Hi, I’m
Guru Charan Mannepall
Washington,DC
Summary
Senior Frontend Engineer with 10 years of experience in designing, developing, and optimizing responsive, scalable, and high-performance web applications. Proficient in HTML, CSS, JavaScript (ES6+), React 16+, NextJS, TypeScript, Redux, and NodeJS, with a strong focus on frontend performance optimization, cross-browser compatibility, and state management. Expertise in server-side rendering (SSR), SEO optimization, and WCAG compliance, ensuring accessibility and enhanced user experience. Skilled in Cloud-Native architectures for scalable deployments and backend integration with NodeJS. Well-versed in OAuth2 and OpenID Connect (OIDC) for secure authentication and authorization. Experienced in modern build tools such as Vite and Yarn to streamline development workflows. Adept at working in Agile environments, collaborating cross-functionally to deliver high-quality, secure, and performant applications. Passionate about leveraging the latest web technologies to build accessible, innovative, and future-ready digital experiences.
Overview
11
years of professional experience
Work History
OCTO (Office of Chief Technology Officer)
Sr. React Developer
05.2024 - Current
Job overview
- I currently working on a project called “Destiny”, which aims to completely replace a 20-year-old DMV system for the Department of Motor Vehicles (DMV). This project being built from the ground up using NodeJS, JavaScript, ReactJS, Redux.
- Developed frontend web pages using HTML5, CSS3, JavaScript, REST APIs, NextJS, ReactJS, and Redux.
- Responsible for building reusable components for various modules and creating a Storybook for these components to ensure consistency across the project.
- Developed and maintained scalable backend services using NodeJS, ExpressJS, and NestJS.
- Designed a Micro Frontend architecture using Single SPA, enabling independent deployments.
- Integrated React applications with AWS, GraphQL, and REST APIs.
- Built and optimized SSR-based React apps using NextJS for better SEO and performance.
- Optimized applications to improve performance and scalability.
- Ensured all web applications meet WCAG 2.1 Level AA standards for accessibility, improving usability for users with disabilities.
- Integrated API testing into CI/CD pipelines (Jenkins/GitLab) to enable automated regression runs for SOAP and REST services after each deployment.
T. Rowe Price
Sr. Frontend Developer (React)
09.2021 - 03.2024
Job overview
- Worked with SE4 and Allocation Evaluation teams to develop user interfaces for web and mobile applications.
- Integrated Redux with React to efficiently manage application global state.
- Integrated OAuth2 and OIDC authentication mechanisms into front-end applications, ensuring secure and seamless login experiences for users.
- Implemented automated testing with Jest and Enzyme for React components.
- Automated smoke, sanity, and regression testing using Selenium WebDriver.
- Built and deployed scalable front-end applications using AWS App Runner, ensuring optimal performance and high availability.
- Designed and implemented Micro Front-End Architectures using Single-SPA and Module Federation, enabling modular development and team collaboration.
- Configured and managed AWS Global Accelerator for global load balancing and enhanced security for web applications.
- Implemented efficient file storage and retrieval systems using AWS S3, optimizing media management and enhancing user experience in React applications.
DCCA
Sr. Software Developer
07.2019 - 08.2021
Job overview
- Developing an application for the Medicaid and Children’s Health Insurance Program Financial (MACFin) team, tasked with creating a modern, user-centric financial system for the Centers for Medicare and Medicaid Services (CMS).
- Built modern financial systems for CMS (Centers for Medicare and Medicaid Services) as part of the Medicaid and Children’s Health Insurance Program.
- Developed dynamic web applications using ReactJS, HTML5, CSS3, and Redux.
- Led the development of mobile apps for iOS and Android using React Native.
- Designed and integrated RESTful and GraphQL APIs.
- Worked in an AWS DevOps environment, deploying projects using CI/CD pipelines.
- Collaborated with backend teams to validate and manage JWT tokens for access and refresh operations.
- Collaborated with backend teams to write and deploy Node.js Lambda APIs to AWS.
- Deploying and maintaining accessibility standards (WCAG) using ARIA attributes and semantic HTML.
Florida Blue
IT Developer / ReactJS Developer
01.2018 - 06.2019
Job overview
- Contributed to the design and development of the Operational Dashboard and Event Bus UI project, building it from the ground up using ReactJS, NodeJS, and PostgreSQL. This involved creating scalable, efficient, and responsive user interfaces, integrating real-time data with backend services, and ensuring smooth functionality across different platforms.
- Spearheaded the development of operational dashboards and events bus UI projects using ReactJS.
- Implemented server-side rendering (SSR) with NextJS and integrated JWT authentication.
- Designed and integrated GraphQL APIs into frontend components.
- Utilized Docker and Kubernetes to scale applications and deploy them on AWS.
- Refactored MongoDB search queries to improve performance using Elastic Search.
- Collaborated with cross-functional teams to design and deploy a customer web portal using ReactJS, resulting in enhanced user experience and a 25% increase in engagement within the first quarter of launch.
Cisco Systems
UI Developer
10.2016 - 12.2017
Job overview
- Developed the Cisco App Store from scratch, utilizing React for web applications.
- Contributed to 2.5 releases as part of the Multivmm Scrum Team, focusing on developing a Cisco internal web application, with key responsibilities in web application development and enhancement.
- Designed and built a Cisco App Store from scratch using React and React Native.
- Developed robust and modern frontend architecture involving Node.js, React, and Redux.
- Created reusable components using React and managed state with Redux.
- Integrated API calls and developed server-side logic using NodeJS.
Medline Industries
UI Developer
02.2016 - 09.2016
Job overview
- Implemented and enhanced the user interface for Medline.com, a leading healthcare e-commerce portal. Focused on improving user experience and performance by designing dynamic web pages with HTML5, CSS3, JavaScript, and AngularJS. Developed responsive layouts and optimized cross-browser compatibility, ensuring a seamless experience for end-users.
- Maintained and developed dynamic pages for a healthcare e-commerce portal using AngularJS.
- Built cross-browser compatible, responsive designs using Bootstrap and CSS3.
- Enhanced Medline.com by integrating advanced UI techniques, leading in user engagement and reducing bounce rates, utilizing AngularJS and modern front-end frameworks.
Wal-Mart
Angular JS Developer
06.2015 - 01.2016
Job overview
- As a UI Developer on the Diagnostics Team, my role is to design and develop applications that offer flexibility for merchants, empowering them with insights to drive faster and more informed decision-making.
- Developed user-interactive web pages using AngularJS, D3.js, and JavaScript.
- Built responsive designs for mobile and tablet interfaces and resolved cross-browser issues.
- Integrated RESTful APIs with AngularJS applications, improving data retrieval efficiency by 35% and enhancing user interaction with real-time data updates.
Education
Florida Institute of TechnologyMelbourne, Florida
Masters Degree from Computer Information Systems
01.2015
Jawaharlal Nehru Technological UniversityAnantapur, Andhra Pradesh
Bachelors Degree from Computer Science
01.2011
Skills
- Frontend Libraries/Frameworks: ReactJS, NextJS, Redux, TypeScript
- Languages: JavaScript (ES6), TypeScript, HTML5, CSS3, Bootstrap, SASS, LESS
- Backend: NodeJS/Express, REST APIs, GraphQL
- Testing: Selenium, Jest, Enzyme, Cucumber, Jasmine, Mocha
- Version Control: Git, GitHub, SVN
- Databases: MySQL, MongoDB, PostgreSQL
- CI/CD: Jenkins, Docker, Kubernetes, AWS Lambda
- Authentication & Security: OAuth2, OpenID Connect, JWT, Azure AD, Auth0
- Performance Optimization: Lazy Loading, Code Splitting, SSR, CSR, ISR
- Tools & IDEs: Webpack, Babel, Visual Studio Code, Sublime Text, SonarQube
- UI/UX Tools: Figma, Sketch, Material-UI, Bootstrap, Flexbox, CSS Grid
- Build Tools: Webpack, Vite, npm, yarn
- Version control
- Continuous integration
Timeline
Sr. React Developer
OCTO (Office of Chief Technology Officer)
05.2024 - Current
Sr. Frontend Developer (React)
T. Rowe Price
09.2021 - 03.2024
Sr. Software Developer
DCCA
07.2019 - 08.2021
IT Developer / ReactJS Developer
Florida Blue
01.2018 - 06.2019
UI Developer
Cisco Systems
10.2016 - 12.2017
UI Developer
Medline Industries
02.2016 - 09.2016
Angular JS Developer
Wal-Mart
06.2015 - 01.2016
Jawaharlal Nehru Technological University
Bachelors Degree from Computer Science
Florida Institute of Technology
Masters Degree from Computer Information Systems