Two Sigma's Quant Researcher (QR) position has long been known as one of the "IQ Ceiling" positions...

If you're preparing for an interview for a big systems design job, Reddit is definitely one of your "must-browse" companies. As a globally recognized social news aggregator, R...

I recently passed a technical interview with a Data Scientist at Quora, and it really kind of refreshed my understanding of AB Testing....

Recently, I just finished Confluent's OA, and the overall feeling is slightly harder than expected, belonging to the kind that looks simple, but with a lot of details and boundaries that are easy to error...

JPMorgan's OA has been the focus of many preparations for FinTech posts (FinTech / Quant / Data / SDE...

Statsig is a small startup in Bellevue, but many of the founding team are ex-Meta...

This time, Meta's OA is a remote format with four questions, and the platform interface is clean and smooth. Throughout the process, the style of the questions favored basic logic and data structures, no...

Many people say that NVIDIA's interviews are "rollicking and hardcore", which I didn't believe before. I didn't believe it until I personally experienced a round of interviews - I can really say that it was "so hard that I was skeptical"...

Many students prepare for the Capital One SDA (Strategy & Data Analyst) interview...

Recently, many students are preparing for Roblox OA 2026. Here is a classmate’s latest Roblox OA review, covering two...