I applied online. The process took 4 weeks. I interviewed at IBM (Johannesburg) in Jan 2021
Interview
nitial Screening (Phone/Video - 30 mins): HR asked about my background in programming (focus on Java and Python), why IBM, and basic behavioral questions like "Tell me about a challenging project." No technical coding yet.
Technical Round 1 (Virtual - 45 mins): Coding challenge on a platform like HackerRank – solved problems on data structures (e.g., implementing a binary search tree) and algorithms (sorting arrays efficiently). They emphasized problem-solving approach over perfect code.
Technical Round 2 (Virtual - 1 hour): Deeper dive into system design; I had to outline a scalable microservices architecture for a cloud-based app. Also discussed experience with tools like Docker and Kubernetes.
Interview questions [1]
Question 1
questions on teamwork, handling deadlines, and a case study on troubleshooting a production issue. They asked for examples from past roles.
Applied through the company portal, completed an online coding assessment, followed by a technical interview covering data structures, algorithms, OOP concepts, and project experience. Concluded with an HR discussion about the role, career goals, availability, and compensation expectations.
## IBM Interview Process
The process began with initial resume shortlisting, followed by competitive **DSA and coding rounds** to test core technical concepts. After clearing those, I cleared two comprehensive interviews with the **Hiring Manager/Tech Expert** and **HR**.
Describe the interview process: The process consisted of three rounds: an initial online assessment focusing on data structures and algorithms, followed by two technical video interviews. The technical rounds were intensive, covering system design, live coding, and deep-dive questions into previous project experience and database optimization.
Interview questions [1]
Question 1
Design a scalable URL shortener system and explain how you would handle high read/write throughput.
