Me postulé en línea. El proceso tomó 1 semana. Acudí a una entrevista en Two Sigma (New York, NY) en oct 2023
Entrevista
Just finished the OA. there were 3 questions, last one un-scored. The first question was about linear interpolators, the second about data analysis which involves fitting linear regressions. The third was an extension of the second and essentially asked you to approximate a large number of linear regressions.
Preguntas de entrevista [1]
Pregunta 1
Q: given an array of 2d points and an x-input query, return the corresponding y using linear interpolations.
Discuss in an hour on how to predict house price starting with a initial dataset. Back and forth as the discussion go deeper. Discussed model choices, variable selection, and model validation, etc.
Preguntas de entrevista [1]
Pregunta 1
predict house price starting with a initial dataset
Me postulé en línea. Acudí a una entrevista en Two Sigma
Entrevista
OA: Three coding questions (Linear Interpolator, Linear regression of daily temperature by town, Efficient fitting of linear regression)
3 Technical Interviews (1 hour each): 1. Data Analysis; 2. Coding and Algorithms; 3. Domain knowledge for Phd or Core Statistics
Final round with 2-3 hiring managers and a senior manager from matched teams: combination of open-ended technical problems and behavioral questions
Purely behavioral round with HR team and a recruiter
Preguntas de entrevista [1]
Pregunta 1
First round technical interview: begin with some questions about stats/probability knowledge, and the core is an open-ended case study
Me postulé en línea. Acudí a una entrevista en Two Sigma
Entrevista
Three Technical:
Data analysis
- Approach to open-ended problem
o Paper, pen
- Ask interviewer if stuck
- Systematic manner:
o Creative ideas
o Technical proficiencies
o What sort of datasets
o What sort of features
o Technical / methodology
o Start with linear model first
- No code
Algorithms
- Hackerrank
o Short, simple and clean code
Core statistics / domain expertise
- Bachelor / Masters – core statistics
o Linear regression
o R^2
o T-stat
o How they are used
o Statistics foundation
- No code
Two more rounds of intern / hiring managers:
- Mainly technical, some behavioral
o Similar to data analysis
o More targeted towards their team
o Come prepared with questions
If well, 30 min technical interview:
- Logistical interview
30 min of senior meeting with Two Sigma:
- Cultural fit
o Behavioral mainly
o Maybe 1 technical
Team match in the spring for more accurate project matching
Tested on foundational knowledge