MK

I've spent ten years keeping the internet's split-second ad auctions running. Now I help small businesses put AI to work, and I build apps of my own.

Working from the Chain O'Lakes with teams anywhere.

Scroll down to watch one auction in slow motion.

What I do, in ten seconds

  • Ad tech at scale

    I keep the systems that sell website ads fast, profitable and working, for publishers with huge audiences.

    See how it works
  • AI for small businesses

    I find the repetitive work in a small business and set AI up to handle the first draft, with a person still checking.

    See what that looks like
  • Building and shipping apps

    I take my own ideas from a sketch to a live product: design, build, launch, and keep improving.

    See what I've built

One ad, slowed down

  1. 0 msYou open a news article. There's an empty spot on the page waiting for an ad.
  2. 8 msFirst the page checks what you agreed to in the cookie pop-up. If that check breaks, nothing else works.
  3. 20 msThe page asks a crowd of buyers at once: who wants this spot? That's header bidding, run by Prebid.js.
  4. 45 msBids start landing. Each one is a price for showing one ad to you, right now.
  5. 80 msAmazon TAM sends its bid alongside the ad exchanges.
  6. 125 msGoogle Ad Manager lines up every bid and picks the winner.
  7. 160 msThe winning ad loads into the spot. The publisher gets paid.
  8. 190 msYou never noticed. This happens billions of times a day, and keeping it fast and profitable has been my job for ten years.

So what was I actually doing?

Keeping that machine honest, fast and paid.

  • Plugging publishers in

    Connecting big news and media sites to the auction so their ad space gets real competition from buyers.

    • Prebid.js
    • Google Ad Manager
    • Amazon TAM
    • SSPs
  • Finding what broke

    When ads stop showing, the cause is often hiding in a cookie pop-up, a line of code or a partner's setup. I track it down.

    • Consent and CMPs
    • Header bidding
    • Debugging
  • Following the money

    Reading the numbers to see where revenue leaks, and which settings earn a publisher more for the same page.

    • Yield
    • Margins
  • Teaching it to others

    Training teams to run complicated systems themselves, so they don't need me on every call.

    • Training
    • Documentation

Same instincts, much smaller scale.

From billions of ad auctions a day to one workflow at a time.

Now I help small businesses use AI.

Find the slow, repetitive part. Fix it. Teach people to own it. That works for a five-person office as well as it does for a global publisher.

Through MFCIUS, my consultancy, I help small US businesses pick one safe workflow, let AI draft the first pass, and keep a person in charge of the final say.

~12 hours saved per reporting cycle

An accounting workflow: AI drafts client summaries from approved data, and a person reviews them before anything goes out.

Based on an anonymized client's estimate.

Things I've built and run

Shipped, live, and mine.

  • MFCIUS

    AI adoption for small US businesses.

    Team training, ongoing support and managed automations. Practical help with real workflows, without the hype and without handing your business to a robot.

    Visit mfcius.com
  • Chain O'Lakes AI

    My local AI program for Fox Lake and nearby towns.

    A Chamber workshop called AI for Main Street, training for local teams and ongoing help, so neighborhood businesses can try AI safely, one workflow at a time.

    About the local program
  • Magic Friends

    An AI creativity app for kids.

    Kids aged 4 to 10 draw, design characters, invent recipes and make bedtime stories by dragging and dropping, with no typing needed. Settings and purchases sit behind a grown-ups-only gate.

    Visit magicfriends.com
With friends
I also consult and build alongside friends on their products, including Zibys and Dupli, an AI version of you that handles the first chat with a match on a dating app.
On the shelf
Outfit Cast (metehora.com) suggests what to wear based on the weather, your taste and your schedule. It's shelved for now.

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Ad Tech Bites

Short pieces on how ad tech really works, written so you don't need ten years in the industry to follow along.

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Ad tech puzzle, AI idea, or just saying hi?

Contact

marko.kojic@mfcius.com