engineers, Dev-Rel Engineers, Product Managers, Security Engineers and Mobile Engineers | All Levels | FULLTIME, ONSITE, REMOTE, INTERNS, VISA | https://celo.org cLabs is one of the many companies working on Celo, an open-source permissionless platform that makes financial tools accessible to anyone with a mobile phone. Using a novel decentralized PKI, Celo lets you send cryptocurrency to phone numbers in a fully decentralized way. Additionally, Celo uses stable-value tokens pegged to fiat currencies, like the US Dollar, to minimize volatility, and crucially allows transaction fees to be paid with these tokens. To make sure that the platform is scalable and fast enough for day-to-day use, Celo uses a new Proof-of-Stake protocol with fast block times and one block finality. Further, it uses SNARK-based proofs to allow light clients to sync with the chain near instantly. The protocol is now live (run by hundreds of entities) and we are now working with organizations such as GiveDirectly on an open-source social payments app (Valora) that looks and feels like Venmo, yet is fully decentralized. Investors: Andreessen Horowitz (a16z), Polychain, General Catalyst, Coinbase, Reid Hoffman and Jack Dorsey, among others. Stack: Typescript, Solidity, Go, React Native, Python, Android, iOS, Rust, zk-SNARKs Team backgrounds: Google, Facebook, Apple, Microsoft, Square, Zcash, QEDIT, MIT, Stanford (~100 people today) More about us here: Code: https://github.com/celo-org/celo-monorepo and https://github.com/celo-org/celo-blockchain Blog: https://medium.com/celoorg Chat: https://chat.celo.org Mobile App: https://valoraapp.com Mainnet Stats: https://thecelo.com and https://stats.celo.org