The Voleon Group Online Assessment
Voleon is a Berkeley-based ML/systematic asset manager; hiring is academic (statistics & ML a stats/DS PhD knows cold). The OA is coding/take-home: a flagship exchange-sim coding challenge, sub-grid and string problems, and a data-analyst SQL + pandas task. Research interviews go deep on stats and ML.
Engineering / Research — Coding OA / take-home
The coding OA mixes a custom exchange/execution sim (trailing-minute volume, participation-rate execution) with classic problems (largest bounded sub-grid, group anagrams, file parsing, an increment-stack). Auto-graded below.
- Group Anagrams Coding · easy
- File I/O: Count Quantities From an Input File Coding · easy
- Berkeley Exchange: Trailing-Minute Volume Tracker Coding · medium
- Largest Square Subgrid With Every Block Under a Budget Coding · medium
- Design a SuperStack With a Bulk-Increment Operation Coding · medium
Data Scientist / Analyst — Data Analyst OA (SQL + pandas)
The Data Analyst OA is 4 SQL + 1 pandas aggregation (high bar). The pandas aggregation/filter task is auto-graded below.
- Pandas Aggregation and Filtering Coding · medium
The Voleon Group OA — FAQ
What is the The Voleon Group online assessment?
Voleon is a Berkeley-based ML/systematic asset manager; hiring is academic (statistics & ML a stats/DS PhD knows cold). The OA is coding/take-home: a flagship exchange-sim coding challenge, sub-grid and string problems, and a data-analyst SQL + pandas task. Research interviews go deep on stats and ML.
What is the format of the The Voleon Group OA?
It runs as 2 tracks (Coding OA / take-home, Data Analyst OA (SQL + pandas)). Engineering / Research, Data Scientist / Analyst — each timed, auto-graded where applicable.
How do I practice for the The Voleon Group online assessment?
Work the sample questions above (each with a full worked solution), then take the interactive The Voleon Group OA practice on QuantVault. For the full interview, see the The Voleon Group interview-questions set.