Subhrajit Dasgupta
Open to work5 years experienceSenior Software Engineer
Senior Software Engineer | Frontend Specialist | Fullstack (React / Next.js / TypeScript)
Standing Rank
Rank Not Available
Developer Badges
Skills & Technologies
56 skillsWork Experience
Senior Software Engineer
Khyaal
- Architected and led the build of the Khyaal platform (Next.js 15, React 19) serving 5M+ senior citizens; owned a scroll-linked animation system that lifted engagement 35% at 60fps on low-end Android, raised Lighthouse to 92, and cut page load 40% via SSR and image/font optimization.
- Built Khyaal Assistant, a chat-first AI product for 50K+ users, as sole frontend engineer; engineered a real-time WebSocket streaming engine that cut perceived first-token latency under 300ms and a resilient session layer that reduced session-drop ~40%, and shipped conversational commerce to Shopify checkout (+25% in-chat conversion).
- Delivered Khyaal Health Sure, an AI-guided health-insurance funnel (Next.js 16, strict TypeScript, Tailwind v4, shadcn/ui) optimized for SEO via React Server Components and SSR, with a WebSocket plan-finder, Razorpay payments, JWT native-app auth, and a secure server-side API proxy to backend microservices.
- Architected Khyaal Pulse Console, a persona-aware Customer Data Platform (React 18, TypeScript 5, Vite 6), consolidating 10 operational surfaces into one role-based SPA with RBAC, RTK Query over a cookie-authed REST API, AES-encrypted storage, and a visual journey-canvas editor.
- Set frontend engineering standards and mentor engineers on architecture and code quality; integrated Razorpay and PayU payments (+18% conversion), OTP authentication, and a native app bridge, and wired Mixpanel, Google Analytics, and Meta CAPI to surface drop- offs that drove UX redesigns.
Senior Frontend Developer
Thumbtack Technologies
- Led frontend development of large-scale web apps, e-commerce, and customer-engagement platforms in React.js, Next.js, Redux, and TypeScript, and mentored junior developers on React and TypeScript patterns.
- Led the frontend of the Bajaj Beyond CSR website (Next.js, TypeScript) with reusable animated components (Framer Motion, GSAP) and SSR/SSG for performance and SEO; optimized Strapi CMS retrieval with custom populate URLs to cut network requests.
- Built Aircon, a role-based AC-installation and project-management system (React.js, Redux, RTK Query, Material UI) with QR-code onboarding, distinct customer/agent/admin modules, and real-time updates over REST and Socket APIs.
- Delivered NOVA by IIFL, an API marketplace and documentation platform (Next.js, Material UI) with a dynamic Redux cart and secure auth APIs, and IIFL Securities' main website using SSR/SSG and Strapi headless CMS for editor-managed content.
Projects
Khyaal
View Project- Flagship consumer platform for 5M+ senior citizens spanning memberships, travel, events, rewards, and an AI assistant, live in the browser and inside the native mobile app via WebView.
Khyaal AI Assistant
View Project- Chat-first, multi-domain AI assistant (shopping, travel, safety, and general help) shipped from one React codebase across iOS, Android, and web, with in-chat conversational commerce to Shopify checkout.
50 Above 50
View Project- Full-stack talent-contest platform for adults 50+ with a scroll-linked animated site and end-to-end participant lifecycle: OTP auth, submissions, live auditions, voting, and ticketing.
- Razorpay payments, S3 media uploads, multi-channel notifications, and Zoho CRM sync.
Khyaal Health Sure - AI Chatbot
View Project- Production-grade real-time group messenger with live presence and typing indicators over Socket.IO using MessagePack binary serialization, Redux-Saga state orchestration, a native WebView bridge, and an AWS Amplify CI/CD pipeline.
Leaderboard Standings
Leaderboard Position Pending
Global test scores, peer standing percentiles, and algorithm leaderboard ranks are updated dynamically.
Assessment Highlights
Assessments Not Completed
Coding evaluations, system assessment results, and conceptual score badges will appear here after taking a test.
AI Collaboration Score
AI Collaboration Score Pending
Developer coding behavior, assistant cooperation, and AI pair-programming indicators are evaluated during live coding sessions.
Role Compatibility Profile
Role Compatibility Analysis Pending
Custom matching reports, candidate role compatibility percentiles, and core engineer strength profiles are processed once conceptual code screenings are complete.
Achievements
Platform Performance Optimization
Architected AI chat products and a Next.js platform serving 5M+ senior citizens, raising Lighthouse to 92 and cutting page load 40%.
About Details
Professional Bio
Senior Software Engineer and frontend specialist with 4+ years building and leading development of scalable, high-performance, pixel-perfect web applications in React.js, Next.js, and TypeScript. Experienced across the full stack with Node.js, NestJS, and MongoDB.
MCA in Computer Application
Techno India University, Kolkata (2020 - 2022)
B.Sc in Computer Science
Assam University, Silchar (2016 - 2019)