Senior Quantitative Researcher

Apex Fintech Solutions•New Jersey, NJ

6d•$138,278 - $175,000•Hybrid

About The Position

Apex Fintech Solutions (Apex) powers innovation and the future of digital wealth management by building tech-forward solutions that help simplify, automate, and facilitate access to financial markets for all. Our robust suite of fintech software enables us to support clients such as Stash, Betterment, SoFi, Webull, and eToro, amongst many others; collectively, Apex powers access to the stock market for over 22+ million end customers. At Apex, we are changing how the securities industry operates by reinventing the status quo, which was manual, slow, and accessible only by the ultra-wealthy. We're digitizing and democratizing systems so that everyone has an opportunity to invest. When you're at Apex, you drive this change. You're part of a global team with a clear vision: to be the trusted technology that powers the digital economy. Our offices in Austin, Dallas, Chicago, New York, Portland, Belfast, and Manila are home to over 1,000 employees. Together, we’re shaping the future of financial innovation. Embrace change. Solve big. Win together. And be G.R.E.A.T. — grit, results, empathy, accountability, and teamwork — with Apex. We’re proud to be recognized for the innovative work we do, the purpose-driven nature of our work, and the collaborative culture we’ve created. Here are just a few of the many awards we’ve recently received: Best Places to Work 2026, 2025, 2024, 2023 - Presented by BuiltIn, WealthTech of the Year 2025 - Presented by US FinTech Awards, The World’s Top 250 Fintech Companies 2024 - Presented by CNBC.

Requirements

Master’s degree or foreign equivalent in Mathematics, Finance or a related field
two (2) years of post-baccalaureate experience as a Quantitative Researcher or in a related position.
Statistical inference, time-series econometrics
Data/ML libraries, including NumPy, pandas, SciPy, statsmodels, and scikit-learn
knowledge of portfolio theory
experience with data visualization using JupyterLab.

Responsibilities

Lead the design, development, and implementation of advanced quantitative models and algorithms to support trading strategies across various asset classes.
Analyze large and complex datasets to identify patterns, trends, and opportunities for alpha generation.
Conduct thorough testing and validation of quantitative models to ensure accuracy, robustness, and reliability under various market conditions.
Collaborate with risk management teams to assess and mitigate risks associated with quantitative models and trading strategies.
Work closely with technology teams to integrate quantitative models into trading systems and platforms, ensuring seamless execution and performance.
Provide guidance and mentorship to junior researchers and collaborate effectively with cross-functional teams, including traders, developers, and risk managers.
Position supervises 1 Junior Quantitative Researcher.