WorldQuant Quantitative Researcher interview questions

HR screening, 2 online tests (maths and programming) 3+2 hours limit (university level maths and three quite simple coding tasks, but the tests were awful: wrong assertions and pretty strange score evaluation - be ready to fail the tests with correct code), then 3 interviews (maths, coding and data science) then another 3 interviews (did not succeed)

interviewed by the business development, discussed about the current working experience, team introduction, interview process and skills required. Then arrange a test in their office, The test is about math and programming.