ivanrybakov67

Worked on a prediction market platform development team that grew to over 100,000 users. Collaborated within a cross-functional product team of 10 members (6 developers, designer, analyst, QA, PM) following weekly sprint cycles. - Initiated migration of legacy code to Feature-Sliced Design architecture, separated layers and eliminated circular dependencies between modules, accelerating new feature time-to-market by 2x. - Led development of an internal wallet and transaction library using Wagmi and Viem, extracted functionality into a dedicated layer with typed hooks, enabling the team to reuse this layer across all market scenarios. - Migrated dynamic filter calculations in transaction forms to Next.js server-side rendering with Zustand state hydration, eliminating client-side data refetching. Established this approach as a common pattern and extended it to other pages with complex filters. - Optimized React components by eliminating unnecessary re-renders and splitting heavy modules into separate chunks, improving Lighthouse Performance score from 56 to 92 and reducing bundle size by one-third. - Built a Docker image and configured a CI/CD pipeline with Jest and Cypress runs on critical scenarios (payments, key market flows), ensuring regression detection before release and stabilizing deployments. - Developed an onboarding repository for interns with documentation on workflows and Web3-specific practices, reducing their time to independent development to 2 months.