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sergey

Senior Frontend DeveloperIT One · Lead Frontend DeveloperOpen to Work

About

Senior Frontend Developer with 10+ years of experience in fintech, e-commerce, and enterprise systems. Specialised in React, Next.js and TypeScript, with a strong focus on frontend architecture, engineering practices, CI/CD and design systems to accelerate delivery and improve reliability.

  • Worked on platforms serving up to 10M users; improved development speed by up to 40% and reduced production incidents by ~20%.
  • Experienced in building CI pipelines, test automation (Jest, Vitest, Playwright, Cypress), micro-frontends and Feature‑Sliced Design for scalable teams.
  • Proven leader: built and scaled frontend teams, launched shared component libraries and improved onboarding and maintainability.

Skills

FrontendReactNext.jsTypeScriptJavaScript (ES6+)HTML5CSS3Tailwind CSSSCSS ModulesState Management & DataRedux ToolkitZustandWebSocketsGraphQL (Apollo)REST APIsArchitecture & PatternsMicro-frontendsFeature-Sliced DesignComponent-driven developmentDesign systemsModular architectureTesting & CI/CDJestVitestCypressPlaywrightStorybookCI/CDJenkinsBackend & DevOpsNode.jsNestJSExpressPHPLaravelDockerAWSDatabases & CachingPostgreSQLRedisBlockchain & Web3ethers.jsweb3.jsSolidityBuild Tools & BundlersViteWebpackNPMNode package managementSoft Skills

Resume

LinkedIn Rear Cognitive

Lead Frontend Developer

Contact sergey

sergey - Senior Frontend Developer