Fullstack Developer

A train travels 120 km at a speed of 60 km/h and returns at 40 km/h.
What is the average speed of the train for the entire journey?

Create a simple REST API using Express.js or Go (net/http) to manage users.

You are given a table Employees (emp_id, name, department, salary) — write an SQL query to find the second-highest salary in each department.

Explain the difference between a process and a thread with a real-world example.

One question was about handling multiple incoming API requests at once. They asked something like: How would you manage concurrent API calls efficiently — maybe using async or goroutines — and handle rate limiting or errors?

If the backend updates data, how can you make sure the frontend (for example, in React) reflects the change in real time? They were expecting ideas like WebSockets, live data updates, or API polling.

Given a large table of patient records, how would you efficiently fetch the latest diagnosis for each patient?

How would you design tables for doctors, patients, appointments, and reports?

Since you’ll be handling medical data, how would you secure your APIs and database?

• Tell us about a time when you faced a major technical challenge while working on a project. How did you handle it, and what did you learn from it?
• What’s one technical weakness you’ve identified in yourself, and what steps are you currently taking to improve it? (In this case, mainly referring to your weak area in Go (net/http) that led to the rejection.)
• Do you think your current skill set is strong enough to handle backend responsibilities independently, especially with Go (net/http)?