Senior Software Engineer - Frontend | Impact Analytics

Round 1 — Online Assessment (OA)

3 questions:

• A Redux + Redux Thunk based React application boilerplate was given and I needed to fill out all the functions.
• Had to add HTML, CSS and JS to generate TSA, Total Volume, etc. for a cuboid. There were a list of instructions regarding the HTML, CSS and JS structure, and we needed to add functions to calculate the TSA and TV.
• A HTML, CSS, JS based form (don't recall the exact details).

Round 2 — JS/React Technical Interview (R1)

Was asked everything under the sun, a lot of HTML, CSS, JS, React and Git based questions. Some that I recall:

• How would you set up a new app if you know that it is data heavy? (web workers expected here)
• Debounce vs Throttle, and real-world examples for each
• How to rename an old commit
• Difference between rebase and merge
• Implement object flatten
• Explain currying and implement it
• What is JS implicit type coercion and what do these evaluate to:
  • 1 + "1"
  • 1 - "1"
  • 1 - - "1"
• Internal working of Redux
• Difference between normal function and arrow function
• Explain the Event Loop and Execution Context
• What is CORS?
• Explain code splitting
• What is memoisation?
• What is batching in React?
• How do you update a parent from a child in React?

Round 3 — Component Design Round (R2, Onsite)

The recruiter mentioned it was going to be a System Design round but it turned out to be a component design round. The questions I recall are:

• How would you rate yourself in HTML and CSS?
• What are some new additions in HTML5?
• Center a box without touching the HTML, it was a single div in the HTML, CSS only.
• Design a Nested Dropdown Menu similar to https://www.radix-ui.com/primitives/docs/components/dropdown-menu

A Few Things To Note

• There was no proper recruiter call. Multiple recruiters were reaching out at different stages with no clear ownership of the process.
• The scope of the role and the team (component building team) were never communicated during the process, I found out from the interviewers themselves in the final round. Three rounds in.
• None of the previous interview rounds were relevant to the actual role.
• I had to fly to Bangalore for the final round at my own expense. No reimbursement.
• The interviewers were 15 minutes late to what ended up being a 30 minute interview.

If a company can't reimburse the candidate for travel, they need to just take the interview online. Flying out for a 30 minute interview that started 15 minutes late was a genuine waste of time and effort.