Challenges and Triumphs in Technical Interviews: A Software Engineer's Perspective

Technical interviews for software engineers can be a daunting experience, with candidates often faced with challenging questions designed to push their limits. In this article, we explore two such experiences that tested the mettle of a software engineer, focusing on their ability to think critically, solve complex problems, and adapt to pressure.

1. The Convex Hull Algorithm: A Standing Ovation and a Humbling Experience

During one technical interview, the interviewer asked me to write the algorithm for the Convex Hull. This algorithm is a fundamental problem in computational geometry, and it goes beyond just writing the code; it requires a deep understanding of the concepts and the ability to think algorithmically.

Initially, I confessed that I had never tackled this problem before, but the interviewer did not let up, insisting that I should write it as part of the interview. With some perseverance, I managed to come up with a working solution within 30 minutes. To my surprise, the interviewer confirmed that my solution was correct, but then they introduced me to some optimal solutions that have taken years for others to find.

The challenge then became about reaching the optimal solution in the remaining 15 minutes. Although the time was tight, I managed to give it a shot. Unfortunately, it was not enough, and the interviewer decided that I had not reached the optimal solution.

2. Testing a Door Design: Balancing Feasibility and Cost

In another technical interview, the interviewer posed a question related to testing a door design for load-bearing capability. The objective was not just to come up with an idea but to ensure that it was both feasible and cost-effective.

The interviewer was assessing whether the candidate could think critically and balance different factors. They wanted to see whether the candidate had the ability to make decisions that were not only innovative but also practical. The task was to design a test that could withstand the specified load and provide reliable results.

The challenge was to ensure that the test was not only feasible but also the cost-effective and easiest method to implement. The interviewer was looking for candidates who could strike a balance between pushing themselves to innovate and knowing when to settle for a tried-and-true solution.

Lessons Learned

These experiences highlight the importance of several key skills in technical interviews:

Algorithmic Thinking: Being able to solve complex problems like the Convex Hull algorithm demonstrates a solid foundation in algorithmic thinking. Critical Thinking: The ability to think critically and balance different factors, as seen in the door design test, is crucial in any technical role. Adaptability: Being able to adapt to unexpected challenges and time constraints is a valuable skill that can contribute to a candidate's success.

In conclusion, while technical interviews can be challenging, they provide valuable opportunities to showcase skills and adapt to different scenarios. The experiences shared here serve as a reminder that the ability to think critically, balance feasibility and cost, and adapt to unexpected challenges are invaluable in the world of software engineering.