集微

We are a well-funded, early-stage quantitative hedge fund with AI ambitions. Based in Shanghai, current members include Stanford PhDs, Columbia/Tsinghua/PKU/Fudan masters, International Math Olympiad gold medalists, and veterans from top US hedge funds including Two Sigma, Citadel, and PDT.

我们是一个位于上海的初创对冲基金。现在成员毕业于斯坦福（博士），哥伦比亚／清华／北大／复旦（硕士），有多枚国际奥数金牌，并曾经就职于美国顶级对冲基金（Two Sigma, Citadel, PDT）.

We are looking for two kinds of people to join us:

Highly talented programmers, preferably with experience building robust, large-scale, "big data"-related systems with Java and/or Python.
Math/science wizards, preferably with experience in mathematical modeling, data analytics, and algorithm implementation. Specific skills may include probability, statistics, machine learning, and optimization.

No finance background is necessary. But a passion for programming and/or having fun with mathematics is mandatory. The intellectual challenge will be exciting, and the financial compensation will be competitive. Both full-time and internship opportunities are available. If interested, please solve the following puzzles and email us your resume!

我们邀请以下两类人才加入我们团队：

优秀的软件工程师。优先考虑曾经用Java或Python实现过大规模健壮"大数据"系统的人选。
优秀的数学/科学人才。优先考虑以下人选：精通数学建模，数据分析，算法编程，并具备概率，统计，优化，机器学习等知识。

想加入我们，不需金融背景，但需要对编程和数学充满热爱。我们会给员工提供智力挑战和可观薪酬。全职和实习的机会都有。

If you are a math/science wizard candidate, please solve the following puzzles and email us your resume!

如果你对加入我们的量化建模团队感兴趣，请做出以下题目，并把你的简历发到相应的邮箱！

\((1-m^a)(m^a+m^{\rm\it{2a}}+m^{\rm\it{3a}}+...)=??\)

\(\lim_{t\to t_h}{\sin(t-t_h) \over t-t_h} t = ??\)

Email address/联系方式：????@jiweifund.com

If you are a code poet candidate, please solve some of the following puzzles and email your resume and solution code to the corresponding address!

如果你对加入我们的软件工程团队感兴趣，请做出以下一道或多道题目，并把你的简历和代码发到相应的邮箱！

\(186,647\) is the \(n\)th prime number. What is \(n\)? Email address: \(n\)@jiweifund.com. Here, \(n\) is the solution
\(13,651,973\) is the \(n\)th prime number. What is \(n\)? Email address: \(n\)@jiweifund.com. Here, \(n\) is the solution
\(89,998,849\) is the \(n\)th prime number. What is \(n\)? Email address: \(n\)@jiweifund.com. Here, \(n\) is the solution