Led 3 other engineers and 2 TPMs in a migration of cryptocurrency keys backing $3B of customer funds onto a multi-party computation signing platform

Drove disaster recovery compliance by creating scripts and runbooks for secure offline backups and restores of multiple databases hosting ~800GB of customer data

Developed a new internal web service that became part of the critical path in generating cryptocurrency wallets

Implemented a zero-downtime full data store migration for Ruby and Java applications hosted across 26 AWS regions and handling hundreds of reads/writes per second

Improved multiple services spanning >100K lines of code by leading a team of 3 engineers in upgrading library versions, rebuilding an integration testing framework, raising unit test coverage from 10% to 80%, creating telemetry dashboards, and writing documentation

Built the internal identity and access management system and integrated an external password management service for all 80 employees in the company

Enabled the launch of customer lending in Nigeria and Mexico by implementing bank API integrations and backend logic for transactions

Achieved data security compliance with Indian regulations by architecting the encryption of sensitive customer data and hardening of ~40 cloud-hosted servers across 2 regions