BitGo (Developer) interview experience

Summary

I went through a 7‑round interview process at BitGo for a Developer position, and I received an offer of 35 LPA.

BitGo 3 years of experience, Tier 1, Process took around 3–4 weeks. Saw my profile through Instahyre

7 rounds

Online Assessment
- 2 DSA questions + 1-min video explanation for each
- Ran out of time on one, submitted partial explanation after multiple attempts
DSA Round 1
- Linked List (Medium) - don't remember the exact question
- Follow-up: optimize to O(1) space
DSA Round 2
- LRU Cache
- Got a bit lucky here since I had revised it recently
HLD
- Design a Wallet System
- This one is not present in HelloInterview catalogue
- Heavy on calculations + edge cases
- Made a few mistakes, but interviewer was helpful and nudged in the right direction
HM Round
- Deep dive into past work
- Curveball: eventual consistency between DB and Kafka Didn’t land the exact answer (CDC), but explored multiple approaches
Behavioral Round
- Conflict resolution, team scenarios (30 mins)
HR Round
- Offer discussion + negotiation

This was one of the longest process I went through.

Current compensation: 8 LPA fixed + 4 variable Offer: 35 LPA (fixed + variable + ESOPs) | Location: Bangalore

Other offers:

01
Implement LRU Cache
Data Structures & Algorithms
Design and implement an LRU (Least Recently Used) cache that supports the following operations in O(1) time:
- get(key): Return the value of the key if it exists in the cache; otherwise, return -1.
- put(key, value): Insert or update the value of the key. When the cache reaches its capacity, it should invalidate the least recently used item before inserting the new item. You need to design the data structures and algorithms to achieve the required time complexity.
02
Design a Wallet System
System Design
Create a high‑level design for a digital wallet system. The design should cover core components, data flow, calculations (e.g., balances, transaction limits), handling of edge cases (such as concurrency, failure recovery), and integration points with external services like payment gateways and fraud detection. Discuss scalability, security, and consistency considerations.