Search this question and you get two kinds of answers: a job-board description written by someone who has never opened Ads Manager, or a definition from the TV era about negotiating ad slots. Neither is what the job looks like today.

I've worked as a media buyer for 4+ years, managing $5M+ in ad spend across Meta and Google for 50+ DTC, SaaS and service brands in the US and Canada. Here's what the work actually involves, what separates a good media buyer from an expensive one, and how to tell which one you're about to hire.

The short answer

A media buyer decides where an advertising budget goes and keeps moving it toward whatever is making money. In practice that means planning campaigns, launching ads, reading the numbers every day, cutting what isn't working, scaling what is, and feeding the platforms the creative and data they need to find buyers. The title is about buying media. The job is about turning ad spend into profitable customers.

Two jobs share one name

"Media buyer" originally meant someone who negotiated and purchased ad space: TV slots, radio spots, print pages, billboards. That role still exists at big agencies, and programmatic buyers do a modern version of it.

When most brands say they need a media buyer today, they mean a performance media buyer: someone who runs paid social and paid search on platforms like Meta and Google, where nobody negotiates a price. The auction sets the price. Your edge comes from what you put into the auction and how fast you react to what comes out of it. That's the job this article is about.

What a media buyer does, day to day

No two days look the same, but the work falls into six buckets.

1. Reading the account. Every morning starts with the numbers: spend pacing, cost per acquisition, return on ad spend, and anything that moved more overnight than it should have. Most of the job is noticing the one thing that changed.

2. Moving budget. Money flows toward the campaigns and ads producing profitable results and away from the ones that aren't. Done well, this is boring and disciplined. Done badly, it's daily panic dressed up as optimization.

3. Building and structuring campaigns. Objectives, campaign structure, bidding strategy, and on Google, keywords and product feeds. Structure matters less than it used to, but a messy account still makes every other decision harder.

4. Testing creative. The biggest lever a media buyer has today (more on why below). Launching new concepts on a steady cadence, reading early signals like hook rate and click-through rate, and deciding what earns more spend.

5. Keeping measurement honest. Pixel and Conversions API setup, UTMs, analytics, and a regular check that what the platform claims lines up with what actually landed in the bank. Since Apple's 2021 privacy changes, platform-reported numbers deserve a skeptical eye.

6. Reporting decisions. Not a 40-tab dashboard. A short note on what changed, why, and what happens next week.

Pool rule 009Report decisions, not dashboards.

Why the job is mostly about creative now

A few years ago, a big part of media buying was targeting: stacking interests, building lookalikes, splitting audiences into dozens of ad sets. The platforms have since automated most of that. Meta's algorithm now finds buyers better than a human picking interests, and Google's Performance Max does the same across its inventory.

So where did the leverage go? Into the inputs the algorithm can't make for itself: the creative, the offer, and the quality of the conversion data. The ad decides who stops scrolling, which means it effectively decides who you're targeting. I wrote more about this in why most accounts have a creative volume problem, not a media buying problem.

That's why I build the creative as well as buying the media. A media buyer who can't get new ads made quickly ends up optimizing the same tired ads until they stop working.

Pool rule 002Creative is the targeting.

The skills that separate good media buyers from expensive ones

  • Unit economics. Knowing margin, average order value and customer lifetime value well enough to know what a customer is actually worth. A "great ROAS" on a thin-margin product can still lose money.
  • Platform fluency. Ads Manager, Google Ads, Performance Max, product feeds, attribution settings. The tools change every quarter, so this is a habit, not a certificate.
  • Creative judgment. Being able to look at an ad, say why it will or won't stop the scroll, and brief the next one.
  • Discipline. Deciding when to kill and when to scale before launch, then following the rules. My kill rules for Meta are the ones I actually use.
  • Plain communication. Explaining to a founder why spend went down on purpose, without hiding behind jargon.

Freelance media buyer, agency, or in-house?

A freelance media buyer puts a senior person directly on your account, usually for less than an agency. The trade-off is capacity: one person, one set of hours. Ask what happens when they're out sick.

An agency gives you a team and more coverage, but often a junior buyer on the day-to-day, with the senior person from the sales call checking in monthly. Ask who will actually run your account.

An in-house hire gives you full attention and deep product knowledge, at the highest fixed cost and the slowest ramp. It usually makes sense once paid media is a large, steady share of your growth.

I work as an independent operator, remotely from Karachi on US and Canada hours, so I'm biased. The right answer depends on your budget and on how much creative you need produced alongside the buying. Here's how I work.

When should you hire a media buyer?

  • You're spending every month, but nobody owns the account day to day.
  • Results swing week to week and nobody can explain why.
  • Your best ad is months old and there's nothing ready to replace it.
  • You don't trust the numbers the platforms report.
  • The founder is still the one logging in at night to change budgets.

What to ask before you hire one

  • "Can you show me a result tied to revenue or profit?" Not a screenshot of platform ROAS.
  • "What are your kill rules?" A good buyer answers with numbers. A weak one says "it depends" and stops there.
  • "Where does new creative come from, and how often?"
  • "Who owns the ad account?" You should. Always. If a buyer wants to run your spend inside their own account, walk away.
  • "What does a weekly update look like?"

One red flag worth knowing: anyone who guarantees a specific ROAS before seeing your numbers is selling confidence, not results.

Pool rule 006Screenshots aren't results. P&L or it didn't happen.

Quick answers

Is a media buyer the same as a digital marketer? No. "Digital marketer" covers SEO, email, organic social and more. A media buyer specializes in paid advertising and the budget behind it.

Does a media buyer make the ads? Traditionally, no. A creative team or a creative strategist decides what the ads say. More buyers, me included, now do both, because the two jobs feed each other.

Which platforms does a media buyer work on? For most performance brands: Meta (Facebook and Instagram) and Google (Search, Shopping, Performance Max, YouTube), plus TikTok and others depending on the audience.

How much does a media buyer cost? Freelancers and agencies usually charge a monthly retainer, a percentage of ad spend, or a mix of both. It depends on your spend and how much creative is included. Tell me about your account and I'll give you a straight number.

The one-line version

A media buyer's job is to make sure every dollar of ad spend has a reason to be where it is. The best ones spend less time in the settings and more time on what goes into the auction: better creative, cleaner data, and faster decisions.