Applied via the website. Went through multiple phone interviews. Took a test and was asked to come into the office for an all day interview.
Mutually decided it was a bad fit. The processes they use at ICE are antiquated. They are aware they do not use modern practices, such as having an entire company division dedicated to manually testing only. They could not describe any particular industry best practices they use, such as code reviews and unit testing. They are severely risk adverse due to the nature of their business and it stifles innovation, and growth.
They are certainly one of the few companies that have this particular problem space, so it makes many of the positions and the work they do rather unique, which can be a good or bad thing depending on the person who wants to work at ICE.
Interview questions [1]
Question 1
What are some ways to deal with thread contention?
I applied online. I interviewed at Intercontinental Exchange in Mar 2026
Interview
They have a three to four step interview process. First starts with a general phone call, and then HackeRank test , followed by F2F interview. Hackerrank test duration was for 1.5 hrs with 2 coding questions and 9 MCQ's on java basics.
I applied through a recruiter. I interviewed at Intercontinental Exchange (Atlanta, GA) in Oct 2025
Interview
I interviewed for a Java Backend Developer position in October 2025. The process consisted of a single, very technical round focused heavily on algorithms, Java coding, and backend security concepts. The interviewer asked me to implement programs using collections and common algorithms, then explain performance and how to harden the code with proper validation and security best practices. The difficulty was high, and they clearly expect very strong hands‑on experience with Java and secure backend design. The interviewer was professional and direct, but the pace was fast, so you need to be comfortable thinking aloud while coding. I was not selected, but the experience gave me a clear idea of their expectations and helped me understand how seriously they treat technical depth and security.
Interview questions [1]
Question 1
Implement an LRU cache in Java and explain why you chose that data structure.
I applied online. I interviewed at Intercontinental Exchange (Atlanta, GA) in Sep 2025
Interview
Total 6 Rounds: Span of 1 month and 20 days
1. Recruter round -20 mins
2. technical Interview Coding 1.5 hour
3. Technical Interview Coding : 1.5 hour
4. Onsite Interview : Senior Solutions Architect-45 Mins
5. Onsite Interview : Principal Engineer-45 mins
6.Onsite Interview : Senior Director -30 mins
Interview questions [1]
Question 1
Mainly Techinal Questions. Some based on resume and expericence, Data model and architecture based questions. Live coding .