Why pre-screen senior media buyers before the client interview
Media buying resumes are unusually easy to inflate because the numbers are large and rarely checked. A buyer who executed inside a platform on someone else's strategy and a buyer who owned allocation across channels both describe managing spend. The distinction matters at senior level, because the second one is who you need when a channel stops working and something has to move. A short screen gets to the budget they personally controlled, which is the number that separates them.
What actually matters when screening Senior Media Buyer candidates
- 01
Campaigns that performed
Ask for specific accounts they managed: monthly spend, platform mix (Meta, Google, TikTok, DV360), and ROAS, CPA or MER movement they can attribute to their own decisions.
- 02
Audience and segmentation
Probe how they build and test audiences: broad versus interest stacking, lookalike seeds, exclusion lists, retargeting windows, and when they moved spend to Advantage+ or Performance Max.
- 03
Measurement and testing
Test measurement literacy: pixel and CAPI setup, GA4 versus platform attribution gaps, holdout or geo-lift tests, and how they judge creative winners past early noise.
- 04
Working with the business
Look for evidence they worked with creative teams, clients or founders on briefs, margin targets and pacing, including how they handled a month where spend outran revenue.
Pre-screening questions to ask Senior Media Buyer candidates
12 questions grouped by what they test. Ask the same set in every screen and score answers on a consistent scale, or send them as an async video screen and compare answers side by side.
Budget and return
3 questions01Have you worked with a large budget for a media buying campaign? Can you share details?
Listen forMonthly or annual spend they personally controlled, across which channels, and whether they set the allocation or executed someone else's split.
Quotes agency-wide or team budgets as their own, or cannot say what portion they had authority over.
02Can you discuss a time you had to balance a tight budget against high performance expectations?
Listen forA specific trade they made, such as cutting a channel to fund another, with the reasoning and what it cost them in the short term.
Describes working harder within the same budget, with no reallocation decision or trade-off named.
03Can you describe a time you successfully negotiated media rates?
Listen forA direct negotiation with a publisher or platform, with the leverage they used and roughly what the improvement was worth annually.
Rates negotiated entirely by someone else, or a saving claimed with no figure and no account of what made it possible.
Choosing the channel
3 questions04What is your process for identifying the best media channels for a campaign?
Listen forChannel choice driven by where the audience already is and what the objective needs, with a channel they deliberately rejected and why.
Starts from the same channel mix every time, or picks channels because the client expects to see them.
05Can you explain your approach to media planning and buying?
Listen forA plan built from the objective backwards, with budget staged for learning before scaling rather than committed in full on day one.
Commits the whole budget up front, or a planning process with no phase for testing before scale.
06Can you describe your experience with programmatic buying?
Listen forHands-on platform work with inventory quality addressed: placement exclusions, viewability, fraud, and what they blocked after finding a problem.
Programmatic left entirely to a partner, or no awareness of where impressions were actually being served.
Measurement that holds
3 questions07What methods do you use to measure campaign success?
Listen forMeasures that reach revenue rather than stopping at the platform, with awareness that reported conversions overstate the channel's own contribution.
Reports platform-attributed return on ad spend as fact, with no independent check on incrementality.
08What role does data analysis play in your media buying strategy?
Listen forAnalysis they perform themselves, with a specific finding that changed allocation, plus a holdout or geographic test if they have run one.
Relies entirely on platform dashboards, or has never validated a result outside the tool that produced it.
09Which key performance indicators do you focus on in a digital media campaign?
Listen forA small set tied to the business objective, with a stated view on which vanity metrics they refuse to optimise toward.
Reports impressions and click-through rate as headline measures, with no downstream metric behind them.
Handling bad weeks
3 questions10How would you handle a situation where a campaign is not performing as expected?
Listen forA diagnosis order they follow: delivery, creative, audience, landing page, plus a stated point at which they stop spending rather than optimising.
Changes several variables at once, or keeps spending on a losing campaign in the hope it turns.
11Have you managed multiple campaigns at once? How did you prioritise?
Listen forA concrete triage rule such as spend at risk or days to deadline, plus what they let run untouched to protect attention for what mattered.
Checks everything daily with no prioritisation, or prioritises by whichever client complained most recently.
12Which software or tools do you typically use in media buying and planning?
Listen forNamed platforms plus how they consolidate reporting across them, and what they do when two sources disagree on the same number.
Reports each channel in isolation, or has no process for reconciling conflicting numbers between platforms.
How to score responses
Score every candidate on the same four criteria immediately after the screen. At this stage you are shortlisting for panel interviews, not making the final call.
Campaigns that performed
30%5Names real accounts with monthly budget figures, before and after CPA or MER numbers, and the bidding or budget changes that produced them.
Audience and segmentation
25%5Explains audience structure choices with reasoning about seed quality, overlap, and funnel stage rather than reciting default platform settings.
Measurement and testing
30%5Describes incrementality or holdout testing, states significance thresholds and learning phase limits, and admits which results were inconclusive.
Working with the business
15%5Cites concrete pacing or budget conversations, briefed creative from performance data, and flagged deteriorating accounts before the client noticed.
Media buying numbers are large, easy to inflate and rarely checked. A one-way video screen lets you hear the budget a candidate personally controlled before you put them in front of a client.
Try it on HirevireScreening FAQ
Process basics
How long should a pre-screening round for a senior media buyer take?
Fifteen minutes across eight to ten questions, answered async. Enough to establish the budget they controlled, hear their channel reasoning and a failure they owned, before a client-facing interview where they meet the people whose money it is.
What should the screen establish that a resume does not?
Whether they set strategy or executed it. Both are described as managing spend. Ask who decided the channel split and who they had to convince, and the two profiles separate immediately.
Evaluating answers
What is the strongest signal when screening a media buyer?
Willingness to name a campaign that lost money and say why. Buyers who have run real budgets have all had one, and the useful ones can point to the moment they should have pulled it. Candidates with an unbroken record of winners are selecting what they tell you.
How do I judge measurement answers when attribution is messy?
Listen for whether they acknowledge the problem. A buyer who knows platform-reported conversions overstate their own contribution, and who has run a holdout or a geographic test to check, is worth far more than one quoting return on ad spend from the ad platform alone.
Go deeper on this role
Sanat has been hiring since 2012 and watching the recruitment industry change up close ever since, and turned that screening process into Hirevire's video screening platform. LinkedIn
