eugenptr

Built a mobile wallet for web 2 users, abstracting away addresses, signatures, key management and gas payment. Created a gassless experience using account abstraction (ERC-4337). Enabled users to sign transactions with biometrics (FaceID/fingerprint) using passkeys stored in the secure enclave of the phone.

Worked in their software shop department, building custom products for their clients. Built a multi-chain marketplace that provides a sleek user experience by completely abstracting the underlying chains from the users. Enabled dApps to integrate logic too expensive to be run on the blockchain (such as statistical analysis), by running intensive computation in an off-chain zkVM which generates results whose authenticity can be cryptographically verified on-chain. Launched a token & airdrop for a client, delivering the snapshot and claiming app. Built APIs, event indexers and other backend services for various projects.

The client, a blockchain startup from SF, needed to collect and organize governance-related data from multiple blockchains and offchain sources. Boosted performance by 10x by redesigning the backend, and applying various optimization strategies. Developed a notification service to promptly inform users about key events in blockchain protocols.

The client, a UK data virtualization startup, needed real-time data fetching from various data stores, infrastructure and accessibility improvements. Extended the system, building modules that leveraged socket connections and multithreading to fetch and process data from different sources. Reduced friction and technical barriers in managing user permissions by 80% by implementing an Access Control service.

Worked on an e-commerce platform powering over 100 online stores around the world, serving more than 5 million users. Improved understanding of user behaviour, implementing a tool for capturing, processing and visualising user interaction data. Built reusable frontend components and backend services.