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Harshal Mahajan

Senior Frontend Developer @CDK Global | React JS | Redux Toolkit | JavaScript | HTML | CSS

Pune City

10+ years of work experience

CDK Global
Apr 20242 yrs 5 mosPresent

Pune District, Maharashtra, India

● Design and develop scalable React and TypeScript applications using React Hooks, React Router, Redux Toolkit, and Redux Saga. ● Design, publish, and maintain a shared npm package containing 20+ reusable UI components, accelerating cross-project adoption, improving UI consistency, and reducing development effort across engineering teams. ● Maintain high code quality by developing comprehensive unit tests with Jest and React Testing Library, consistently achieving over 90% code coverage. ● Serve as Defect Champion, leading root-cause analysis and preventive engineering initiatives to reduce recurring production issues and improve application stability. ● Optimize Webpack builds through code splitting, asset optimization, and bundle analysis, reducing bundle size, improving application load times, and enhancing deployment efficiency. ● Lead comprehensive code reviews and mentor 3–5 engineers, actively promoting modern coding standards and frontend engineering best practices. ● Develop business-critical features by integrating RESTful APIs and managing complex application state with Redux Toolkit and Redux Saga. ● Contribute to CI/CD pipelines and automated release workflows using Harness, improving deployment reliability and engineering process efficiency.
Calibo
Aug 20203 yrs 9 mosApr 2024

Pune Division, Maharashtra, India

● Developed reusable React components using React Hooks, Context API, and Redux to build scalable and maintainable frontend applications. ● Built reusable component libraries and design systems using Storybook, significantly improving UI consistency and development efficiency. ● Improved application performance through component memoization, lazy loading, and bundle optimization, reducing initial page load time by 35%. ● Engineered robust RESTful API integrations to power complex, data-heavy business workflows. ● Partnered closely with product and UX design teams to translate wireframes into intuitive, user-centric digital interfaces. ● Ensured responsive user experiences and cross-browser compatibility across modern browsers and devices. ● Evaluated teammate code submissions and mentored engineers to align deliverables with modern architectural patterns. ● Contributed to CI/CD pipelines using Jenkins, streamlining build automation and deployment workflows for React applications.
Times Internet
Feb 20191 yr 7 mosAug 2020

Bhavdhan, Pune

● Developed and optimized highly scalable, responsive React applications tailored to handle high-traffic volume workflows. ● Constructed reusable UI components and implemented performant client-side state management patterns via Redux. ● Integrated RESTful APIs using Axios and optimized asynchronous data fetching to improve application responsiveness. ● Refactored legacy code and optimized browser rendering performance by identifying and eliminating client-side bottlenecks. ● Collaborated effectively with product managers, UX designers, and backend engineering teams to deliver features targeting improved user retention. ● Resolved legacy UI defects and shipped platform enhancements based directly on data-driven customer feedback.
SCORG Technologies Pvt Ltd
Jul 20171 yr 8 mosFeb 2019

Pune, Maharashtra, India

● Translated detailed PSD/Figma designs into pixel-perfect, responsive web interfaces using HTML5, CSS3, SCSS, Bootstrap, and JavaScript. ● Created fluid, interactive user experiences utilizing jQuery and custom CSS animations. ● Optimized frontend assets to improve page load performance and overall user experience. ● Applied on-page SEO best practices, optimizing semantic HTML markups and metadata configurations to boost natural search rankings.
Pasistence Consultancy Services Pvt Ltd
Oct 20151 yr 8 mosMay 2017

Pune District, Maharashtra, India

● Developed responsive websites and landing pages from Figma/PSD designs using HTML5, CSS3, SCSS, Bootstrap, and JavaScript. ● Built responsive web layouts, cross-browser landing pages, and interactive transactional email templates using Bootstrap and jQuery. ● Maintained existing web applications, troubleshooting platform anomalies and browser-specific bugs. ● Implemented foundational SEO metadata structures and semantic standards to enhance site discoverability.
GitHub
@imharshm

Harshal’s AI Stack

claude code
claude code
cursor
cursor
gemini
gemini
github copilot
github copilot

Education

North Maharashtra University

Bachelor of Engineering (BE), Computer Engineering

North Maharashtra University

20094 yrs2013

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Headline

Senior Frontend Developer @CDK Global | React JS | Redux Toolkit | JavaScript | HTML | CSS

About

Senior Front-End Engineer with 10+ years of experience designing and delivering enterprise-scale React and TypeScript applications. Expertise in frontend architecture, Microfrontends, Monorepos, Backend for Frontend (BFF), design systems, reusable component libraries, performance optimization, accessibility (WCAG), and CI/CD. Proven track record of leading technical initiatives, mentoring engineers, improving production stability, and delivering scalable, high-quality frontend solutions in Agile environments. AREAS WORKED ON: ● Develop scalable React and TypeScript applications across two enterprise projects using Microfrontend and Monorepo architectures, enabling independent feature delivery and reducing code duplication. ● Design, publish, and maintain an internal npm package comprising 20+ reusable React components, accelerating cross-project adoption and ensuring consistent UI standards. ● Improve application performance through code splitting, lazy loading, bundle optimization, rendering optimization, and Webpack tuning to deliver faster, more responsive user experiences. ● Develop scalable asynchronous data flows by integrating REST APIs with Backend for Frontend (BFF) services using Redux Toolkit and Redux Saga. ● Develop comprehensive unit tests using Jest and React Testing Library, consistently maintaining 90%+ code coverage and improving application reliability. ● Serve as Defect Champion, leading cross-functional root-cause analysis and implementing preventive engineering practices to reduce recurring production issues and improve production stability.

Location

Pune City

AI stack

claude code

cursor

gemini

github copilot

Work experience

Senior Software Engineer at CDK Global, Apr 2024 - Present · 2 yrs 5 mos, Pune District, Maharashtra, India, ● Design and develop scalable React and TypeScript applications using React Hooks, React Router, Redux Toolkit, and Redux Saga. ● Design, publish, and maintain a shared npm package containing 20+ reusable UI components, accelerating cross-project adoption, improving UI consistency, and reducing development effort across engineering teams. ● Maintain high code quality by developing comprehensive unit tests with Jest and React Testing Library, consistently achieving over 90% code coverage. ● Serve as Defect Champion, leading root-cause analysis and preventive engineering initiatives to reduce recurring production issues and improve application stability. ● Optimize Webpack builds through code splitting, asset optimization, and bundle analysis, reducing bundle size, improving application load times, and enhancing deployment efficiency. ● Lead comprehensive code reviews and mentor 3–5 engineers, actively promoting modern coding standards and frontend engineering best practices. ● Develop business-critical features by integrating RESTful APIs and managing complex application state with Redux Toolkit and Redux Saga. ● Contribute to CI/CD pipelines and automated release workflows using Harness, improving deployment reliability and engineering process efficiency.

User Experience Engineer at Calibo, Aug 2020 - Apr 2024 · 3 yrs 9 mos, Pune Division, Maharashtra, India, ● Developed reusable React components using React Hooks, Context API, and Redux to build scalable and maintainable frontend applications. ● Built reusable component libraries and design systems using Storybook, significantly improving UI consistency and development efficiency. ● Improved application performance through component memoization, lazy loading, and bundle optimization, reducing initial page load time by 35%. ● Engineered robust RESTful API integrations to power complex, data-heavy business workflows. ● Partnered closely with product and UX design teams to translate wireframes into intuitive, user-centric digital interfaces. ● Ensured responsive user experiences and cross-browser compatibility across modern browsers and devices. ● Evaluated teammate code submissions and mentored engineers to align deliverables with modern architectural patterns. ● Contributed to CI/CD pipelines using Jenkins, streamlining build automation and deployment workflows for React applications.

Senior UI Engineer at Times Internet, Feb 2019 - Aug 2020 · 1 yr 7 mos, Bhavdhan, Pune, ● Developed and optimized highly scalable, responsive React applications tailored to handle high-traffic volume workflows. ● Constructed reusable UI components and implemented performant client-side state management patterns via Redux. ● Integrated RESTful APIs using Axios and optimized asynchronous data fetching to improve application responsiveness. ● Refactored legacy code and optimized browser rendering performance by identifying and eliminating client-side bottlenecks. ● Collaborated effectively with product managers, UX designers, and backend engineering teams to deliver features targeting improved user retention. ● Resolved legacy UI defects and shipped platform enhancements based directly on data-driven customer feedback.

UI Developer at SCORG Technologies Pvt Ltd, Jul 2017 - Feb 2019 · 1 yr 8 mos, Pune, Maharashtra, India, ● Translated detailed PSD/Figma designs into pixel-perfect, responsive web interfaces using HTML5, CSS3, SCSS, Bootstrap, and JavaScript. ● Created fluid, interactive user experiences utilizing jQuery and custom CSS animations. ● Optimized frontend assets to improve page load performance and overall user experience. ● Applied on-page SEO best practices, optimizing semantic HTML markups and metadata configurations to boost natural search rankings.

UI Developer at Pasistence Consultancy Services Pvt Ltd, Oct 2015 - May 2017 · 1 yr 8 mos, Pune District, Maharashtra, India, ● Developed responsive websites and landing pages from Figma/PSD designs using HTML5, CSS3, SCSS, Bootstrap, and JavaScript. ● Built responsive web layouts, cross-browser landing pages, and interactive transactional email templates using Bootstrap and jQuery. ● Maintained existing web applications, troubleshooting platform anomalies and browser-specific bugs. ● Implemented foundational SEO metadata structures and semantic standards to enhance site discoverability.

Education

Bachelor of Engineering (BE), Computer Engineering, North Maharashtra University

Public links

github: https://github.com/imharshm