Software Engineer at Angi

How it went

What they would tell you

How to prepare

Round by round

1. 1

   Online Coding Assessment90 min

   This assessment was a mix of classic data structures and algorithms along with some real-world simulation problems. It really tested my understanding of recursion, heaps, and queue management, while also connecting to practical system design concepts like rate limiting. Here’s a quick overview of the problems and how I approached them:

   • Clone a Nested Object with Circular References: I used recursion paired with a hashmap to keep track of visited nodes, which helped avoid infinite loops.
   • Optimize Task Scheduling with Cooling Intervals: I applied a greedy algorithm combined with a max heap to schedule tasks in a way that minimizes idle time.
   • API Throttling Simulation: For this, I modeled request throttling using queues and timestamp tracking to enforce rate limits effectively. Overall, it was a challenging round that blended theory and practical system design concepts.
2. 2

   Core DSA+Problem Solving90 min

   This round was an engaging session with a senior engineer, focusing on some tricky data structure problems and practical object-oriented and functional programming concepts, mainly in JavaScript and Java. One of the main problems was merging K sorted lists. I explained how I’d use a min heap to efficiently merge all the lists, cutting down the time complexity. Then, I was asked to implement a custom event emitter class. I designed it with the standard methods - on, off, & emit and made sure to handle edge cases like multiple listeners and deregistering events. There was also a follow-up on race conditions. We discussed practical ways to handle them, like using mutexes, async promises, and transaction management to keep things consistent. It was a good mix of coding and design, with plenty of back-and-forth to clarify ideas.

3. 3

   System Design60 min

   I was asked to design a review system for service professionals. We covered data modeling for pros, customers, and reviews, caching strategies using Redis, real-time moderation workflows, and scaling for traffic spikes like Black Friday. The discussion also touched on Kafka for streaming reviews and Elasticsearch for fast querying.

4. 4

   Live Debugging + Scenario60 min

   Presented with a buggy API service suffering under load, I first carefully read and summarized the problem out loud. Tasks included fixing pagination bugs, ensuring cache invalidation worked properly, and adding robust async logging and error handling. Interviewers encouraged a scoped, thoughtful approach rather than over-engineering fixes.

5. 5

   Hiring Manager + Behavioral Round60 min

   The lead engineer took time to explore my experience mentoring others, how I handle scope creep from product managers, and how I manage tight deadlines when systems are unstable. I shared real examples and structured my stories to clearly show how I approach these challenges and what I’ve learned from them. Later, we had a more relaxed chat about why I want to join Angi, my career goals, and how ready I feel to take on leadership roles. We also talked about practical things like salary expectations and preferred work location. Throughout, I made sure to show my genuine excitement about working on scaling systems and improving the developer experience.

What came up