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$180–240K / year · New York, US
Harmony builds open, sharded blockchain infrastructure using state sharding and proof-of-stake, targeting global-scale applications in DeFi, NFTs, social gaming and social AI.
Harmony is a blockchain infrastructure company founded in 2018 that builds a high-performance, open blockchain using state sharding and secure proof-of-stake consensus. Its stated aim is to address the blockchain scalability trilemma - the tension between scalability, security and decentralisation - and to serve applications at global scale, with a stated vision of serving 10 billion people.
The company's sharded platform has demonstrated 10,184 transactions per second across 25 shards with 10,000 nodes. Technical work spans blockchain protocol design, state sharding, proof-of-stake consensus, distributed systems and compiler design. The infrastructure is aimed at applications in decentralised finance, non-fungible tokens, social gaming and social AI.
Harmony states that it works on open development principles and practises transparency with its community, including publishing team performance reviews publicly. The company describes its approach as combining academic rigour with practical engineering, and frames its mission as scaling trust for large populations and building a radically fair economy. Its founder holds a PhD in compilers and has worked at Google Maps and previously exited a startup to Apple.