@binaykumardas

Binay Kumar Das

@binaykumardasBangalore, IndiaJoined June 2026

An implementation of good idea can change lots of things

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Binay Kumar Das's blogs

binaykumardasfindcoffeemate.hashnode.dev9 posts

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BKBinay Kumar Dasfindcoffeemate.hashnode.dev3d ago · 3 min read

The Feature Had Zero Bugs. We Removed It Anyway

A few week ago, I am building a feature for my Product FindCoffeeMate. It was called “Recently Active Developers.” The idea sounded great. When users landed on the homepage, they’d immediately see dev

BKBinay Kumar Dasfindcoffeemate.hashnode.dev5d ago · 4 min read

A Frontend Can Handle 10,000 Users and Still Fail at 1 Million

A frontend can work perfectly with 10,000 users and completely fall apart at 1 million. The problem usually isn’t React. It’s the decisions we make around it. I’ve seen this happen with dashboards and

BKBinay Kumar Dasfindcoffeemate.hashnode.devJul 14 · 5 min read

I Thought Email Verification Was Just Sending an OTP. Building It Changed My Mind.

A few weeks ago, I added "Email Verification" to the FindCoffeeMate 2.0 backlog. It was sitting there between "fix the profile photo cropper" and "add dark mode." I remember looking at it and thinking

BKBinay Kumar Dasfindcoffeemate.hashnode.devJul 11 · 3 min read

Building FindCoffeeMate Taught Me More About Product Engineering Than Any Course

When I started my career, I thought being a good engineer meant one thing: Build the feature correctly. If the API worked, the UI matched the design, and the tests passed, I considered the job done. B

BKBinay Kumar Dasfindcoffeemate.hashnode.devJul 5 · 4 min read

The Frontend Interview Question That Made Me Rethink Performance Engineering

A few weeks ago, I was interviewing for a Product Frontend role, and I got a question that I thought I had prepared for. The interviewer asked: "Users are complaining that your page takes 4–5 seconds

Binay Kumar Das

About

Available for

Binay Kumar Das's blogs

Recently published

The Feature Had Zero Bugs. We Removed It Anyway

A Frontend Can Handle 10,000 Users and Still Fail at 1 Million

I Thought Email Verification Was Just Sending an OTP. Building It Changed My Mind.

Building FindCoffeeMate Taught Me More About Product Engineering Than Any Course

The Frontend Interview Question That Made Me Rethink Performance Engineering

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Binay Kumar Das

About

Available for

Binay Kumar Das's blogs

Recently published

The Feature Had Zero Bugs. We Removed It Anyway

A Frontend Can Handle 10,000 Users and Still Fail at 1 Million

I Thought Email Verification Was Just Sending an OTP. Building It Changed My Mind.

Building FindCoffeeMate Taught Me More About Product Engineering Than Any Course

The Frontend Interview Question That Made Me Rethink Performance Engineering