Interview guide for ecommerce roles: a loop for store, marketplace and merchandising hires

Ecommerce jobs sit across several functions at once. The same person may be asked to fix a product page that converts poorly, chase a marketplace suspension, decide which products go on the home page, argue with the warehouse about a shipping promise and explain to finance why returns went up. Candidates describe this work with confident vocabulary, and loops that ask about "growth" or "the customer journey" reward the vocabulary. What predicts performance is the ability to read store data and find the real problem, to write and structure product information that sells and passes marketplace rules, and to make trade-offs between conversion, margin, inventory and customer promises. This guide gives ecommerce leaders a loop for ecommerce managers, marketplace specialists and digital merchandisers at direct-to-consumer brands and retailers, with adjustments for content, operations and senior roles at the end.

Campaign and brand roles are better served by the interview guide for marketing roles, and analytics specialists by the interview guide for data analysts. Store-based roles are in the interview guide for retail roles, and fulfillment centers in the interview guide for warehouse roles.

The loop at a glance

Stages 3 and 4 can run live on a video call with a shared screen; that avoids long take-home work and shows how the candidate thinks.

Stage 1: the screen (20 minutes)

• "Which platforms and marketplaces have you run day to day, and what did you own on each?" Listen for: specific tasks such as catalog uploads, promotions, feeds or account health, not only "I used it".
• "What was the store's approximate size: orders a week, number of products, team size?" Scale changes the job.
• "This role owns [example: the site and two marketplaces, with a merchandiser and an agency]. Does that match what you want?"
• "The pay range is [range]." State it up front, as many pay transparency laws require it in the posting.

Stage 2: hiring manager interview (40 minutes)

1. "Tell me about a change you made that moved conversion or average order value. How did you know it was your change and not something else?" Listen for: a test or a before-and-after with seasonality considered, and an honest share of credit.
2. "Tell me about a launch or promotion that went wrong. What happened, and what did you change in the process?" Listen for: a specific failure, such as a pricing error or an oversold product, and a fix to the process, not just to the incident.
3. "How do you decide what goes on the home page and in the first row of a category?" Listen for: margin, inventory depth, newness and data, not only taste.
4. "A best-selling product is about to run out of stock for six weeks. What do you do on the site and on marketplaces?" Listen for: back-in-stock capture, substitutes, adjusting paid traffic and marketplace listing health.

Stage 3: store metrics diagnosis (45 minutes)

Give a one-page weekly report for an invented store, clearly labelled as example data. Example: sessions are flat, conversion has dropped from 2.4% to 1.9%, mobile checkout completion fell sharply on one day, paid social traffic doubled, and a shipping threshold changed the same week.

Ask three questions: what do you check first, what do you think happened, and what do you do this week? Give the candidate the answers to their follow-up questions from a prepared sheet, the same for everyone.

What to score

• Segmenting: breaks the drop down by device, channel and funnel step before guessing.
• Hypotheses: considers several causes, such as a checkout bug, a change in traffic mix and the shipping threshold, and says how to tell them apart.
• Prioritizing: treats a possible checkout fault as urgent.
• Communication: explains the conclusion simply enough for a founder or a finance lead.

Stage 4: listing and merchandising work sample (45 minutes)

Provide raw product information for an invented product: a supplier spreadsheet row with inconsistent units, three photos, a vague supplier description and two claims that need checking (for example, "eco-friendly" and "clinically proven"). Ask the candidate to:

• Write a product title, bullet points and description for your site.
• List the attributes they would fill in for a marketplace category, and which ones they need to confirm.
• Say what they would do about the two claims before publishing.
• Choose where the product should sit in the navigation and which products it should cross-sell with.

Score product data accuracy and consistency, copy that answers buyers' real questions, recognizing that the claims need substantiation before use, and merchandising logic. Tell candidates that the product is invented and that nothing they write will be published; see how to evaluate a take-home assignment if you run this as homework instead.

Stage 5: cross-functional interview (40 minutes)

1. Operations lead: "Marketing wants to promise next-day delivery for a holiday campaign. The warehouse says it cannot be done for one region. What do you do?" Listen for: the customer promise matched to real capacity, and a written decision.
2. Customer service lead: "Returns for one product have tripled, and the reasons say 'not as described'. What do you do?" Listen for: reading the reviews and return reasons, fixing the listing or photos, and telling the team.
3. Either: "An agency offers to boost the product's reviews by giving free products to people who agree to post five-star reviews. What do you say?" Listen for: refusing, and explaining that conditioning an incentive on a particular sentiment is a problem under the FTC's review rule.
4. Either: "How do you work with influencers or affiliates on disclosure?" Listen for: requiring clear disclosure of the relationship.

Scorecard competencies and weights

Example weights for an ecommerce manager. Lock yours before the first candidate.

For a marketplace specialist, move weight to listings and account health; for a merchandiser, to merchandising and product data. The weighted interview scorecard explains how to combine scores.

Legal points to check

These are rules the hire will work under, so they belong in the interview as judgment questions. Checked against the linked primary sources as of October 2026. Not legal advice; your counsel decides.

• Consumer reviews. The FTC's Trade Regulation Rule on the Use of Consumer Reviews and Testimonials, 16 CFR Part 465, covers fake or false reviews and testimonials, buying positive or negative reviews, insider reviews, company-controlled review websites, review suppression and fake indicators of social media influence. The FTC says the rule took effect on October 21, 2024. Under 16 CFR 465.5, an officer or manager may not write a review of the business without clearly disclosing the relationship, and is restricted from soliciting reviews from employees that are posted without disclosure.
• Endorsements and influencers. The FTC's Endorsement Guides say a material connection between an endorser and a marketer should be disclosed clearly and conspicuously when consumers would not expect it and it would affect how they weigh the endorsement.
• Work samples. Use invented or public data and products, keep exercises short, and never publish candidate work. That keeps the exercise fair and avoids giving candidates confidential data.
• Background checks. Roles with access to payment systems or customer data are sometimes checked. If a consumer reporting agency runs it, follow 15 U.S.C. 1681b(b) and the FCRA background check process.

The decision rule

1. Floor: at least 3 on store data diagnosis; ecommerce problems show up in data first.
2. Floor: at least 2 on compliance judgment; a hire who would buy reviews is a liability, whatever their growth record.
3. Weighted total: in this example, 2.8 or higher on a 1–4 scale is an offer.
4. References: ask a former manager about a launch the candidate ran and how they handled a mistake on the live site.

Adjusting the loop

Mistakes that weaken ecommerce loops

• Hiring for platform names. Platforms can be learned in weeks; judgment cannot.
• Long unpaid homework on your real store. Use invented data and a live exercise.
• Taking growth numbers at face value. Ask what else changed at the same time.
• Skipping compliance questions. Reviews, claims and disclosure are part of the daily job.