Hi, I'm Kuntal Rathod, a full-stack developer.
0+ yrs experienceI ship it,test it,own it.
Based in Rajkot, open to relocating anywhere in India. At ThinkerSky I build financial and operational software with React, Node.js and MySQL: multi-currency workflows, reporting and approvals. On the side I ship PayNudge (AI drafts the awkward invoice follow-up, you approve every send; 380+ automated tests) and PaperKit (34 PDF tools that never upload your files).
Engineering notes / 01
“I don't just build web apps —
I build software that interacts with the real world.”
- web apps
- ai
- backend systems
- architecture
- humans
My work spans full-stack web development, backend engineering, system design, and AI — products that hold up in production, from the interface down to the architecture behind it, including financial systems and business software. I care about clean architecture, performance, and building systems that scale beyond the first release.
Where I've been building
logos, dates and notes exactly as they happened.
ThinkerSky Technologies Pvt. Ltd.
Full-Stack Developer
technical notes (8)
- Translated Figma designs into responsive React.js interfaces using Ant Design and SCSS/SASS, focusing on UI/UX consistency, usability, and seamless experiences across different screen sizes.
- Developed reusable React components and interactive interfaces for enterprise financial and operational workflows, integrating REST APIs to deliver dynamic, data-driven functionality.
- Improved application performance and user experience through server-side pagination, asynchronous data loading, and status-based filtering, ensuring efficient data handling and smoother interactions.
- Built multi-currency financial workflows handling forward contracts, MTM calculations, daily accruals, and settlement processes, with transactional integrity and audit logging.
- Developed accounting and financial reporting features including journal entries, transaction reports, multi-level financial records, Balance Sheet, and Profit & Loss statements.
- Built workflow-driven systems for quality analysis and operational tracking, including parameter-based data capture, approval flows, automated calculations, and real-time status visibility.
- Developed financial record management features with automated PDF generation, commission tracking, reconciliation workflows, and Excel/PDF reporting, while building REST APIs using Node.js, Express, and raw SQL queries with MySQL.
- Integrated AWS S3 for secure file uploads using pre-signed URLs and developed CSV bulk import workflows with multi-level validation and sequential processing to prevent duplicate or inconsistent records.
B.Tech, Computer Science & Engineering
Darshan University, Rajkot, Gujarat
2021 – 2025
Things I've built
some survived production. some taught me something.
PayNudge
AI Invoice Follow-Up Automation
AI-powered invoice follow-up automation for freelancers and small businesses. Create invoices, track payments, and let AI draft follow-up emails for overdue invoices — with a human approving every message before it sends.
Paperkit
Client-Side PDF Toolkit
34 PDF tools that run entirely in your browser. No uploads, no watermarks, no sign-up — merge, compress, OCR, redact, encrypt, and even chat with a PDF, all processed client-side with WebAssembly.
FreshKart
Online Grocery Store
A full-stack grocery delivery platform built with the MERN stack. AI-generated product listings, Stripe checkout, a dual guest/authenticated cart that merges on login, and a full admin dashboard with analytics.
3 on file — each one shipped, broke, and got fixed at least once.
// archive is append-only. nothing here has been quietly deleted.
open the full archive ↗Tools I keep around
inventory sheet. no proficiency bars — they were never honest anyway.
Languages
- JavaScript
- TypeScript
- Python
Frontend
- HTML
- CSS
- React.js
- Next.js
- Tailwind CSS
- shadcn/ui
Backend
- Node.js
- Express.js
- Prisma
- Drizzle
- Sequelize
Data
- PostgreSQL
- MongoDB
- MySQL
- Redis
- Supabase
Tools
- Git
- Postman
- Docker
- AWS
- Vercel
// the list is the boring part. what matters is which ones I reach for first, and why.
github / KuntalRathod
proof that the keyboard wasn't decorative.
Got an interesting
problem?
Always open to discussing product architecture, full-stack development, or new opportunities. Let's make something exceptional.