Sujeet Kumar Jaiswal

Frontend Architecture & Infrastructure

• • Modern Web Development: Next.js SSR, React, TypeScript, Gatsby SSG, Micro-frontend Architecture
• • Performance Optimization: Core Web Vitals, Critical Rendering Path, Bundle Optimization
• • Server-Side Rendering: SSR Performance Tuning, Hydration Optimization, Edge Computing
• • Build Tools & CI/CD: Webpack, Vite, Docker, AWS CloudFront, Cloudflare Workers

Infrastructure & Observability

• • Observability Stack: Datadog, Sentry, New Relic, Grafana, Prometheus
• • Performance Monitoring: Real-time metrics, Error tracking, APM, Infrastructure monitoring
• • Cloud Architecture: AWS (Lambda, CloudFront, S3, Elemental MediaConvert), CDN optimization
• • Load Testing: k6, Artillery, Performance benchmarking

AI & Developer Experience

• • AI-Powered Development: GitHub Copilot, ChatGPT integration, AI-assisted code review
• • Developer Tools: ESLint, Prettier, Husky, Automated testing pipelines
• • DX Improvements: Hot reloading, Type safety, Component libraries, Design systems

Quince (E-commerce, B2C - 12M MAU)

Quince is an affordable luxury brand selling high-quality fashion and home goods direct from factories.

Infrastructure & Performance Leadership

• • Led migration of quince.com to Next.js SSR, enabling personalized content delivery and A/B testing
• • Architected Node.js + Redis backend-for-frontend achieving p99 latency of 38.5ms at 300 RPS
• • Deployed Datadog and Sentry monitoring, reducing issue triage time to <10 minutes
• • Improved Core Web Vitals by 20%, accessibility by 30%, and SEO by 20% using Critical Rendering Path techniques

AI & Developer Experience Initiatives

• • Integrated GitHub Copilot and ChatGPT workflows, improving development efficiency by 25%
• • Implemented server-side Google Tag Manager (SGTM) to mitigate ad-blocker impact
• • Migrated to Statsig for advanced experimentation strategies

Technical Infrastructure Projects

• • Built Site Content Service with versioning, rollback, and controlled releases
• • Architected AWS-based Image Service achieving 30% cost reduction with failover reliability
• • Implemented HLS/DASH streaming using AWS Elemental MediaConvert
• • Achieved 25% CTR to product pages and 10% CVR for add-to-cart
• • Implemented advanced caching patterns with LRU Cache optimizations

Vistaprint (E-commerce, B2C - $2B revenue, ~16M MAU)

Global e-commerce platform operating in 20 countries.

Technical Leadership & Team Management

• • Led and managed 6 developers, handling promotions and performance improvement plans
• • Hired and built the India team within Vistaprint's Merch Tech Domain
• • Contributed to migrating upper funnel discovery pages to microservice/micro-frontend architecture across 20 global markets

Infrastructure & Performance

• • Built SWAN design system ensuring consistent brand identity, 90+ Lighthouse score, and 20% faster sprint completion
• • Implemented headers/footers as ESI in Cloudflare, removing UI inconsistencies and saving 50+ hours per deployment
• • Utilized AI code completion tools for faster development cycles
• • Optimized HTTP/2 and HTTP/3 implementations

Product Development

• • Built logo-maker web app from prototype to full launch with user testing and market deployment
• • Developed MLPs using Gatsby and Builder.io for campaign-specific pages using SSG patterns

CureFit (Health & Business, B2C)

Full-Stack Development

• • Built end-to-end Audit platform with REST APIs, React Native mobile app, and admin dashboard
• • Developed time-stamped feedback system with annotation timeline using Video Playback Stack principles
• • Reduced page load time by 20%, TTI by 15%, handling 12.5K input elements using lazy loading and virtualization
• • Implemented scalable task queues for video processing workflows

Infosys (Multi-tenant Enterprise EdTech, B2C)

Platform Development

• • Built ML-based recommendation system using Association Rule Learning
• • Developed video ingestion pipeline with HLS/DASH transcoding using FFmpeg
• • Authored plugin-based page framework reducing tenant onboarding from 3 to 1 week and improving page load by 66%
• • Deep understanding of V8 JavaScript Engine and Node.js Event Loop
• • Implemented resilient retry strategies and publish-subscribe patterns