@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.dev7 posts

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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

BKBinay Kumar Dasfindcoffeemate.hashnode.devJun 25 · 7 min read

The Connect Button That Wasn't Simple: Building User Relationships in FindCoffeeMate

When I started building the User Connection system for FindCoffeeMate, I thought it would be one of those "easy" features. After all, it's just a button on a profile page. A user visits another user's

BKBinay Kumar Dasfindcoffeemate.hashnode.devJun 19 · 4 min read

How I Fixed a Bug That Made Every Chat Message Appear Twice

I’ve been working on a real-time messaging feature for FindCoffeeMate, the app I’m building to help developers connect over coffee and collaborate on ideas. As both the product owner and the engineer

Binay Kumar Das

About

Available for

Binay Kumar Das's blogs

Recently published

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

The Connect Button That Wasn't Simple: Building User Relationships in FindCoffeeMate

How I Fixed a Bug That Made Every Chat Message Appear Twice

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Binay Kumar Das

About

Available for

Binay Kumar Das's blogs

Recently published

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

The Connect Button That Wasn't Simple: Building User Relationships in FindCoffeeMate

How I Fixed a Bug That Made Every Chat Message Appear Twice