I had a chance to interview with WriteSonic for Full Stack Developer Role.

A third party agency reached out to me informing that your profile seems impressive and they are sending it to WriteSonic for screening. Within 3 days, I got a call that I have been shortlisted and asked the availability for interview.

Round 1: Technical Round

• Find output of given JS code. Tested knowledge of promise, event loop and callback queue.
• Find output of given react code. Tested knowledge of batching.
• What is Event loop
• Difference between concurrency and parallelism.
• What is virtual dom and why its used.
• ACID properties
• AWS RDS benefits
• Why choose next.js Framework
• Microservices and Monolithic advantages and disadvantages

Round 2: Frontend Coding Round

• Given a problem statement, Asked to code the basic frontend (No CSS) with proper functionality. Code should be modular, clean and working. Modified it according to the Follow-ups.

Round 3: Design Round

• Asked to design a flow when user uploads any document in chatgpt and receives the response in text format. Gave a High level design about the services involved, Rate-limiter, load balancing, database, storage, cache, messaging queue etc. After that, we dived deep into the functionalities of each services, limitations, failure handling, extensibility etc.
  There were some limitations that a user can't upload more than 10k documents, user after uploading 1 document, cannot upload before a certain interval.

Round 4: Technical Discussion - Open ended

• This was sort of a technical discussion. Given 1000 unlinked blogs, Design a flow or algorithm to perform internal linking among those blogs efficiently. Had a good discussion regarding the functions required, data structure, ML algorithm to extract anchor tags, score computation etc. At the end, told to design postgres db schema for the same.

Result - Final round feedback was not positive. Overall, it was a great learning experience.