Pavel Rybinstev

Led extraction of the accounting domain from a Node.js monolith into an event-driven microservice. Isolated financial logic, introduced Kafka-based ingestion, and re-architected transaction processing to support per-customer ordering via partitioning. Implemented feature-flag-driven deployment workflows for controlled rollouts and rapid rollback in a high-risk financial system.

Designed and implemented RPC services and scalable backend infrastructure for 300M daily requests with 99.99% availability. Built a production Ethereum Staking-as-a-Service platform to automate validator lifecycle end-to-end, including deposits, provisioning, monitoring, reward indexing, and MEV integration. Improved testing and CI for backend services and deployed changes in billing, staking, and compliance. Implemented end-to-end billing and usage metering for RPC-as-a-Service serving tens of thousands of customers, including compute-unit accounting, fair enforcement, and MEV considerations. Developed wallet-intelligence datasets powering blockchain analytics, including attribution of funds and geographic inference from on-chain activity.

Led backend API and control-plane design translating user intent into DNS/DHCP infrastructure configuration. Implemented targeted config rollout to affected nodes, reducing unnecessary reloads and service disruption. Built versioned config delivery and forward-compatibility mechanisms that ship config ahead of binaries, minimizing downtime. Contributed to hybrid cloud/on-prem deployments and architected scalable backend systems (Go, Python, C#/C++) with microservices and CI/CD.