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The build log

How we built a 450,000-line SaaS solo in ~2.5 months

Deepak Nagar April 1, 2026 7 min read
How we built a 450,000-line SaaS solo in ~2.5 months

FlexiCommerce is a multi-tenant e-commerce SaaS: ~450,000 lines, Laravel 12 / Filament 5, Vue 3, three native Flutter apps, ~500 API endpoints, 187 data models. Built solo, in roughly two and a half months. Here's how — and why it matters for anyone hiring us.

Leverage, not heroics

Speed didn't come from working 20-hour days. It came from leverage: Laravel + Filament for the admin (70 resources nearly for free), a disciplined data model (187 of them, but consistent), and AI as a real tool in the loop — including the AI Store Generator we shipped into the product.

Senior decisions compound

The biggest time savings were decisions not made twice. One auth system. One payments abstraction across Razorpay, PayU, and PhonePe. One theming engine (108 sections). When the foundation is right, features get cheap.

Why this matters for your build

This is the muscle memory we bring to client work. When you hire us, you get a team that has already solved multi-tenancy, payments, and native apps in production — so your build skips the expensive mistakes.

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Deepak Nagar — founder & lead engineer, Ujjwal Technolabs

Deepak Nagar

Founder of Ujjwal Technolabs — 12+ years full-stack, and the engineer who built FlexiCommerce solo. We build production SaaS for clients and run our own.

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