I just took a student to get Meta OA 4 questions full AC! The amount of questions this time is 4 questions, the overall difficulty is medium to high, mainly examining logic, arrays and various simulation...

Recently many students have received OA invitations from MathWorks (parent company of MATLAB). Just finished this test, and overall it gave me...

OA's for IBM Data Scientist positions are opening up again this year. This time one of our Programhelp ...

Akuna's 2026 OA has recently been sent out, especially for QR, SDE, and MLE, and almost every student has...

Goldman Sachs OA has always been a bit "off the beaten path". Unlike other financial firms that favor mathematical derivation or SQL case...

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...

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...

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

This time, I'll share the entire process of my interview at Virtu Financial, from the easy OA to the math-filled Final....