Education: B.Tech in Computer Science
Years of Experience: 3+ years
Prior Experience: Product based company
Location: Bangalore, India

Recruiter contacted me on LinkedIn.

Round 1 - Frontend Technical Round [1 hr]

This round was more of screening round and was generally around the concepts of javascript.

• Two output based problems were asked revolving around concepts like var, let & const keyword, closures & promises.
• Implement the _get function of lodash.
• Implement Promise.all() polyfill.

This round went well and I was successfully able to answer all the problem.
Got a call on the same day for scheduling the next round as I cleared this round.

Round 1 - Machine Coding Round [1 hr]

This was a frontend coding round in which I was given a problem to make a UI from scratch. I was given a https://coderpad.io/ link to work.

• Implement a memory game, that has a fixed number of blocks. Ex: 5 (programmatically configurable)
• Start the game on click of START button.
• Start blinking the blocks one after the other, starting from the count of 1. (single blink)
• The blinking of blocks must be completely random and the same block may blink twice in sequence.
• Let the user click the blocks in the same order of appearance.
• If user clicks are accurate, continue to the next level with the increased count.
• Else shake the container to indicate the wrong click and start over.
• Maintain the current score and highscore of the game.
• Store the High Score in Local Storage to persist over refresh.

My solution: https://codesandbox.io/p/sandbox/47gdz6?file=%2Fsrc%2Fcomponents%2FGame.tsx%3A18%2C53

• The interviewer was very helpful, corrected me at times I was going in the wrong direction.
• For the same index to bling back-to-back , I couldn't come up with the blinging properly.

Round 3 - HM [1 hr]

This round was to know the behavioural aspects of my work experience.

Discussion on few projects, contribution, ownership on those projects
Roles and responsibilities in the current company
Few technical problem were asked like If you need to build a product from scratch which tech stacks you would use. Performance improvment of a web app.

Round 4 - LLD [1 hr]

This was a LLD round from frontend perpective. I was given to design a mini game(Minesweeper).
I was asked to work on these few features:

• Two Modes: Easy and Hard
• High Score check
• Filling algorithm
• Bomb check algorithm
• Block data filling for non-bomb squares.

The things which was checked in this round were mainly around:

• What states will be kept?
• What Hooks will I create?
• WHat methods will I create?
• What components will be made?
• How data will flow and how it would be modelled?
• What logic will be written and things will be handled in each component etc.

I explained the design using the RADIO Framework.
This round took place in a whiteboard where I had to explain all the things to the interviewer.

Verdict: Rejected

Feedback: They wanted a web developer whereas most of my experience lies in the mobile development role.