Jane Street is a quantitative trading firm with offices worldwide. We hire smart, humble people who love to solve problems, build systems, and test theories. You’ll learn something new every day in our office—whether it’s connecting with a colleague to share perspectives, or participating in a talk, class, or game night. Our success is driven by our people and we never stop improving.

Find out more about our open roles and apply here. Like puzzles? So do we! Every month or two, we’ll post a new puzzle to this page. If you think you’ve solved a puzzle, submit your solution!

Hudson River Trading (HRT) is where cutting-edge technology meets world-class trading. Founded in 2002 by computer scientists and mathematicians who believed that math and technology would transform financial markets, today we have built one of the world’s foremost computing environments for research and development where global experts across disciplines work together to solve the most complex problems in trading.

Our mission is simple: hire the brightest minds, empower them with the tools and freedom to excel, and create an environment where they can do their best work together.

Whether your expertise lies in math, computer science, physics, or beyond, we welcome deep thinkers from a range of backgrounds. If you’re interested in building the future of trading, we’d love to hear from you — check out our open roles or learn more about us on our website.

Silares (SLRS) is a quantitative trading and research firm based in SoHo.

We build ultra-low-latency systems for global markets and artificial intelligence. Our highly technical team believes in treating complex systems as intellectual disciplines, something that can be studied, refined, and innovated upon.

We’re a small team built on collaboration and meritocracy. We avoid the bureaucracy inherent in larger firms and labs, executing ideas directly into production where the best ideas win and the people who build them share in the returns.

Company website: www.silares.com

Pinely is a dynamic algorithmic trading firm, privately owned & funded, with a presence in Singapore, the Netherlands, and Cyprus. We specialize in high-frequency and ultra-low latency trading, striving to be among the top trading companies worldwide.

Our team tackles everyday challenges like developing trading strategies, optimizing systems for minimal latency, saving and processing large volumes of historical data. Our flat structure and collaborative environment make everyone feel heard and cultivate a culture fueled by ideas and a love for innovation.

We are a team of mathematicians, programmers, engineers, and computer scientists, united by a passion for knowledge. Our work demands exceptional C++ coding, algorithmic thinking, and mathematical intuition, attracting top talent, including winners and awardees of such respective challenges as ICPC, IMC, HITB PRO CTF, Google HashCode, etc.

Learn more about us on our website.

To join our team, please send your CV to hr@pinely.com.