Sarthak Kamble | Full-stack developer

I build backends
that don't fall over.

Open to workMumbai, IST

Now building

I build software that's boring in the best way: it loads, it handles failure, and it never loses your data.

Work⁽⁰³⁾

Concept previews until each one ships. Click a project to open it.

An AI mock interviewer that reads your own GitHub repo, asks line-level why and what-if questions, and tracks your weak spots across sessions.
Next.js / Node.js / PostgreSQL / GitHub OAuth / LLM API
src/queue/retry.tsConcept preview
1 export async function withRetry(fn, attempts = 3) { 2 for (let i = 0; i < attempts; i++) { 3 try { return await fn(); } 4 catch (e) { await sleep(2 ** i * 100); }5 } 6 }
Line 4 catches every error. What happens to a 401 here, and what does the function return after the last attempt?
It retries the 401 three times, then returns undefined.
Half right: a 401 shouldn't be retried. Saved to weak spots.
Scan a restaurant bill and friends claim what they ate live, by count, by shared plate or with an equal split. Everyone pays their exact share by UPI or cash, and it installs on your phone like an app.
Next.js / TypeScript / Supabase / Cloudflare Workers AI
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367 soft, rounded icons, each in stroke and solid under the same name. Published on npm for React, React Native, Vue, Svelte and Angular and on pub.dev for Flutter, plus plain SVG and an icon font, with a site to search and copy any icon.
TypeScript / Next.js / Python / Dart / SVG / npm
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May 2026 - Present

Full Stack Developer Intern

Build features end to end on two production evaluation platforms, from Node.js/Express REST endpoints to React screens with Redux Toolkit and TanStack Query, behind AWS Cognito auth and role-based access.
Migrated backend modules to class-based models on a layered Route, Controller, Service and Repository architecture, with explicit mapping between database and API shapes.
Review teammates' pull requests for correctness and data-integrity bugs.

Mar 2025 - May 2025

Support Trainee

Built React and TypeScript dashboards for banking and financial-services clients, and fixed bugs in Flask and Supabase backend services.
Defined REST API contracts with backend engineers before integration.
Led a UI revamp that added dark mode and improved accessibility.

Jun 2024 - Jul 2024

Summer Intern

Built a consumable management system to track and manage the department's inventory.
Designed the MySQL database, the PHP backend and the HTML/CSS interface staff use to look up and manage stock.