Block Customer Success Manager Interview Questions

1.Tell me about a time you had to advocate for a seller or merchant customer whose needs were in tension with what your company's product team wanted to build. How did you handle it?

2.Walk me through a time a customer came to you frustrated because a payment or money transfer didn't go through as expected. How did you diagnose what happened and what did you do about it?

3.Tell me about a time you had to get up to speed quickly on an unfamiliar technical standard, regulation, or protocol that was directly affecting a customer's experience. What did you learn and how did you use it?

4.You're managing a portfolio of Square sellers and several of them start reporting that their card readers are behaving inconsistently — some transactions go through, some don't, with no clear pattern. How do you approach this, and where do you draw the line between troubleshooting yourself and escalating?

5.Tell me about a time you were managing a seller account that was churning or at serious risk of leaving. Walk me through what you did, what didn't work, and what the outcome was.

6.Describe a time when a customer disputed a transaction or claimed funds were missing, and the internal data told a different story than what the customer was reporting. How did you work through the discrepancy?

7.Estimate how many Square sellers in the U.S. are at risk of churning in any given month. Walk me through your assumptions and how you'd use that number.

8.You have 40 accounts in your Square portfolio. Leadership just told you to increase your NPS coverage rate — the percentage of customers who complete a satisfaction survey — from 30% to 60% this quarter. How do you get there?

9.Cash App's peer-to-peer payment volume is strong, but business account activation on Cash App for Business is lagging in your segment. Leadership wants you to diagnose whether this is a product problem, a sales handoff problem, or a CSM engagement problem. How do you figure out which one it is?

10.You're told your segment's gross payment volume per seller is flat year-over-year, but a competing CSM team that handles a similar seller profile grew GPV 18% in the same period. Leadership asks you to figure out the gap. Walk me through your approach.

11.Square is expanding a new embedded lending product — think Square Loans — into a vertical where sellers have historically had very low loan uptake. You have 25 sellers in that vertical. How do you build and test an outreach strategy, and how do you know if it's working?

12.You manage a portfolio of 30 Square sellers. End of Q3, you're at 65% of your expansion revenue goal with one month left. You can't get there by going wide — walk me through exactly how you'd decide where to focus to close the gap.

13.How do you decide which customers in your portfolio to spend the most time on in a given quarter? Walk me through your actual prioritization logic.

14.What does a healthy versus unhealthy customer look like to you in the first 90 days after onboarding? Which metrics matter most?

15.You notice that one of your larger Square sellers has been steadily processing less volume over the past three months, but they haven't flagged anything wrong and your last QBR went fine. How do you approach this?

16.How do you run a quarterly business review with a seller who's sophisticated enough to push back on your talking points? What's your prep process and what do you do when the conversation goes sideways?

17.You're trying to expand a seller's use of Square Banking — they're already processing payments with Square but haven't touched Square Loans or instant transfer. How do you make the case to a seller who's skeptical of mixing their banking with their POS vendor?

18.You own a segment of Cash App business accounts and you're seeing a pattern: activation rates are solid but 60-day retention is dropping. Leadership wants a root cause and a plan in two weeks. How do you structure your investigation and what do you prioritize?

19.A Square seller calls you upset because their account was flagged for unusual activity and payouts are on hold. They say they have payroll due in 48 hours. How do you handle the next two hours?

20.You're onboarding a new mid-market restaurant group onto Square for Restaurants. Two weeks in, the owner tells you their GM thinks the system is too complicated and the staff is reverting to the old POS. What do you do?

21.You're three days out from a Cash App business account renewal and you find out the customer has been in active demos with a competitor for the past month. No one flagged this to you. How do you approach the next 72 hours?

22.A high-volume Square seller tells you they want to move all their in-person processing to a competitor because they heard Square charges a flat rate and the competitor's interchange-plus pricing will save them money. How do you respond?

23.You manage a mixed portfolio — some Square sellers, some Cash App business accounts. Leadership asks you to push a new Square Banking feature to your entire book this quarter, but half your accounts have no logical use case for it. How do you handle the pressure to hit the activity metric?

24.One of your largest sellers is processing a major seasonal rush — think a retail seller in early December — and they report that Square's reporting dashboard is showing numbers that don't match their own sales records by a meaningful margin. It's 6pm on a Friday. Walk me through how you handle this.

25.Tell me about a time you needed something from a team you had no authority over — an engineering fix, a policy exception, a prioritized ticket. How did you get it?

26.Describe a time you had to deliver bad news to a customer — a feature wasn't coming, a payout was delayed, something they were counting on didn't happen. How did you handle it?

27.Tell me about a time when your read on a customer's situation differed from what sales or account management was telling leadership. How did you handle being the one with the contrary view?

28.You're three months into managing a key account and you realize the original success plan your predecessor built has almost nothing to do with how the customer actually uses the product. How do you reset without losing the customer's confidence?

29.Walk me through a time you had to get a finance or legal team to move faster than they wanted to on something that was blocking a customer. How did you frame the urgency and what did you have to give up to get it done?

30.Tell me about a time you had to align multiple internal teams — say, product, support, and sales — around a single customer issue where each team had a different read on what the problem was and who owned it. How did you drive resolution?