Build the thing.Make it feel inevitable.
I'm Karan Bhatnagar. I turn fuzzy startup ideas into sharp web and mobile products, with founder judgment, clean UX, and production-ready full-stack engineering.
Build Mode
Taste-led builds for people who are done with generic.
Experience
3+
Years shipping production apps
Stack
Ship
Frontend, backend, mobile
products
05
mode
ship
fit
MVPs + AI
Product brain, coder hands,ship-it nervous system.
README.preview
merge ready
current branch
product-builder
exp
3+
mode
ship
I turn “what if?” into shipped screens, APIs, and product loops.
I'm a Full Stack Developer with 3+ years of experience building production-grade web and mobile applications. I work across frontend, backend, mobile, database, cloud, and CI/CD workflows.
I bring the founder lens from Junto and Stumble Market into client work: clarify the MVP, choose the right stack, design the core user flow, and ship without turning the site into a wall of data.
My recent work spans Movaraa, ZestyCrops, MegaRail, Junto, and Stumble Market, covering full-stack apps, commerce, internal tools, social products, product strategy, and AI-assisted delivery.
view()
Frontend
Interfaces, dashboards, landing flows, and polish.
api()
Backend
Auth, APIs, admin systems, and production logic.
app()
Mobile
Product flows, file handling, and backend-connected screens.
deploy()
Launch
Cloud, CI/CD, performance, and AI-assisted iteration.
The tools are serious.The interface does not have to be boring.
A practical stack for shipping clean web apps, mobile experiences, backend systems, and AI-assisted product iterations.
01
HTML5/CSS3
Used in real product builds, not parked in a keyword list.
02
JavaScript
Used in real product builds, not parked in a keyword list.
03
TypeScript
Used in real product builds, not parked in a keyword list.
04
React
Used in real product builds, not parked in a keyword list.
05
Next.js
Used in real product builds, not parked in a keyword list.
06
React Native
Used in real product builds, not parked in a keyword list.
07
Tailwind CSS
Used in real product builds, not parked in a keyword list.
08
shadcn/ui
Used in real product builds, not parked in a keyword list.
09
Redux
Used in real product builds, not parked in a keyword list.
01
Modern JS Tooling
Used in real product builds, not parked in a keyword list.
Less case-study overload.More proof of taste.
Founder ventures and shipped products across marketplaces, movement platforms, internal tools, social apps, and full-stack commerce.
Stumble Market
A curated resale marketplace for fashion, home goods, collectibles, and independent sellers. I help shape the product direction and buyer experience so sustainable shopping feels premium, modern, and trustworthy.
Role
Co-Founder
Focus
Marketplace UX
Signal
Verified resale
Curated resale experience with verified sellers, trusted checkout, and a premium visual layer for second-hand commerce.
Stumble Market
Live preview from URL
Open siteWhat it is
Verified second-hand commerce with fashion, home goods, collectibles, trusted sellers, and polished storefront discovery.
Why it stands out
The interface makes resale feel premium and safe with stronger hierarchy, credibility signals, and cleaner buyer intent paths.
Movaraa
Movement platform
Move with graceExplore Services
5+ Programs
Live + Hybrid
IST Friendly
Movaraa
Full-Stack DeveloperA movement and wellness web product with a clean service flow, live class positioning, and warm editorial visuals. Built as a polished full-stack experience rather than a plain brochure site.
ZestyCrops – Spices E-Commerce
Full-Stack DeveloperA premium spices e-commerce platform with product browsing, cart, checkout, order management, and an admin dashboard. Built with Next.js, NestJS, PostgreSQL, and AWS deployment workflows.
MegaRail – Western Railways ID Card Generator
Product EngineerAn employee ID card generator for Western Railways with bulk card creation, QR codes, branded templates, and print-ready output. Built as a fast internal tool and deployed on Vercel.
Junto
Founder & BuilderA trust-based social coordination app for discovering, joining, hosting, and repeating high-intent local plans. Junto is designed around reliability, gated access, contextual coordination, and real-world participation.
Proof I can sit inside a teamand still ship with taste.
Work history, education, and the practical context behind the product decisions.
AlturaLabz
WFH
AlturaLabz
Full-Stack & Mobile Developer
Building admin systems, APIs, React Native apps, and AI-powered product surfaces across production workflows.
- 01Admin panels, RBAC backend systems, NestJS monorepo architecture, REST APIs, and data-heavy dashboard optimization.
- 02React Native delivery across backend-integrated apps, PDF editing workflows, and AI-powered learning/problem-solving products.
- 03AI-driven web platform work, including dynamic UI generation from user prompts and performance improvements with caching and Zustand.
Get In Touch
Need product clarity, technical direction, or a strong builder for your next launch? Reach out for tech counselling, founder advisory, or hands-on execution.
Contact Information
Feel free to reach out through any of the following channels. I'm always interested in hearing about new projects and opportunities.