Quant Developer Internship Jobs in California (NOW HIRING)

We're looking for recent or upcoming PhD and Research Masters graduates to join our 2025 Quantitative Research (QR) Graduate Programme. Our education programme offers a unique insight into the world of quantitative trading by applying research in probability, statistics, stochastic optimisation, numerical analysis, and machine learning, into solving real-world problems.

Working from our European Headquarters in Dublin, you will begin your career by being immersed in our education programme designed to bridge the gap between academic research and real‑world problem solving.

Quantitative Researchers are seated at the heart of our trading floor, communicating regularly with traders seeking their insight, and connecting ideas with other quants and the technology team. Through our education programme and exposure on our trading floor, you will be equipped to dive deep into data sets and explore the statistical intricacies within the world of quantitative trading.

• Research Minded: You enjoy diving deep into a question and are interested in exploring the subtleties of the dynamic market conditions. You like building mathematical models to reveal patterns in the vast amount of data and love it when you discover a solution to a difficult problem.
• A Communicator: You enjoy building relationships with those you work closely with. You enjoy sharing ideas, expressing your thoughts, and listening to the views of others. You're not afraid to discuss ideas and work with others to find the optimal solution.
• Analytical & Detail Oriented: You prefer to explore a question with your analytical mind - crafting and fitting a model, drawing conclusions by carefully interpreting the results. You're not afraid to challenge the assumptions of your model.
• Soon-to-be Masters/PhD Grad or Post-doc: You study in the areas of mathematics, physics, engineering, computer science, or econometrics, and available to join the QR Programme in June 2025.

• Education: Our industry leading education programme is designed with the focus of bringing researchers into the world of quantitative trading. We start with the fundamentals of market microstructure, and progress up to financial data analysis, the concepts of market making and opportunity‑seeking strategies, through tailor‑designed projects mentored by experienced members of the team.
• Development: You will get to collaborate with a wide range of people in the classroom and through your project work, allowing you to engage with others that share a similar passion for mathematics, problem‑solving, trading and technology.
• Culture: Our culture allows employees of every level to thrive. We buck the trend in the financial world – the environment is casual, collaborative and we focus on continuous development, no matter how long you've been in Susquehanna.
• Perks: Based in Ireland's Financial Services Centre, in the heart of Dublin's city centre, our employees avail of free onsite catering, a games room, and a large in‑house gym, to name but a few of our favourite perks. We organise weekly social activities throughout the summer for our interns and we'll also provide summer interns, who aren't from Dublin, with accommodation for the duration of the internship.

Susquehanna is an equal opportunity employer, and we are committed to diversity and inclusion throughout our recruitment process. If you need assistance and/or a reasonable accommodation due to a disability during the application or recruitment process, please contact us.

Susquehanna does not accept unsolicited resumes from recruiters or search firms. Any resume or referral submitted in the absence of a signed agreement will become the property of Susquehanna and no fee will be paid.

Please note that applications for this job require an online assessment. This assessment is administered by a third party company, Induslynk Training Services Private Limited (doing business as Mercer | Mettl), registered in India. By clicking through to apply for this job you are giving Susquehanna your consent to have your email address transferred to Mercer | Mettl by the administrator of our careers platform. Mercer | Mettl will then contact you directly in order to administer the assessment. The results of your assessment will be shared with Susquehanna for the purposes set out and in accordance with Susquehanna's Privacy Policy: https://sig.com/about/privacy-policy/. Mercer |Mettl's Privacy Policy can be found here: https://mettl.com/en/privacy-policy/.