ABHISHEK UPADHYAY 
Abhishek Upadhyay
Abhishek UpadhyaySenior Frontend Engineer
Open to new opportunities

Hi, I'm Abhishek Upadhyay

I'm a Senior Frontend Engineer crafting high-impact web experiences for 4.5M+ users.

I'm a Senior Frontend Engineer specializing in **micro-frontend architecture, TypeScript-based component systems, and Generative AI interfaces**. Currently building **scalable, enterprise-grade platforms at Celebal Technologies**, with a focus on performance, maintainability, and exceptional user experiences.

Tech stack
ReactReduxJavaScriptNext.jsTypeScriptNode.jsMongoDBTailwind CSSPostgreSQL
4.5M+
Users Impacted
30%
Development Effort Reduction
60%
Faster Content Creation
40%
Faster Deployment Velocity
25%
Fewer Post-Release Bugs
92
Lighthouse Performance Score

Work Experience

  1. Celebal Technologies

    Apr 2023 – Present

    Software Engineer

    • Architected scalable React.js/TypeScript micro-frontend solutions using Webpack 5 Module Federation across 15+ concurrent projects, improving Core Web Vitals from 70 to 92, reducing technical debt by 25%, and cutting deployment time by 40%.
    • Developed and delivered enterprise-scale React.js and Next.js applications across banking, AI, analytics, and data platforms, including an AI-powered Virtual Relationship Manager serving 4.5M+ users.
    • Built end-to-end applications using React.js, Next.js, Node.js, Express.js, MongoDB, REST APIs, and TypeScript, implementing scalable frontend architectures and backend integrations for high-traffic enterprise applications.
    • Engineered real-time and conversational AI experiences using WebRTC, WebSockets, SSE, Azure Speech Services, Direct Line API, Bot Framework, RAG, and Generative AI, optimizing streaming, state synchronization, and asynchronous communication workflows.
    • Improved application performance through lazy loading, code splitting, memoization, optimized state management, and bundle optimization, while implementing authentication, RBAC, secure token management, API security, and automated testing.
    • Mentored and collaborated with cross-functional engineering teams, establishing code quality standards, reusable component patterns, code reviews, and Agile development practices to improve development efficiency and production quality.
    React.jsNext.jsTypeScriptJavaScriptRedux ToolkitNode.jsExpress.jsMongoDBPostgreSQLREST APIsWebSocketsWebRTCAzureGenerative AIRAGModule FederationWebpack 5Tailwind CSSSCSSHighchartsAzure DevOpsGit
  2. Celebal Technologies

    Sep 2022 – Apr 2023

    Software Engineer Intern

    • Developed responsive and reusable React.js, Redux, JavaScript, HTML, CSS, and Bootstrap components for enterprise web applications and integrated them with RESTful backend APIs.
    • Refactored UI modules into reusable, component-driven architectures, improving code maintainability, consistency, and frontend performance across application modules.
    • Collaborated with senior engineers and QA teams throughout Agile sprint cycles, contributing to unit testing, debugging, cross-browser compatibility, code reviews, and production issue resolution.
    ReactJavaScriptReduxHTML5CSS3Node.jsREST APIsBootstrap

Technical skills

Technologies, frameworks, and tools I work with · 12 categories · 77+ technologies

ReactJavaScriptHTML5ViteMongoDBNode.jsMicroservices ArchitectureCursorWindsurfAutomated Test GenerationReduxContext APITailwind CSSBootstrapMUICSS FlexboxMicro-Frontend ArchitectureConfiguration-driven DevelopmentModular UI DevelopmentCode ReviewsCross-functional CollaborationCore Web VitalsMemoizationRendering OptimizationSEOSSR, CSR, SSG, and ISRMicrosoft Graph APISocket.ioJestCode ReviewsUI Appearance & Experience TestingrechartsWebpackNVMGitHubAzure DevOpsMicrosoft AzureCloudflareDockerReactJavaScriptHTML5ViteMongoDBNode.jsMicroservices ArchitectureCursorWindsurfAutomated Test GenerationReduxContext APITailwind CSSBootstrapMUICSS FlexboxMicro-Frontend ArchitectureConfiguration-driven DevelopmentModular UI DevelopmentCode ReviewsCross-functional CollaborationCore Web VitalsMemoizationRendering OptimizationSEOSSR, CSR, SSG, and ISRMicrosoft Graph APISocket.ioJestCode ReviewsUI Appearance & Experience TestingrechartsWebpackNVMGitHubAzure DevOpsMicrosoft AzureCloudflareDocker
Next.jsTypeScriptCSSExpressJSMongooseMySQLPostgreSQLClaude CodeGitHub CopilotAI-Guided Refactoring & AuditingRedux ToolkitZustandSassStyled ComponentsResponsive Web DesignCSS GridModule FederationReusable ComponentsComponent LibrariesAgileLighthouseLazy LoadingCode SplittingCaching TechniquesAccessibilityREST APIsWebSocketsWebRTCPlaywrightFunctional TestingHighchartsApexChartsnpmGitGitLabJiraFirebaseGoogle Tag ManagerNext.jsTypeScriptCSSExpressJSMongooseMySQLPostgreSQLClaude CodeGitHub CopilotAI-Guided Refactoring & AuditingRedux ToolkitZustandSassStyled ComponentsResponsive Web DesignCSS GridModule FederationReusable ComponentsComponent LibrariesAgileLighthouseLazy LoadingCode SplittingCaching TechniquesAccessibilityREST APIsWebSocketsWebRTCPlaywrightFunctional TestingHighchartsApexChartsnpmGitGitLabJiraFirebaseGoogle Tag Manager