Senior Quantitative Researcher

Apex Fintech Solutions LLC; United States; On-site; USD 138,000 - 175,000; Full time

Benefits offered by this job

Healthcare benefits

401k match

Parental leave

HSA contribution match

Tuition reimbursement

Hybrid work schedule

Job summary

Apex Fintech Solutions is seeking a Senior Quantitative Researcher in Bridgewater, NJ, to design and implement advanced models for trading across asset classes.

You will analyze large datasets, validate models under varied market conditions, and collaborate with risk and tech teams to ensure robust performance. You will mentor a Junior Quantitative Researcher and contribute to portfolio strategy.

Qualifications

• Master’s degree or foreign equivalent in Mathematics, Finance or a related field.
• Two years of post-baccalaureate experience as a Quantitative Researcher or related position.
• Experience with statistical inference and time-series econometrics.
• 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 asset classes.
• Analyze large datasets to identify patterns, trends, and opportunities for alpha generation.
• Thorough testing and validation of models to ensure accuracy, robustness, and reliability under various market conditions.
• Collaborate with risk management to assess and mitigate model and trading risks.
• Work with technology teams to integrate models into trading systems and platforms.
• Provide guidance and mentorship to junior researchers and collaborate with traders, developers, and risk managers.
• Position supervises 1 Junior Quantitative Researcher.

Skills

Statistical inference

Time-series econometrics

NumPy/Pandas/SciPy

scikit-learn

Data visualization (JupyterLab)

Education

Master’s degree in Mathematics or Finance

Tools

NumPy

pandas

SciPy

statsmodels

scikit-learn

Job description

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

ABOUT THIS ROLE

Position : Position: Senior Quantitative Researcher

Location : 100 Somerset Corp. Blvd., 2nd Floor, Bridgewater, NJ 08807

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.

Educ./experience: Master’s degree or foreign equivalent in Mathematics, Finance or a related field, plus two (2) years of post-baccalaureate experience as a Quantitative Researcher or in a related position. Experience must include: Statistical inference, time-series econometrics; Data/ML libraries, including NumPy, pandas, SciPy, statsmodels, and scikit-learn; knowledge of portfolio theory; and experience with data visualization using JupyterLab. Position supervises 1 Junior Quantitative Researcher.

Salary range : $138,278 - $175,000/year

_Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties, or responsibilities required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice._

Our Rewards

We offer a robust package of employee perks and benefits, including healthcare benefits (medical, dental and vision, EAP), competitive PTO, 401k match, parental leave, and HSA contribution match. We also provide our employees with a paid subscription to the Calm app and offer generous external learning and tuition reimbursement benefits. At AFS, we offer a hybrid work schedule for most roles that allows employees to have the flexibility of working from home and one of our primary offices.

EEO Statement

Apex Fintech Solutions is an equal opportunity employer that does not discriminate on the basis of race, color, religion, sex (including pregnancy, sexual orientation, and gender identity), national origin, age, disability, veteran status, marital status, or any other protected characteristic. Our hiring practices ensure that all qualified applicants receive fair consideration without regard to these characteristics.

Disability Statement

Apex Fintech Solutions is committed to creating an inclusive and accessible workplace for all candidates, including those with disabilities. We are dedicated to ensuring equal employment opportunities and providing reasonable accommodations to qualified individuals with disabilities. If you require reasonable accommodations to participate in the application or interview process, please submit your request via the Candidate Accommodation Requests Form . We will work with you to provide the necessary accommodations to ensure your full participation in our hiring process.

Apex Fintech Solutions UK is a leading fintech provider offering innovative investing solutions, education, and support to empower clients in the evolving financial landscape.

Company size 51–200 employees

Company type Privately held

77 employees on LinkedIn

May 23 Jan 26

Where they work

Headquarters Belfast, Northern Ireland

5-7 Upper Queen Street, Belfast, Northern Ireland BT1 2FB, GB