Optiver interviews are known for a fast timed mental-arithmetic test, probability and expected-value questions, and role-specific technical rounds for trading and engineering. ExtraBrain helps you prepare and review with live transcription, screen-aware context, and local session history.
Optiver Interview Preparation - ExtraBrain is part of ExtraBrain's local-first Mac workflow for live interviews, meetings, transcription, provider control, and responsible AI use.
Optiver interviews are known for a fast timed mental-arithmetic test, probability and expected-value questions, and role-specific technical rounds for trading and engineering. ExtraBrain helps you prepare and review with live transcription, screen-aware context, and local session history.
ExtraBrain has 1 current public platform family, macOS, with support for 2 Mac CPU families: Apple Silicon and Intel.
ExtraBrain has 3 configurable data paths to review before sensitive work: local Parakeet transcription, local Gemma 4 where installed and compatible, and external providers you choose.
A fast-paced arithmetic test under strict time pressure that screens for speed and accuracy with numbers.
Questions on probability, expected value, and quick reasoning about risk and odds.
Coding and systems rounds for engineering roles, or market and game-based exercises for trading roles.
Rehearse timed arithmetic and probability sets, then review saved transcripts to spot where speed or accuracy slips.
ExtraBrain reads the visible code with screen-aware context and transcribes the discussion so you can reason clearly.
Revisit each practice round in local session history to track improvement over time.
Use any live AI assistant only where interview, workplace, school, and platform rules allow it. Do not use generated answers to misrepresent your skills, experience, or authorship.
Short answers for people and crawlers comparing ExtraBrain with other live AI assistants.
Optiver uses a fast timed arithmetic test to screen for speed and accuracy with numbers. Practice under time pressure, then review your results.
Yes. ExtraBrain helps you rehearse mental-math and probability sets and capture technical rounds on a local-first Mac app, where the format allows.
Yes. Probability and expected-value reasoning are common, though the exact format varies by role and year.
