# Vatsalya Prakash > Front-end developer at Sirona | ex-PayPal, ex-McKinsey Location: Mountain View, California, United States Profile: https://flows.cv/vatsalya Experienced Software Developer with 6+ years of professional experience at leading firms (PayPal, McKinsey) specializing in React, Node.js, and GraphQL. Established proficiency in delivering impactful projects following AA accessibility standards, performance optimization, and enhancing user engagement. Seeking to leverage domain expertise and a passion for UI/UX design in an impactful role. The I's: I have a Master of Science in Computer and Information Science from the University of Pennsylvania. Currently, as a Software Engineer 2 at PayPal, I contribute to the Peer-to-Peer (P2P) platform (Web), which handles transactions worth millions of dollars daily. My job includes improving the Send, Request, and PayPal.me features, as well as adding new functionalities and enhancements that simplify the experience for both our customers and business users every day. At PayPal, I've gained experience in developing new, user-friendly payment solutions that improve efficiency and security, making it easier for small businesses and individuals to use payment options on social media. I'm passionate about building scalable, user-focused products that use technology to solve real problems. ## Work Experience ### Software Engineer @ Sirona Medical Jan 2024 – Present | San Francisco Bay Area • Drove a major Worklist query and data pipeline upgrade, implementing a new filter clause builder and endpoint integration, and resolving gaps and ensuring columns are rendered correctly across the table. • Built the foundation for a next-gen Worklist table using React/TypeScript with TanStack Virtual for virtualization, along with reusable table primitives, and skeleton loading states with user-selectable layouts. • Delivered batch reassignment from the Worklist queue by building an “Assign Exams” feature, integrating a typed REST mutation with permission checks, enabling faster load-balancing, and reducing manual routing steps. • Refactored Worklist state architecture by extracting responsibilities into dedicated contexts, removing dead/legacy search surfaces, and tightening boundaries to prevent unintended adoption in unrelated areas ### Software Engineer @ PayPal Jan 2019 – Jan 2024 | San Francisco Bay Area * Core contributor to the P2P Web team at PayPal, driving enhancements in payment efficiency and security across Send, Request, and PayPal.me flows. * Engineered the PayPal Seller Profiles platform with React, Redux, and GraphQL, achieving AA accessibility standards. Launched in 20 countries with >500k profiles created, the initiative generated $1.6M in revenue and facilitated over $37M in TPV (as of 2023), significantly boosting PayPal's market presence by enabling small businesses and individual users to integrate payment options on social media seamlessly. * Developed the PayPal Shops platform, extending the functionality of Seller Profiles with e-commerce capabilities for product listings and sales * Worked on the technical overhaul of PayPal’s Send and Request peer search functionality by implementing custom React components, moving away from third-party libraries. This effort (ongoing) streamlines maintenance, enhances user experience, and has contributed to incremental revenue of $8.6M and a nearly 1% improvement in E2E conversion rates (as of 2023). * Enhanced the reliability of our admin tool, increasing availability from below 99.8% to 99.99%, by identifying and fixing critical bugs and implementing comprehensive logging solutions. Additionally, independently updated ~60 outdated dependencies, significantly reducing system vulnerabilities and setting the stage for the integration of Renovate for automated dependency management. * Spearheaded a project to improve end-to-end test coverage using Cypress, achieving a >95% pass rate, and enhanced app reliability by introducing over 100 unit tests with Jest and React Testing Library. This initiative reduced bug rates by 20% and accelerated feature deployment cycles. * Played a pivotal role in migrating from REST APIs to GraphQL, optimizing data exchange, and improving service responsiveness. This strategic shift contributed to a remarkable improvement in the app performance and reduced server load. ### Part time Web Developer @ The Wharton School Jan 2018 – Jan 2019 | Greater Philadelphia Area The HOFINET portal consolidates regularly updated international housing finance knowledge in one central, easily accessible place. • Reconstructed the HOFINET website using React.js to optimize performance and enhance the user experience. • Created reusable dynamic components reducing the codebase by half and developed file upload features. ### Software Engineer Intern @ PayPal Jan 2018 – Jan 2018 | San Francisco Bay Area PayPal Digital Gifts is PayPal’s digital marketplace that allows customers to buy gift cards for themselves or send it to their loved ones. • Worked on the frontend part of the application using ReactJs to create the digital storefront consistent with PayPal’s brand of user experience. • Added responsiveness and web accessibility feature making the website more robust. • The website went live in 6 countries during the internship and is currently part of PayPal. (ReactJs) https://www.paypal.com/us/gifts ### Junior Digital Analyst @ McKinsey & Company Jan 2016 – Jan 2017 | Bengaluru Area, India Experience: • Launched a Customer Incentive Portal for one of the largest global food distributors that helped distribution partners track monthly targets, view incentives and manage goals (ReactJs / Redux) • Developed a business simulation iPad app for CxO level executives in auto industry firms that helped in improving their understanding of future auto trends built on the data collected by McKinsey (NodeJs, MySQL) • Created visualization dashboards for clients across several sectors in rapid prototyping manner utilizing the latest technologies and development tools (Highcharts/Redux/Webpack/PWA) • Mentored an intern for 6 months overseeing his growth from both technical and personal standpoint Responsibilities: • Collaborate with a team of consultants and engineers across global offices in McKinsey working with clients across banking and telecom sectors • Gather business requirements and identify the right solution in the form of a web or mobile application followed by quick development and delivery. ### Junior Digital Analyst - Intern @ McKinsey & Company Jan 2016 – Jan 2016 | Bengaluru Area, India Experience: • Created a Digital Change Manager for a leading multinational telecom service operator that enabled administrators to compare benchmarks and analyze transformation success rates (Highcharts, JavaScript) • Developed a real-time retrospective application using AngularJS for the frontend and Firebase for the backend and authentication • Worked on the development of JSChannel 2016 webpage. JSChannel is one of the biggest JavaScript conference held in India annually. ### Web Developer - Internship @ Snapdeal Jan 2015 – Jan 2015 | Bengaluru Area, India Developed UI using AngularJS, BootstrapCSS, jQuery to fetch data and construct real time charts using Highcharts and D3.js. ## Education ### Master of Science - MS in Computer and Information Sciences, General University of Pennsylvania ### Bachelor of Technology (B.Tech.) in Computer Science Vellore Institute of Technology ### High School in Computer Science City Montessori School, Gomti Nagar, Lucknow. ## Contact & Social - LinkedIn: https://linkedin.com/in/vatsalyaprakash --- Source: https://flows.cv/vatsalya JSON Resume: https://flows.cv/vatsalya/resume.json Last updated: 2026-04-10