Chandan
Kumar

Founder, builder & growth practitioner.

I build websites, marketing systems and experiments around growth, AI and the internet.

Connect with me Explore what I'm building

About

Chandan Kumar

I'm Chandan, founder of Mark 42. I work at the intersection of websites, performance marketing and growth. I'm also interested in AI, automation and building useful things on the internet.

More about me

Now

Updated October 2026

Building

Mark 42 ko grow kar raha hoon aur websites + performance marketing ko better growth systems ke saath combine kar raha hoon.

Learning

AI agents, AI-assisted development aur automation ko deeply explore kar raha hoon.

Exploring

Useful internet products, marketing tools aur new ways of building online.

Looking for

Founders, builders, marketers aur interesting people jinke saath ideas exchange ya collaboration ho sake.

See what I'm working on

Things I'm building

Mark 42Digital growth agency.Active
This websiteThe personal website and the system behind it.Building
See all projects

Useful tools

A few things I've built to make marketing and websites easier to understand.

Ad Spend Leak CalculatorUnderstand where advertising money may be getting wasted. Ad Account Audit ChecklistA practical checklist before changing a campaign.
All tools

Let's connect

Pick whatever fits. Or just say hi.

Work togetherFor businesses that need websites, growth or marketing. CollaborateFor people building something interesting. AI / TechnologyConversations around AI, agents, automation and development. MarketingAds, funnels, websites and what is working right now. Podcast / InterviewFor podcast, interview or speaking opportunities. Build somethingFor experiments and side projects. Just say hiNo agenda required. OtherSomething that does not fit above.
Start a conversation

chandan@mark42.com · WhatsApp