Rahul Singh · Principal Engineer · Product builder · Mumbai

I build products and ship them tomarket.

For 11+ years I've been taking products from first commit to real users. Today I lead 15+ engineers at Livlong, and I still write production code most days.

AI is one of my tools.
Shipping is the job.
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Rahul Singh, smiling, in a black t-shirt

that's me, probably mid-deploy

psst… he still ships code most days ☕

How a product gets out the door

the part I enjoy most: the whole loop, not one slice of it

  1. 1

    Shape

    Turn a fuzzy idea into a small first version a team can actually build.

  2. 2

    Build

    Write the hard parts myself, set the architecture, keep the team unblocked.

  3. 3

    Launch

    Get it in front of real users, then fix what they actually hit.

  4. 4

    Scale

    Make it fast and keep it running: microservices, performance, SEO.

Shipping log

things that made it to market

stamped = live in production

SHIPPED

Livlong

livlong.com rebuild

Moved the public site off legacy WordPress. Lighthouse went from ~65–70 to 98–99, SEO to 100.

webSEOperformance
SHIPPED

Livlong

Lab-test marketplace

Built and launched a lab-test marketplace end to end.

ReactNode.jsPostgres
SHIPPED

Livlong

Servicing portals

Internal portals the servicing teams work in.

ReactNode.js
IN PROD

Livlong

AI chatbot + voice calling

An AI chatbot and AI voice calling, both running in production.

LLMsvoice
IN PROD

Livlong

AI agents across CRM, email & WhatsApp

AI agents working across CRM, email and WhatsApp.

agentsworkflows
0 → 1

nurtr

Live chess classes platform

The company's first product, built from scratch. Later led the move from monolith to microservices.

ed-techmicroservices

In numbers

building and shipping products
11+ yrs
engineers in my team today
15+
first product at nurtr, built from scratch
0 → 1
Lighthouse score on livlong.com
65 → 98
of my week is still hands-on code
~60%

Chapters

2015 → now

2021 – now · Mumbai

Livlong

Team Lead → Principal Engineer

  • Promoted to Principal after ~2 years.
  • Lead 15+ engineers across React, Node.js and PostgreSQL on AWS.
  • Shipped the site rebuild, a marketplace, portals and AI systems.

2017 – 2021

nurtr

One of the first engineers → Sr. Full Stack

  • Built the first product, live chess classes, from scratch.
  • Led the monolith → microservices migration.
  • Mentored a team of 4.

2015 – 2017 · Pune

Mindtree

Software Engineer

  • QA → early Angular 2 → Node.js full-stack.
  • "A Player" and "Best Team Player" awards.

How I work

Hands on keys

About 60% code, 40% people and stakeholders. A working branch beats a slide deck.

Done means live

A feature isn't finished when it merges. It's finished when users have it and it holds up.

Speed is a feature

The livlong.com rebuild took Lighthouse from the 60s to 98. Fast products win more users.

Toolbox