How to Become a Media Buyer from Scratch: What a Media Buyer Does at an Agency, a 90-Day Plan, and What to Expect at the Interview
Becoming a media buyer from scratch: agency duties, skills map, 90-day study plan, first case studies without clients, test assignment and interview at MOVE.
In short
A media buyer turns a client’s ad budget into leads, bookings, and sales, and can explain every hryvnia in the report. At an agency, this means daily work with audiences, creatives, bids, and numbers for several brands at once, and it has nothing to do with the “Boost” button. This article covers: what a media buyer actually does during the day at MOVE, what skills are needed, a 90-day self-study plan in table form, how to build first cases without clients, what we expect from a portfolio and test assignment, what questions we ask at the interview, what the path from junior to team lead looks like, and six mistakes that make beginners stall at the start. A related profession that starts from the same data is SEO specialist.
What a media buyer actually does at an agency
The media buyer job posting at MOVE fits in four lines: setting up and running campaigns in Meta Ads and Google Ads, audience analysis and creative testing, CPA and ROAS optimization, transparent reporting on results. Behind each line is a daily routine, and that routine is what determines whether the profession is a fit for you.
Morning: numbers. The day starts with reviewing accounts. Not “how’s the ad doing” but specifically: yesterday’s lead cost compared to the weekly average, ad frequency, whether an audience has “burned out,” whether a creative got rejected. This takes 20–40 minutes per client, and this is where most problems surface before they’ve eaten through the budget.
Daytime: hypotheses and launches. Next comes hands-on work: building a new interest-based or look-alike audience, launching an A/B test of two headlines, shifting budget from a campaign that’s getting more expensive to one that delivers cheaper leads. Every action has a reason you can state out loud; without that, optimization turns into pressing buttons for the sake of it.
Communication. At an agency, a media buyer doesn’t work alone. They brief a designer on new banners, discuss with a content creator which clip from a shoot should go into the ad, and explain to a project manager why leads got more expensive this week and what’s being done about it. The ability to talk to people who don’t read ad accounts takes up half the job.
Reporting. A report is prepared for the client weekly or monthly. At MOVE, it’s transparent: spend, leads, cost per lead, what was tested, what worked, what’s next. In targeting and performance at MOVE, advertising is measured in clients, not clicks, and that’s how results get presented.
For the dental network Parodent, this routine delivered +30% appointment bookings, 420,000 ad views, and a 23% reduction in cost per lead. Behind these numbers are months of daily work with audiences and creatives.
Skills map: hard and soft
A media buyer’s job rests on two pillars: technical and communication skills. Neither one works without the other.
| Group | Skill | Why it matters at an agency |
|---|---|---|
| Hard | Meta Ads Manager structure: campaign → ad set → ad | Without this you can’t build even a simple campaign |
| Hard | Google Ads: search, keyword research, negative keywords, Performance Max | Clients with complex products come here specifically |
| Hard | Pixel, events, conversions, UTM tags | Without correct tracking there’s nothing to optimize |
| Hard | Metrics: CPM, CTR, CPC, CPA, ROAS, frequency | This is the language you use to explain results |
| Hard | Spreadsheets: summaries, formulas, period comparisons | Client reports and test analysis live in spreadsheets |
| Hard | Basic creative logic: hook, offer, call to action | You brief the designer and evaluate banners |
| Soft | Structured thinking | Hypothesis → test → conclusion, not chaotic tweaks |
| Soft | Communication with non-technical people | The client needs to understand what they’re paying for |
| Soft | Discipline of daily monitoring | A week without watching the account means a wasted budget |
| Soft | Calm with failed tests | Most hypotheses don’t work, and that’s normal |
Notice: “creativity” in the artistic sense isn’t on the list. A media buyer needs to be precise and consistent. Creativity here lives in hypotheses, not in pictures.
90-day self-study plan
This is a plan for someone who dedicates 1.5–2 hours a day to learning. The principle is simple: every week has a practical result you can show, not just a lesson completed.
| Weeks | What to study | How to practice |
|---|---|---|
| 1–2 | How the ad auction works, Meta Ads Manager structure, types of campaign objectives | Create an ad account, build a test campaign without launching it, break down every field |
| 3–4 | Audiences: interests, look-alike, retargeting; pixel and events | Install a pixel on your own site or landing page, set up 3 events, verify them in the tester |
| 5–6 | Creatives: hook, offer, formats, ad copy | Make 6 banners and 2 videos for one product, describe the hypothesis behind each |
| 7–8 | First budget: launch, daily monitoring, reading reports | Launch a campaign on a small personal budget, keep a diary of changes |
| 9–10 | A/B testing, CPA optimization, scaling | Run 3 tests (audience, creative, placement), record winners and reasons |
| 11 | Google Ads: search campaigns, keyword research, negative keywords | Build a keyword list of 50–100 queries for a local business, write ad copy |
| 12 | Reporting and presenting results | Put together 2–3 cases in the format “task → what was done → numbers → conclusions” |
| 13 | Portfolio, resume, interview prep | Complete a test assignment from an open job posting, compile a portfolio into one document |
Learning sources: official help centers from Meta and Google (they’re free and always up to date), niche channels run by practitioners, case breakdowns. If you need structure and feedback from people who run real budgets daily, there’s Move School, MOVE’s digital marketing course with six blocks, three months of support, and live sessions. But no course replaces your own budget spent with understanding.
First cases without clients
The main trap for beginners: “I can’t get hired without cases, and I have no cases because I can’t get hired.” The solution is simple: build your first cases without clients.
Your own project. The cleanest option. Create a simple product: a free checklist, a mini-course, a Telegram channel, a service you know how to provide yourself. Build a landing page, install a pixel, launch ads on a small personal budget. You’ll get the full cycle: from hypothesis to report. Even if the result is modest, you’ll be able to explain exactly why and what you’d do differently.
Businesses of people you know. A coffee shop, a manicure artist, a tutor, a small store: everyone knows someone like this. Agree honestly: you set up ads for free or for a symbolic fee, they provide the budget and access to the numbers. Be sure to record the starting point: how many leads there were before you and at what cost. Without this, there’s no case, just a story.
Volunteer projects. Foundations, shelters, and community initiatives constantly need reach and donations but have no budget for an agency. This is great ground for testing audiences and creatives, and the funds or volunteers gathered become a convincing case.
In every case, keep a diary: date, what you changed, why, what happened. At the interview, this diary is worth more than any certificate.
Portfolio and test assignment
A media buyer’s portfolio consists of 2–4 cases, and screenshots of an ad account with big numbers don’t replace it. Every case follows the same structure:
- Task and starting point: what kind of business, what was wanted, what the metrics were before you.
- What was done: audiences, creatives, budgets, tests, brief and specific.
- Numbers: spent, leads received, cost per lead, trends.
- Conclusions: what worked, what didn’t, what would be done differently.
Point four matters most. A case with an honest “this hypothesis failed, and here’s why” builds more trust than three cases with perfect graphs.
A test assignment at agencies usually looks like this: you’re given a business description (for example, an auto repair shop in Kyiv or a clinic in Poltava), an approximate budget, and asked to outline the campaign structure, audiences, 3–5 creative ideas, and how you’ll evaluate the result. The test assignment checks not knowledge of buttons but the way you think. The strongest submissions come from candidates who ask clarifying questions, state assumptions explicitly, and explain why they chose a particular budget split.
We wrote in detail about how an agency prices advertising and what goes into campaign work in the article about the price of targeted advertising. It’s useful to read before the test assignment to understand the logic from the client’s side.
Interview at MOVE: what we ask and why
We don’t run a terminology exam. What matters to us is understanding how a person thinks through real situations. Here are typical questions and what’s behind them.
- “Tell us about a case that didn’t work out.” We check honesty and the ability to analyze. Someone whose “everything always worked” either never ran real budgets or never looked at the numbers.
- “Cost per lead doubled in three days. What are your steps?” We check structured thinking: first check frequency and audience, then creatives, then technical things (pixel, landing page), and only then adjust bids.
- “How would you explain to a client that the first week is a test week?” We check communication. A media buyer at MOVE talks to the client directly, so the ability to explain without jargon is essential.
- “Which metric would you show a restaurant owner, and which would you keep for yourself?” We check understanding: the owner cares about bookings and cost per guest, while CTR and CPM remain your working tools.
- “What do you do when a creative works but the client doesn’t like it?” We check the balance between results and relationships: show the numbers, propose a parallel test, rather than arguing or silently agreeing.
We are a Meta Partner and Google Partner, running campaigns for HoReCa, retail, dental clinics, and auto repair shops, so at the interview we often go over real situations from our niches. It’s worth preparing by studying other people’s cases; memorizing facts won’t help here: look at how the work was built for Puzata Hata, where targeted advertising combined with TikTok and Instagram delivered 1.6 million views in three months, and try to describe which audiences and formats you’d test for a brand like that.
Growth path: junior → mid-level → team lead
Junior. Runs a few small accounts under the supervision of a more experienced colleague. The main task at this stage is to avoid mistakes in the routine: daily monitoring, correct setup, timely reports. At this stage you ask a lot of questions, and that’s the right approach. At MOVE, the job conditions directly include learning and growth inside the team.
Mid-level. Independently responsible for a client’s results: CPA, ROAS, trends. Plans tests, talks to the client, and makes decisions about budget reallocation on their own. Sign of the move to mid-level: you can take a new project from brief to first report without outside help.
Senior and team lead. From here, the path splits. One direction leads to deep expertise: complex funnels, large budgets, new platforms. The other leads to management: at MOVE, the team lead coordinates the team, sets tasks and oversees execution, negotiates with clients, presents strategies and results, and sets and monitors campaign KPIs. That means less time in the ad account and more time with people and numbers at the business level.
Neither transition is tied to years of tenure. It’s tied to what you can be responsible for without a safety net.
6 beginner mistakes
- Learning buttons instead of logic. The account interface changes several times a year. The logic of the auction, audiences, and funnel stays the same. Whoever learns the logic can figure out a new interface in a day.
- Launching without tracking. A campaign without a pixel and events spends budget and gives no data. Tracking first, advertising second.
- Hourly tweaks. The algorithm needs time to learn. Whoever changes bids and audiences several times a day never finds out what actually works.
- One creative for the whole campaign. Creatives burn out, audiences get tired, price goes up. At least 3–4 variants at launch and regular refreshes.
- A report with clicks instead of leads. The client doesn’t need CTR. They need to know how much a lead costs and whether there are more of them. Whoever counts in clicks doesn’t see the business.
- Fear of showing a failed case. Beginners hide failures, but failures are exactly what proves experience. One analyzed failure in a portfolio is worth more than three “perfect” screenshots.
Media buying at an agency rests on daily discipline, honest numbers, and the ability to explain results to a person who has never opened an ad account. If after this article you’re not scared off by the routine, and instead want to test your hypotheses on real budgets, check out the careers page at MOVE. The media buyer position opens periodically, and other roles on the team, from content creator to project manager, often become a first step toward performance marketing.