I applied through an employee referral. I interviewed at Freecharge Payments Technologies Pvt Ltd in Dec 2019
Interview
1. Tech Discussion - Basic DS algo, NodeJs(Basic concepts), Databases(Time series DB, Columnar databases etc), Networks, Encryption algorithms.
2. With VP Engineering - Project related and Behavioural
3. HR Round - Communication skills, Salary Negotiation.
Interview questions [1]
Question 1
1. Question related to Array and Graphs.
2. Public Key Encryption Vs Private Key Encryption.
3. How NodeJs works.
4. How will you scale an existing NodeJs application to one trillion requests/minute.
5. System Design - UBER
6. Token Mechanism and replacement.
7. Hashing Vs Encryption Vs Encoding
8. No of IPs in range 192.168.0.1/24
