react-toasties
A lightweight, customizable toast notification library for React. Zero dependencies, fully accessible, and developer-friendly.
ReactNPM PackageOpen SourceAccessibility
Full Stack DeveloperVivek
Vivek
Malhan
Developer · Blogger · YouTuber
Crafting high-performance web and mobile experiences at Publicis Sapient. Passionate about Generative AI, AI Agents, React ecosystems, and sharing knowledge through writing and video.
● Available for Projects
About Me
The Person Behind the Code
I'm a Full Cycle Developer at Publicis Sapient with 5+ years of hands-on experience crafting high-performance web and mobile applications. Passionate about Generative AI, AI Agents, AI Workflows, React ecosystems, and pushing the boundaries of what's possible on the web. When I'm not coding, I'm creating content — writing on Medium, making videos on YouTube, and sharing what I learn.
Outside of code, I'm a storyteller. Whether it's through a radio mic, a Medium article, or a YouTube video — I believe in sharing what I learn with the world. Technology is most powerful when it's understood by everyone.
✉ amalhan43@gmail.comPart-time Radio Jockey (RJ) — yes, the voice too.
Writes technical deep-dives on Medium.
Creates coding & dev vlogs on YouTube.
Known as 'The Night Crawler' — delivers overnight.
Inner-source contributor at Publicis Sapient.
5+Years Experience
20+Projects Shipped
2NPM Packages
∞Cups of Coffee
What People Say
"Vivek is an exceptional engineer. His technical prowess, dedication, and contributions to inner-source initiatives have been invaluable to the team."
Vasu NagpalManager, Publicis Sapient
"I nicknamed him The Night Crawler — if you gave Vivek a task before leaving for the day, it would be done and polished by morning."
Vishnumoorthi BhatEx. Manager, Publicis Sapient
"Vivek is our go-to person for app and web analytics. Articulate, hard-working, and an excellent team player."
Team FeedbackPublicis Sapient
What I Bring
My Craft & Expertise
I don't just use tools — I master them. Here's the stack I've built real products with, and the communities I contribute to.
Core Stack
The primary tools I build everything with
ReactNext.jsTypeScriptJavaScript (ES6+)HTML5 & CSS3Tailwind CSSPythonLangchainLLMsAI AgentsAI
Mobile & Cross-Platform
Taking experiences beyond the browser
React NativeExpoPWAs
Backend & Data
Full-stack capabilities that round out the experience
Node.jsNest.jsExpress.jsGraphQLMongoDBFirebaseAWSREST APIs
Craft & Tooling
How I ship with quality and confidence
RAGVector DatabasesGit & GitHubWebpackMicro FrontendsAnalytics IntegrationStripe API
Content & Community
Sharing knowledge beyond the codebase
Technical WritingYouTube Content CreationOpen Source (NPM)MentoringCode Reviews
“The best code is written with empathy — for the user, the team, and the next developer who reads it.”
What I've Built
Projects
From published NPM packages to full-stack clones — things I've shipped and learned from.
react-comboboxes
Accessible, composable combobox components for React — built with WAI-ARIA patterns and zero runtime dependencies.
ReactNPM PackageWAI-ARIAAccessibilityOpen Source
rag-beginner-guide
This repository is a hands-on, beginner-friendly guide to building a Retrieval-Augmented Generation (RAG) system from scratch using Python. No theory overload. No black-box magic. Just real code, real debugging, and real GenAI engineering.
pyhtonraglangchainFAISS
webpush-notifications
This repository contains a proof of concept (POC) for implementing browser popup notifications using Web Push
ReactFirebaseReal-time
custom-react-hooks
This repository contains some of the most useful custom react hooks that will enhance your overall react development period by reducing your time consumption. These hooks will definitly help make your project easier.
Reactcustom hooks
Uber Clone
A ride-hailing app clone with real-time maps, driver tracking, fare calculation, and booking flows.
React NativeGoogle MapsFirebaseExpo
Career Path
Experience
Building products at scale across agencies, startups, and everything in between.
Senior Experience Engineer
Publicis Sapient·Full-time
Oct 2021 — PresentIndia (Remote)
- Engineered scalable, responsive, and accessible web solutions using React.js, Next.js, and TypeScript, ensuring optimal performance and user engagement across devices.
- Spearheaded the development and maintenance of various robust retail e-commerce ecosystems integrating multiple payment gateways, analytics frameworks, and RESTful APIs.
- Pioneered the integration of Generative AI and AI Agents into client applications, creating intelligent, context-aware user experiences that enhanced engagement and efficiency.
- Contributed to the InnerSource R&D initiative—developing reusable frameworks, npm packages, and AI-powered engineering accelerators to improve team productivity.
- Drove analytics integration across products, becoming the go-to person for app and web analytics.
ReactNext.jsReact NativeGenerative AITypeScriptAnalytics
React Specialist & Development Intern
Ryazio Technologies LLP·Internship
Feb 2021 — Jul 2021Remote
- Built and shipped user-facing features using React, Express, and Firebase with a focus on performance.
- Integrated AWS services and Stripe payment gateway into production applications.
- Collaborated closely with senior engineers to deliver features on tight timelines.
ReactExpress.jsAWSFirebaseStripe
React Specialist & Development Intern
Edulyx — E-Learning·Internship
Oct 2020 — Jan 2021Remote
- Developed e-learning platform features using MongoDB, Node.js, and React.
- Implemented robust authentication systems and user management flows.
- Improved student dashboard UX, resulting in higher engagement metrics.
ReactNode.jsMongoDBAuthentication
Frontend Intern
Great Developers·Internship
Aug 2020 — Sep 2020Remote
- Built responsive landing pages and marketing sites using HTML, CSS, and JavaScript.
- Gained foundational experience in frontend development workflows and best practices.
HTMLCSSJavaScript
Say Hello
Let's Build Something Together
Whether it's a project, a collaboration, or just a good conversation — I'd love to hear from you.