Headline

SDE-2 @ Spinny | xAirtel | Mnit Jaipur | AI | Javascript, React, Redux, Webpack, SEO, Typescript | Frontend developer I Product engineer | UI | User experience | xNiyo

About

I am Frontend Developer (SDE-II) with 2+ years of experience building high-performance web and mobile products used by millions. I specialize in React.js, Redux, Webpack, SSR, React Native, Core Web Vitals, and SEO-driven UI — turning complex problems into fast, conversion-focused experiences. At Spinny, I've independently built production-grade web platforms from scratch — owning the full frontend end-to-end across consumer, care, and internal platforms. On the performance front, I improved Core Web Vitals (CLS, LCP, FPS) by 20–30% and significantly reduced per-page bundle size through consistent application of frontend best practices — improving initial load performance and asset delivery across the platform. On the SEO side, I shipped an SEO-optimized tool that ranks on Page 1 of Google, driving measurable organic traffic growth. I integrated and fine-tuned the shared Design System, improving UI consistency and adoption across the entire Spinny ecosystem. I also migrated to TanStack Query — eliminating boilerplate and reducing manual API handling overhead. B.Tech, Electrical Engineering — MNIT Jaipur Passionate about building fast, accessible, and conversion-driven frontend experiences. Open to Senior Frontend / React Developer roles. Let's connect.

Location

Gurugram

AI stack

antigravity

claude code

claude

codex

cursor

Work experience

Software Engineer at Spinny, Jan 2025 - Present · 1 y 8 mo, Gurugram, Built a scheduled AI triage agent (Claude Code + Bitbucket Pipelines) that reads daily Sentry errors, and files enriched Jira bugs with root-cause analysis — cutting 25 daily error candidates to 2 actionable tickets, plus a one-command stage that drafts the fix and raises a PR. • Integrated and enhanced the shared ”SPEED” Design System for the Spinny Consumer platform, contributing reusable components and standardizing UI patterns, reducing development effort and improving product consistency. • Developed the Sell Homepage for the Spinny Consumer website from scratch, redesigning the user journey with a simpler and more intuitive UI, resulting in a 10% increase in lead conversion rates. • Optimized React application performance by eliminating unnecessary re-renders and implementing memoization, code splitting, dynamic imports, lazy loading, and virtualization, improving rendering performance and Core Web Vitals by 15–20% while reducing bundle size and improving overall user experience. SDE-I Jan 2025 – March 2026 • Developed the Spinny Pro website for desktop, enabling seamless service booking and management and contributing to an 8–9% increase in overall user visits. • Constructed the Payment checkout for the Spinny Care website, reducing cash transactions and 100% digital record-keeping and refund processes. • Built an intuitive, SEO-optimized Car Service Cost Calculator that allows users to estimate service charges based on vehicle type and ranks on the 1st page of Google search. • Developed the Catalogue Page from scratch to display spare parts availability for refurbishment cars, using tanStack Query. Impact: Page Load faster, API takes less time, More convenient UI.

Software Engineer at Airtel Digital, Oct 2023 - Jan 2025 · 1 yr 4 mos, Gurugram, As a Software Development Engineer in the Thanks App checkout team, I contribute to the full checkout, pre-checkout, and quick checkout flows, continuously maintaining and developing new features to improve user experience. Below are the contributions:- • Built backend-driven widgets for APB wallet and saved-card payment modes, integrating encryption for card transactions, improving security and user experience. • Enhanced UPI onboarding, improving success rates (SR) by 2%, and created health callouts for down banks, leading to a 1.5% SR boost. • Developed a new quick checkout for React Native and iOS, increasing SR by 2%. • Resolved a large numbers of SWAT bugs, optimizing UI, eliminating inconsistencies, and enhancing checkout reliability. • Led SANITY testing for major releases, ensuring high-quality deployments. • Analyzed Clickstream data, identifying gaps in onboarding and transaction analytics, refining SR calculation on Growth Book. • Architected a scalable, high-performance new checkout flow for millions monthly users.. • Migrated the full checkout page from native iOS to React Native, reducing code size with backend-driven widgets following SOLID principles.. • Implemented a new order creation and polling flow for broadband LOB recharges, reducing order service API calls by 3-4x and decreasing database load, resulting in cost savings. • Integrated SIM binding check for APB wallet transaction. This led to reduction of APB wallet fraud cases and increased account security.

Software Developer Internship at Niyo Solutions Inc., Jun 2022 - Dec 2022 · 7 mos, Bangalore Urban, • Worked on enhancing their internal search functionality, including solutions to bugs and adding a feature. • I have added some features that include displaying the live photo of a customer with its corresponding liveness score and face match score. Also integrated API in the back-end. This data is coming from the AWS S3 bucket. • I have added a feature that can enable and disable the Biometric KYC option of a customer in the workbench. I have optimized this process by calling only one API rather than three different backend APIs. Therefore, it saved 600ms time as one API almost takes 300ms. And reduced latency, Making this process 300% faster. • Added two details, KYC mode and KYC status of the Customer, on the profile page. It saved the time of the customer support executive and enhanced the customer experience. • I have added a feature using which an authorized person can disable-enable full KYC of customers in bulk. It not only saved time but also enhanced security in online banking. • I worked on Pan Verification API migration and Wealth API migration. Pan verification is one of the crucial steps in opening bank accounts. And Wealth API creates wealth accounts for customers while onboarding. This work added value to the onboarding process.

Education

Bachelor of Technology - BTech, Electrical Engineering, Malaviya National Institute of Technology Jaipur

Higher secondary education, Science, Krishnanand memorial academy

Public links

manas-raj-portfolio-mu.vercel.app: https://manas-raj-portfolio-mu.vercel.app/

github: https://github.com/Manasdangi