Sidhanshu
Monga.
— Manifesto / 01Interfaces aren't built — they're experienced. I work where empathy meets the editor: designing the journey, then writing the code that makes it real.
Selected work
Two halves, one brain
The designer
UX · 09 yrsThe engineer
Frontend · 09 yrsNine years, six teams
UX Engineer at Google · Meet
- →Boosted cross-platform UI responsiveness by 20% and modernized core interaction patterns by engineering high-performance features in React and TypeScript.
- →Reduced design-to-production latency by 35% by architecting a shared internal developer toolkit and interactive high-fidelity prototyping pipeline used by 50+ engineers.
- →Collaborated directly with Product and Design leads to translate complex specifications into production-ready UI components for Google Meet, serving 100M+ daily active users.
Software Engineer at Google · Pay
- →Spearheaded the front-end codebase migration to Google Material 3, delivering uniform accessibility compliance (WCAG 2.1) and fluid animations across key payment surfaces.
- →Optimized core transaction and navigation flows, resulting in a 4.5% uplift in transaction completion rates for over 150M+ active users.
- →Integrated directly with Java-based microservices backends to unblock, build, and ship key financial features, demonstrating end-to-end fullstack adaptability.
Senior Software Engineer at Cars24
- →Optimized web performance and bundle efficiency by 20%, lifting mobile Lighthouse performance scores from 45 to 80+ via LCP, TBT, and TTI profiling.
- →Drove $150K+ in incremental revenue within the UAE market by designing, building, and launching the mobile-first flash-sale checkout feature.
- →Mentored a team of 3 junior frontend engineers on React best practices, server-side rendering (SSR) architectures, and web performance tuning.
Senior Software Engineer (Contract) at Brick&Bolt
- →Targeted 6-month contract engagement to architect and ship an in-house project management suite in React, accelerating operations visibility and boosting internal operational efficiency by 30%.
- →Led mobile chat development by integrating an open-source Zulip React Native library, managing deployment workflows for Android and iOS app stores.
Software Engineer at Essenvia
- →Designed and engineered the core frontend interface from 0 to 1 for a US-based healthcare regulatory startup, establishing a component-driven UI pattern library in Angular.
- →Spearheaded the codebase migration from Angular 6 to Angular 9, resulting in a 30% lift in page render speeds and optimized bundle assets.
Software Engineer at HISP India
- →Architected and delivered 8 custom web applications from scratch for diverse international clients, maintaining 100% on-time delivery metrics.
- →Built an interactive data visualization dashboard in Vue.js and Highcharts for client stakeholders in Oslo, Norway, transforming complex healthcare data into actionable charts.
The long story, short
I'm a UX engineer at Google who refuses to choose between the journey and the build. Most days I'm shipping product on Meet; most nights I'm building the next thing of my own.
Been at this for 9 years — ~3 yrs at Google Meet (Durham, NC), ~1.5 yrs before that at Google Pay (Bengaluru), and a stint at Cars24 where I lifted UI performance by 60%. The thread through all of it: most of my time goes into building products.
Off-screen I write poetry, perform theatre, and once played national-level cricket. The poet teaches me to listen; the theatre kid teaches me about timing. Both make me a better designer.
Durham, North Carolina
Building products on the side
Off-screen
between
two screens
i live in two timezones —
one where the code compiles,
one where my mother's voice
still calls me beta at 2am.
both are home.
neither sleeps.