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About the Role

Join the ground floor of a top-tier quantitative market making business, applying knowledge of market microstructure, statistics, and software engineering to supervise and improve automated trading systems. This is a hands-on, quantitative role in a fast-paced, start-up environment focused on curating and querying complex datasets, performing statistical analysis, and communicating findings.

Responsibilities

• Monitor automated execution and portfolio risk during U.S. market hours, and respond to alerts, exceptions, and incidents
• Track real-time developments across the credit, rates, and ETF markets we trade
• Design and build the data pipelines, dashboards, and analytics that measure execution quality, monitor data health, and surface abnormal production behavior
• Apply statistical analysis to production and research data to produce actionable insights into our trading, and automate the analyses worth monitoring over time
• Contribute to the codebase underlying automated trading operations, and build processes and technology that prevent errors and outages while increasing the desk's capacity
• Interface with clients, electronic trading venues, and clearing and financing counterparties
• Provide market and data expertise to research and strategy partners
• Help extend the desk into new asset classes and markets, such as equities and futures
• Obtain and maintain the FINRA licenses required for the role (e.g., Series 7/57)

Requirements

• Demonstrated experience and passion for financial markets, with an ability to work in a high ownership, fast-paced startup environment
• Proficiency, experience, and understanding of Python and SQL used for data analysis (beyond purely utilizing gen-AI tools)
• Hands-on experience working with complex datasets end to end: curation, querying, aggregation, exploratory data analysis, and visualization
• A solid foundation in statistics — the ability to frame and answer questions mathematically, identify patterns, and reason carefully about distributions, sample sizes, and uncertainty
• Comfort working in a Unix-like environment (command line, shell, git)
• Strong data-visualization and communication skills: the ability to turn an ambiguous question into a clear, well-supported answer
• Attention to detail and clarity of thought, with rigor about cause and effect
• A bachelor's degree in a quantitative or scientific discipline (e.g., statistics, data science, computer science, engineering, mathematics, economics, or a related field)
• A master's degree, or one or more years of applied data, engineering, or trading experience (including internships)
• Experience trading fixed income, or applied market microstructure knowledge
• Experience building data pipelines or production-facing tooling (ETL, workflow orchestration such as Airflow, CI/CD, git)
• Fluency with data libraries (pandas or Polars and a plotting library) and analytical data stores (e.g., DuckDB, Parquet)
• Exposure to the FIX protocol or electronic trading systems

Skills

• Python
• SQL
• Data Curation
• Data Querying
• Data Aggregation
• Exploratory Data Analysis
• Data Visualization
• Statistics
• Unix
• Command Line
• Shell Scripting
• Git
• Communication
• FIX Protocol
• Electronic Trading Systems
• Pandas
• Polars
• DuckDB
• Parquet
• ETL
• Airflow
• CI/CD

Location

• In office

Work Type

• Full-time
• Onsite

Experience Level

• Associate
• 1+ years experience (preferred)

Education Level

• Bachelor's degree in a quantitative or scientific discipline
• Master's degree (preferred)

Benefits

• Highly competitive compensation and benefits packages
• Technology talks by experts
• Beautiful modern office
• Daily catered lunches

About the Company

• Voleon Securities (VSec) is building a global market making and principal trading firm.
• Supported by affiliate Voleon Capital Management, a $25B+ quantitative hedge fund.
• Applies knowledge of market microstructure, statistics, and software engineering to supervise and continuously improve automated trading systems.
• Currently makes markets electronically in fixed income products and is expanding into new asset classes globally.

Equal Opportunity

• The Voleon Group is an Equal Opportunity employer. Applicants are considered without regard to race, color, religion, creed, national origin, age, sex, gender, marital status, sexual orientation and identity, genetic information, veteran status, citizenship, or any other factors prohibited by local, state, or federal law.