OpenAI interview notes, page 46 of 67

“I went straight to a linear scan approach, tracking each credit batch with its expiry and remaining balance.” The rest of the author's notes on Software Engineer interview at OpenAI, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The no-loops constraint is where people trip up.” The rest of the author's notes on Machine Learning Engineer interview at OpenAI, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I jumped straight to a min-heap keyed on expiry and it felt clean until they asked about balance queries.” The rest of the author's notes on Software Engineer interview at OpenAI, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The immune cell addition sounds minor but it actually changes how you think about termination conditions.” The rest of the author's notes on Machine Learning Engineer interview at OpenAI, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This question is basically five questions stitched together and I did not handle that well.” The rest of the author's notes on Software Engineer interview at OpenAI, Onsite - Behavioral / Leadership round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I went straight to brainstorming use cases and kind of skipped the 'who is this actually for' step, which I regret.” The rest of the author's notes on Product Manager interview at OpenAI, Onsite - Product Sense / Strategy round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This one is more stressful than it sounds.” The rest of the author's notes on Software Engineer interview at OpenAI, Onsite - Behavioral / Leadership round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“60 minutes on this and I still felt like I barely scratched the surface.” The rest of the author's notes on Software Engineer interview at OpenAI, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Went in thinking I'd cover the basics and move on but they kept pushing on scale, delivery guarantees, and how you handle things like rate limiting per user or per channel.” The rest of the author's notes on Software Engineer interview at OpenAI, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This is where I spent most of the time and also where I fumbled most visibly.” The rest of the author's notes on Software Engineer interview at OpenAI, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.