I applied online. The process took 1+ week. I interviewed at Lingjun Investment (Shanghai, Shanghai) in Sept 2025
Interview
The first round was an HR interview, where they learned about my educational background and career development plan; the second round was an interview with the team leader, which mainly focused on my past internship experiences and the details of what I accomplished; the third round was a technical interview, which was divided into two parts: IT and math.
Interview questions [1]
Question 1
What is topological sorting? Given a connection order constraint (for example, b must appear before c, and e and f must appear before a), output a feasible sequence of events; Then, identify all possible sequences
No technical questions. All about previous work experience and some details on what have been done. Interviewer dug very deeply on related works for about one hour. Not a hard one but no further progress with no reason.
I applied through an employee referral. The process took 1 week. I interviewed at Lingjun Investment (Beijing, Beijing) in Jun 2024
Interview
2 rounds of written exams+1 round of interview
The first round of written test is Quant's unified written test questions
The second round of written test is a project, and factors are calculated based on the given data
Interview questions [1]
Question 1
1. A series of problems in linear regression, such as doubling the number of x values, how will the overall R2 change for the t-value of beta1 after regression?
2. Why are the factors in the interview mathematics and resume, as well as in the project, constructed in this way
