Oleksandr Heiets

Background

About Oleksandr Heiets

Senior software engineer with 10+ years building large-scale product applications using React, TypeScript, and modern frontend architecture practices.I specialize in system design, frontend architecture modernization, performance optimization, and cross-team engineering initiatives that improve product metrics and developer productivity.I have led domain migrations, introduced design systems, improved observability, and mentored engineers into senior roles.Core Impact• Frontend architecture design and system migrations• Design system implementation and adoption• Performance optimization and observability improvements• Delivery of complex product features across multiple domains• Cross-team technical leadership and frontend initiatives• Mentorship and senior engineer development• Developer experience and CI/CD improvementsTechnical stack:JavaScript (ES6+), TypeScript, React, Next.js, Redux, GraphQL, REST, WebSockets, CSS in JS, TailwindCSS, Micro Frontends, Monorepos, Electron, Node.js, NestJS, CI/CD, Testing (Jest, Playwright), Observability (Sentry, Datadog)Technical skills:Frontend architecture & development, system design, complex system refactoring, performance & cost optimization, frontend infrastructure migration, A/B testing, design systems, developer experience (DX) improvements, CI/CD automation, observability & reliabilityLeadership:Technical mentorship, architecture reviews, technical interviews, system design presentations, cross-team collaboration, knowledge-sharing sessions, leading frontend initiatives