I applied for Dunzo through their careers page. Invited for OA after 2 days.Here is a brief interview experience(template borrowed from another interview experience post):

Coding Assessment on HackerRank: This was a 75 minute test with 3 questions divided into 2 modules. Module 1 has two coding questions and Module 2 was a backend question (hit API and submit result after a few manipulations). Not able to do API question, but was able to complete both the coding questions with all the test cases passed.

--3 days later--

Take home assignment: I was asked to come up with a low level design of Coffee Machine. The requirements were shared via PDF file and around 2 days over a weekend were given to submit the working code.

-- 5 days later(all interviews on the same day on a Saturday)--

DSA(60 mins) : This round had two questions.
a. Leetcode medium trees question
b. Leetcode medium DP question(eventually boils down to LIS).

LLD(60-70 mins) : Was asked to design offer/discount service.More emphasis was on DB schema design. The interviewer was not expecting me to write code, but I was asked to come up with API contracts and was asked about the design patterns i would potentially be using while writing code.Also,briefly asked about my current project and its design(towards the end, though).

HLD(45 mins,with one of the co-founders): Was asked to design a very famous and generic system(can easily find out in ed****.io website).More focus is on end to end request flow, scalabilty and system optimization.Again, was asked to speak about my current project in detail and its design and questions related to why we chose specific technologies.

--Couple of days later--
HR(30 mins) : typical HR interview with questions like, Why dunzo, why do you want to leave your current org.

--Couple of days later--
Got an email with the offer
Comp : https://leetcode.com/discuss/compensation/1393223/dunzo-se-2-backend-banglore/1042077