Sr Frontend Developer

Name: Venkata Rahul Email: **************@*****.***

Ph#: 774-***-****

LinkedIn: https://www.linkedin.com/in/m-v-rahul-78b396180/

Role: Sr Frontend Developer

PROFESSIONAL SUMMARY:

• Over 5 years of professional experience in designing, developing, testing, and maintaining modern web applications using React.js, Angular.

• Strong proficiency in writing semantic, accessible, and SEO-friendly HTML to create well-structured web applications while ensuring cross-browser compatibility.

• Skilled in leveraging Bootstrap’s grid system, UI components, and utility classes to rapidly develop mobile-first and responsive web designs.

• Strong expertise in JavaScript (ES6+), TypeScript, and object-oriented programming, with hands-on experience in React.js, Angular.js, and Vue.js to build scalable and high-performing applications.

• Proficient in Adobe Photoshop and Adobe XD for UI/UX design, wireframing, and prototyping,ensuring visually compelling digital experiences.

• Developed Node.js middleware to validate JWTs and refresh access tokens using secure HTTP-only cookies and localStorage for robust authentication workflows.

• Secured Node.js applications by implementing OAuth 2.0 and JWT-based authentication, ensuring token validation, expiration handling, and secure session management.

• Developed middleware in Node.js for validating JWTs and refreshing access tokens using secure HTTP-only cookies and localStorage.

• Strong experience in Figma for collaborative design, creating interactive prototypes, UI components, and design systems for streamlined development workflows.

• Expertise in Flutter app development, building high-performance, cross-platform mobile applications with custom widgets, animations, and Firebase integration.

• Proficient in integrating Java-based backend APIs with modern frontend frameworks like React, ensuring efficient and secure communication using RESTful and GraphQL services.

• Experience working with Java (Spring Boot) in full-stack applications for building and consuming REST APIs, implementing JWT-based authentication, and handling business logic in scalable microservices.

• Experience with HTML5 APIs like Web Storage (localStorage & sessionStorage), Geolocation API, Drag-and-Drop API, WebSockets, and IndexedDB, enhancing user interactivity and performance.

• Proficientin statemanagement using Redux for React,NgRx for Angular, and Vuex for Vue.js, ensuring seamless data flow and optimized performance across large-scale applications.

• Strong knowledge of CSS3 and modern UI frameworks, including Bootstrap, Material-UI, Tailwind CSS, and Ant Design, to create visually appealing and mobile-friendly interfaces for React, Angular, and Vue projects.

• Hands-on experience in progressive web applications (PWA) development using React.js, Angular.js, and Vue.js,enhancing performance and offline accessibility.

• Strong understanding of RESTful API integration, handling asynchronous operations using Axios in React and Vue,and HttpClient in Angular, ensuring efficient frontend-backend communication.

• Proficient in unit testing and end-to-end testing using tools like Jest (React), Jasmine/Karma (Angular), and Cypress (Vue.js) to ensure high-quality, bug-free applications.

• Skilled in version control and collaboration tools like Git, GitHub, GitLab, and Bitbucket, ensuring efficient source code management for React, Angular, and Vue projects.

• Experience working in Agile and Scrum environments, actively participating in daily stand-ups, sprint planning, and code reviews for React, Angular, and Vue development.

TECHNICAL SKILLS:

Languages

JavaScript, SQL, Java, React (V16.8), Node JS,

UI Web Technologies

HTML/HTML5, CSS/CSS3, DHTML, XML, XHTML, XSLT, JavaScript, AJAX, jQuery, JSON, Apache, PHP, DOM, RESTful, SOAP services, web services

Databases

Oracle 11g/12C, MS SQL Server, My SQL

Operating Systems

Windows 98/7/8/10/XP, UNIX, LINUX

Testing & Debugging Tools

Firebug, Bugzilla, Chrome Developer Tools.

Web/App Server/Services

Apache Tomcat, Web Logic, RESTful, SOAP

Workflow Tool kit

Webpack, Jenkins, Grunt, Gulp

Developer Tools

Visual Studio Code, Notepad++, Eclipse IDE, Sublime Text, Atom, Web storm, MS Office, GIT, SVN, Bit Bucket

PROFESSIONAL EXPERIENCE:

Client: Charles Schwab, Miami, FL May 2023 – Till Date

Role: Sr. Frontend Developer

Responsibilities:

• Developed and maintained responsive, mobile-first user interfaces in React 18, leveraging modern UI libraries such as Material-UI, Tailwind CSS, and Chakra UI, while optimizing performance with concurrent rendering.

• Integrated unit and component testing in React 18 using Jest, React Testing Library, and Cypress, ensuring high reliability and maintainability of components while following best testing practices.

• Developed server-side rendered applications using Next.js improving performance SEO and initial page load times by pre-rendering content on the server

• Optimized Node.js server performance using clustering and worker threads, enabling load balancing and improved throughput under high traffic conditions.

• Built and maintained RESTful APIs using Node.js and Express.js for CRUD operations, middleware logic, and secure integration with applications.

• Designed and implemented efficient API queries in GraphQL, reducing over-fetching and under-fetching of data for optimized performance.

• Secured Node.js applications by implementing OAuth 2.0 and JWT-based authentication, ensuring token validation, expiration handling, and secure session management.

• Configured Redux store using combineReducers and modular reducers ensuring better organization and scalability for complex state-driven applications

• Created high-fidelity UI/UX designs using Figma enabling pixel-perfect mockups, responsive layouts, and real-time design collaboration with stakeholders and developers

• Optimized Node.js applications by implementing clustering and worker threads, ensuring load balancing and improved performance under high traffic.

• Consumed Java-based RESTful APIs in React 18 applications using Axios and async/await, ensuring secure token handling and optimized data fetching from backend microservices.

• Collaborated with backend teams developing in Java (Spring Boot), helping design efficient data contracts and integrating GraphQL queries for dynamic data consumption.

• Configured Webpack for bundling JavaScript, CSS, and assets optimizing application performance by reducing file size and improving loading speed

• Utilized HTML5 forms with various input types (text, email, password, date, file, radio, checkbox) and applied validation attributes (required, pattern, maxlength) to enhance user input handling.

• Optimized performance in JavaScript applications by implementing debouncing, throttling, and efficient DOM manipulations to enhance responsiveness.

• Configured tsconfig.json in TypeScript projects to optimize compiler options, enabling strict type checking, module resolution, and enhanced debugging.

• Utilized CSS3 media queries to create fully responsive designs that adapt dynamically to various devices, including mobile, tablet, and desktop views.

• Managed version control efficiently using Git ensuring seamless collaboration by tracking changes, merging branches, and resolving conflicts in code repositories

• Created and consumed APIs including RESTful APIs, GraphQL, third-party APIs, worked with Azure API Management, and integrated Azure, Office 365, Botify APIs

• Set up auto-scaling and load balancing in AWS using Elastic Load Balancer (ELB) and Auto Scaling Groups to handle traffic spikes efficiently.

Environment: Angular,HTML, CSS3, Sass, Less, JavaScript, ES6, Botify, Cypress,Bootstrap, Ajax,NextJS,React JS, Redux, Flex, My SQL, XML, XSL, XSLT, JSON, Git hub, Restful API, AWS, JIRA, Jasmine and Web Strom

Client: State Farm, Bloomington, IL Jul 2021 –Jul 2022

Role: Sr Frontend Developer

Responsibilities:

• Utilized React 17’s concurrent rendering to improve performance by allowing multiple state updates to be processed simultaneously without blocking the UI, enhancing responsiveness in complex applications.

• Implemented automatic state batching in React 17 to group multiple setState updates within event handlers and asynchronous functions, minimizing unnecessary re-renders and improving application efficiency.

• Managed authentication logic and user credential flows for React frontend and Node.js backend,ensuring encrypted transmission and secure storage of sensitive data.

• Integrated Node.js backends with Redis caching, query optimization, and pagination to improve REST API response times and reduce database load.

• Managed user session flows by implementing Node.js authentication logic using Passport.js, ensuring secure token storage and encrypted data transmission.

• Implemented static site generation (SSG) and incremental static regeneration (ISR) in Next.js optimizing content updates while maintaining fast loading speeds

• Optimized state management in Redux by using selectors and memoization with Reselect reducing unnecessary re-renders and improving application efficiency.

• Integrated frontend with Java microservices, managing authentication via JWT and ensuring secure session handling through custom middleware logic in Node.js and Java.

• Optimized data flow between frontend and backend by leveraging GraphQL APIs connected to a Java-based service layer, enabling more efficient UI rendering in React.

• Developed GraphQL schemas with queries, mutations, and subscriptions, ensuring structured and scalable API design.

• Implemented Webpack code splitting using splitChunks ensuring efficient lazy loading and improving initial page load time for large applications

• Implemented HTML5 tables with proper accessibility attributes, utilizing thead, tbody, tfoot, and caption for better data structuring and readability.

• Built reusable design systems in Figma using components, variants, and auto-layout ensuring consistency, scalability, and faster iteration across projects

• Handled errors effectively in JavaScript applications using try-catch blocks, custom error classes, and centralized error logging to ensure application stability.

• Implemented utility types such as Partial, Pick, Omit, and Readonly in TypeScript to improve flexibility while maintaining type safety.

• Enhanced UI consistency using CSS3 preprocessors like SASS and LESS, leveraging mixins, nesting, and variables to write modular and reusable stylesheets.

• Utilized Git branching strategies like Git Flow and feature branching improving workflow organization and enabling smooth development and deployment cycles

• Set up auto-scaling and load balancing in AWS using Elastic Load Balancer (ELB) and Auto Scaling Groups to handle traffic spikes efficiently.

• Secured Node.js applications by implementing authentication mechanisms such as JWT, OAuth, and session-based authentication with Passport.js.

• Optimized REST API performance using caching mechanisms like Redis, query optimization, and pagination to reduce response time and database load.

• Managed CI/CD security by integrating tools like SonarQube and Snyk, scanning for vulnerabilities and ensuring compliance with security best practices.

Environment: React.js, Redux,ES6, React HOC, NextJS, React Observables, Cypress, react hooks, React Async Await, React Promises, Saga.JS, Angular.JS, SCSS, CORS, WCAG, XSS, SASS, LESS, Java, MySQL, Mongo DB, GraphQL, Visual Studio, Sublime Text, Webpack, Thunk, JWT, HTML5, CSS3, Ajax, Bootstrap.

Client: SB Systems, Hyderabad, India Jun 2019 – Jun 2021

Role: Frontend / UI Developer

Responsibilities:

• Implemented React 16’s Streaming SSR, allowing the application to send UI chunks progressively to the client, significantly improving perceived load times and enhancing SEO for dynamic content.

• Implemented React 16’s useDeferredValue to enhance real-time search experiences by preventing unnecessary re-renders when typing, ensuring smoother interactions in large data-driven applications.

• Utilized Next.js API routes to create backend endpoints within the same project simplifying server-side logic and reducing the need for external backend services.

• Scheduled automated background tasks in Node.js using node-cron, managing email notifications, log cleanup, and scheduled backups.

• Deployed Node.js applications on AWS using Lambda, EC2, and API Gateway, ensuring high availability, scalability, and secure endpoint exposure.

• Designed and consumed GraphQL APIs in Node.js microservices using Apollo Server, enabling efficient data querying, mutations, and subscription handling.

• Implemented Redux with middleware like Redux Thunk and Redux Saga enabling asynchronous data fetching and side effect management for better performance

• Integrated Apollo Client in frontend applications to manage state and fetch data from GraphQL APIs efficiently.

• Worked with Java-based APIs for fetching dynamic data, using Redux-Saga to manage side effects and ensure reliable integration with backend services written in Spring MVC.

• Wrote client-side code to interact with secure Java (Spring Boot) REST endpoints, applying principles of OAuth2.0, CORS, and content negotiation for a secure web architecture.

• Optimized assets in Webpack by using loaders for CSS, images, and fonts enabling seamless integration and better performance across different file types

• Embedded external content in HTML5 using iframe for maps, videos, and third-party widgets while applying sandbox and security policies to prevent vulnerabilities.

• Worked with the Document Object Model (DOM) in JavaScript, utilizing query selectors, event listeners, and dynamic element manipulation to create interactive UIs.

• Developed interactive Figma prototypes with transitions and animations simulating real user flows for usability testing and stakeholder presentations

• Performed advanced debugging in TypeScript applications using source maps, inline error reporting, and integration with modern IDEs like VS Code.

• Implemented dark mode and theme switching in CSS3 using custom properties, prefers-color-scheme media queries, and JavaScript integration.

• Implemented Git hooks for pre-commit and pre-push validations automating tasks like code linting, formatting, and security checks before committing changes

• Implemented logging and monitoring using AWS CloudWatch and AWS CloudTrail, tracking system performance and security audits.

• Scheduled automated tasks in Node.js using cron jobs and the node-cron package, managing background jobs like email notifications and data backups.

• Deployed REST APIs on cloud platforms like AWS (Lambda, EC2, API Gateway), Heroku, and DigitalOcean, ensuring high availability, scalability, and monitoring with Postman and New Relic.

Environment: React.js, Redux, Angular 2, ES6, Redux, NextJS, Typescript, JavaScript, HTsML5, CSS3, Ajax, Bootstrsap.JS, Angular.JS, WCAG, CORS, SASS, LESS, Java, Oracle, MySQL, REST, Node.JS, Chrome, Visual Studio, Sublime Text, GitHub, Selenium, Scrum, Agile, AWS, Jenkins, Docker, Kubernetes, JSON, XML, Jira, Linux.

EDUCATIONAL DETAILS:

• Master of Science in Computer Science, River University, New Hampshire, USA.

• Bachelor of Technology in Computer Science Engineering, KLUH University, India.

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