Zepto delivers groceries and essentials in about ten minutes from a network of dark stores. Candidate reports describe compact loops of DSA, a low-level design round that often includes database schema and API design, and a hiring manager conversation. This page covers what Zepto builds and who it hires, the process candidates commonly report, the technical depth the teams care about, representative problem types, what interviewers score, and a three-week prep plan.
What Zepto builds and who it hires
Zepto's engineers build the consumer app, the software that runs dark stores and picking, delivery routing, inventory and pricing. Zepto's co-founder has said it chose AWS from the start, and a MongoDB case study reports a 40 percent latency reduction after Zepto moved to MongoDB Atlas. Job listings mention Go among other languages.
- SDE-1 and SDE-2: back-end services.
- SDE-3 and above: design-heavy loops with concurrency.
- Front-end engineers: web apps with their own machine coding round.
- Mobile engineers: the consumer and store apps.
What the process tends to look like
| Stage | What happens | How to prepare |
|---|---|---|
| Recruiter call or referral | Role, level (SDE-1, SDE-2 or SDE-3), team and timeline | Know the product, the team and your own résumé in detail |
| DSA | One or two coding rounds with medium problems | Arrays, graphs, heaps and binary search |
| LLD, DB schema and APIs | Classes, tables and endpoints for a system, sometimes with HLD | Practice full write-ups: requirements, classes, schema, APIs |
| Hiring manager | Projects, pace and ownership | Stories about shipping fast and fixing what broke |
| HR | Offer, level and logistics | Know your expectations |
Processes differ by team, level and office and change over time, so treat this as the common shape candidates report and confirm the specifics with your recruiter.
DSA, LLD and quick-commerce systems
LLD with schema and APIs. Recent reports describe a round combining low-level design, database schema and API design. SDE-3 candidates were asked to cover functional and non-functional requirements, classes, schema, APIs and design patterns, with probing on concurrency and locking.
Quick-commerce constraints. A ten-minute promise changes design. Inventory must be accurate per store, an item can sell out between browse and checkout, and picking routes inside a store matter as much as the ride.
Front-end machine coding. Front-end candidates report building a custom table in vanilla JavaScript and implementing Promise.all and debounce from scratch.
Representative problem types
These are the kinds of problems candidates describe, not a leaked question list. Practice the category, not the exact question.
- Design inventory for many dark stores with real-time stock.
- Reserve items at checkout and release them on timeout.
- Design the database schema and APIs for a ride-hailing or fantasy-sports app.
- Design an e-book reader or a tic-tac-toe game in LLD.
- Assign orders to riders by distance and load.
- Front end: implement debounce and Promise.all.
- Medium graph and heap problems.
What interviewers score
- Working code: a solution that runs, handles edge cases and is readable by the next engineer.
- Practical judgment: the trade-offs you name and the simplest design that meets the requirement.
- Product sense: understanding who the user is and what failure looks like for them.
- Ownership: examples where you shipped, measured and fixed things yourself.
The behavioral side
Technical rounds decide most outcomes, but every Zepto loop also asks about how you work. Prepare a short story for each of these, with a result and what you learned:
- Something you shipped end to end. Cover the user problem, your decisions, what you measured and what you would change.
- A disagreement with a teammate. Show how you made the decision on evidence and kept the relationship.
- Why this company? Connect its product and engineering problems to the work you want to do next.
Structures and sample answers for the common questions are in our software engineer behavioral answers guide.
A three-week prep plan
- Week 1: practical coding: build small features against an API, parse and transform data, and write tests, in the language you will interview in.
- Week 2: system design for the company's domain, plus two behavioral stories about shipping and fixing something under pressure.
- Week 3: timed mixed problems, a mock interview every other day, and research into the product and its engineering blog.
For practice lists, use LeetCode company-tagged questions, the Striver A2Z sheet or the Love Babbar 450 sheet, and if your drive starts with a test, read our guide to new-grad online assessments.
Where CoPilot Interview fits
Most of a Zepto loop is spoken: you explain an approach, defend a trade-off and talk through your past work. CoPilot Interview is an AI interview assistant whose free AI mock interview builds technical and behavioral questions from your résumé and the job description, reads them aloud and scores each spoken answer out of ten, so you can rehearse the explanation as well as the code. The free plan gives 15 minutes a day of live help in sessions of up to 15 minutes, with AI mock interviews included. Online assessments and many coding rounds forbid outside help, so practice beforehand and follow your employer's rules on the day.
Disclosure: CoPilot Interview is our product, so weigh what we say about it accordingly.
Frequently asked questions
What programming language should I use in a Zepto interview?
Use your strongest language for DSA; back-end postings mention Go, and front-end roles use JavaScript or TypeScript.
Does Zepto send an online assessment?
Candidates more often describe a recruiter call followed by DSA and design rounds than a separate online assessment; campus drives may include one. Confirm with your recruiter.
Does Zepto have a machine coding round?
For front-end roles, candidates report a separate machine coding round in JavaScript. Back-end candidates more often describe an LLD round with database schema and API design, sometimes with code. Ask your recruiter which version your role uses.
How should I prepare for Zepto coding questions?
Practice practical problems under time limits, build small features against an API in your interview language, and prepare one system design in Zepto's domain. Explain every solution out loud, because follow-up questions about trade-offs matter as much as the first answer.
Can I use AI tools in a Zepto interview?
Only if the instructions you receive say so. Online assessments and live coding rounds generally forbid outside help, and some companies now state their AI policy in the invitation. Use AI to practice beforehand, and follow your employer's rules.
Practice this interview before the real one
The AI mock interview builds questions from your resume and the job description, reads them aloud and scores each spoken answer out of 10. Included on the free plan.
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