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Hi, I am
Jatin KumarFull stack Engineer
A builder at heart with 8+ years in frontend and full-stack development, specializing in React — component architecture, performance, and micro-frontends — with hands-on Node.js service design. I publish an npm component library and use Storybook-driven workflows, bridging product needs with robust engineering.
Powered by Next.js and Sanity, this portfolio gives you 100% CMS coverage with zero content deployments. Manage your portfolio, generate resumes in any supported language, and publish changes without touching the code. One portfolio, one source of truth..Test
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OCT 2025 — MAR 2026
Senior Software Engineer
JioHotstar via ProximityWorks
Contributed to the AdTech team for JioHotstar's web streaming platform and Smart TV apps across multiple devices, extending existing Module Federation micro-frontend modules. Delivered key features including Companion Screen ads, resolved Samsung TV remote/playback issues, and implemented CSS/JS compatibility fixes and polyfills for legacy Chromium-based Smart TV browsers.
StorybookNext.jsReactJSTailwindConnected TVMobXModule Federation
NOV 2023 — MAY 2025
Senior Software Engineer
Builder.ai
Built custom server-side rendering (SSR) solutions that improved page load performance by ~30% while enhancing scalability for high-traffic applications. Leveraged Deno to reduce runtime overhead by ~25% and improve cold-start performance. Optimized Sanity CMS workflows, cutting content publishing time by over 70%, and introduced data-driven feature rollouts with Statsig to improve experimentation and user engagement.
DenoSanity CMSTailwindStatsigSegment
MAY 2021 — SEP 2023
SDE-3
Kenko Health
Led a cross-functional frontend team to deliver a production-ready MVP 25% ahead of schedule while aligning engineering efforts with business goals. Earlier in the project, contributed to backend architecture by designing database schemas and developing the Auth and Plans services. Implemented SSR, ISR, and static generation in Next.js to achieve ~40% faster load times and significantly improve search visibility. Integrated Google Analytics, Sentry, and Razorpay to strengthen observability, payment reliability, and product insights.
Next.jsESlintNode.jsGoogle AnalyticsFramer MotionExpress.js
JAN 2019 — JAN 2021
Software Engineer
Crio.Do
Designed and maintained the frontend architecture for Crio.Do's learning platform, focusing on scalability. Built the Mentor Dashboard for real-time learner monitoring via WebSocket connections backed by RabbitMQ/MQTT, improving mentor efficiency by ~30%, and collaborated across teams to refine requirements and reduce post-release issues.
ReactJSMaterial UISpringBootJenkinsReduxAWSRabbitMQMQTT
JUL 2017 — JAN 2019
Associate Software Eng.
Kirusa
Engineered and evolved the frontend architecture for Kirusa's Analytics Dashboard, driving the migration from AngularJS to React for improved performance and maintainability. Scaled Yii2-based web portals to support twice the data ingestion capacity while enhancing reliability, and developed Alexa skills and chatbot integrations that increased user engagement and reduced support requests by 25%.
HTML 5ReactJSPHPSCSSAngularJSSpringBoot
Delhi Technological University
B.Tech
SOFTWARE ENGINEERING
Air Force School
High School
AgentDB9 - AI agent Workspace
Developed a containerized AI-powered coding environment featuring a browser-based VS Code IDE, multi-provider LLM integration, semantic code search, and a scalable microservices architecture.
AgentDB9 - AI agent Workspace of 9
Skills
Beyond frontend engineering, I have a genuine curiosity for backend development, AI, and IoT. This has led me to explore backend systems, APIs, databases, AI-powered workflows, and connected technologies, helping me build a broader engineering perspective.
Experience
My journey reflects continuous learning, adaptability, and a passion for staying current with evolving technologies. I enjoy bridging user-centered frontend experiences with robust backend systems while exploring animations, 3D experiences, and emerging technologies.
Projects
A selection of my recent personal projects, built to learn, experiment, and solve real-world engineering challenges. Each one reflects my curiosity and provides an opportunity to explore new ideas, technologies, and approaches.