Who We Are

Founded in 1980 as Aardvark Financial, TransMarket Group (TMG) is a privately held global markets proprietary trading firm in Chicago. We use next-generation technology to capture opportunities around the world and manage risk in financial markets. Our mission is to bless others through the services we provide and through the generous stewardship of the wealth we create.

TMG is a well-established and profitable business as a respected member of the global financial system for over 40 years, but also is like a startup because the potential of our group is at least one order of magnitude greater than what we are currently producing. We have an entrepreneurial culture and collaboratively develop our business with patience and discipline; we work hard, learn constantly, and relentlessly improve our expertise.

Description

Our Data Engineering team designs, builds, and supports the data systems that power our proprietary trading business. This smaller, focused team works closely with software developers, traders, operations, and accounting/finance teams to make high-quality data accessible, reliable, and actionable across the firm. You will help develop production-quality pipelines, services, databases, and tools that support trading operations, reporting, research, and automation. The role offers a high degree of ownership and hands-on learning, with exposure to Python, SQL, Linux, APIs, data modeling, and financial systems. The components you work on will help ensure that critical business and trading data is accurate, timely, and dependable.

Responsibilities

Work with senior developers to assist in and learn all facets of data engineering and development applied to the business
Develop, code, maintain, and support production-quality components for global proprietary trading
Develop expertise in data engineering principles, Python, SQL, and high-performance finance systems
Collaborate with technology, software, trading, business, and accounting/finance teams

Requirements

BA/BS/MS in Computer Science, Computer Engineering, or equivalent experience
Strong Python skills
Proficiency with SQL and relational database design
Comfort working in a Linux environment
Source control with Git
Knowledge of RESTful API design
Docker/containerization
This position requires physical presence and is on-site (no remote work)

Good to have

C++
Workflow orchestration (Airflow)
Experience integrating LLMs or AI tooling into engineering workflows
Exposure to financial markets, trading operations, or clearing
Dashboard design and data visualization

Benefits

We offer one of the most generous profit sharing programs in the industry because we believe our employees should be able to take part in our rapid growth and success. We are proud to offer more world-class benefits for our full-time employees and their families.

TransMarket Group is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, gender, sexual orientation, gender identity or expression, religion, national origin, marital status, age, disability, veteran status, genetic information, or any other protected status.

About the company

TransMarket Group is a private global proprietary trading firm that uses its own capital to trade financial markets, with offices in Chicago, Puerto Rico, and Switzerland. It operates by applying advanced technology and disciplined trading practices to identify opportunities and manage risk through proprietary trading strategies executed by experienced teams worldwide. The company differentiates itself with an entrepreneurial, collaborative culture, a focus on continuous learning and disciplined development, and a mission that combines financial success with wealth stewardship. Its goal is to generate profitable outcomes from proprietary trading while responsibly blessing others through the wealth it creates and its stewardship.

Company Size

51-200

Company Stage

N/A

Total Funding

N/A

Headquarters

Chicago, Illinois

Founded

1980

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Simplify's Take

What believers are saying

TMG posted 18 Chicago openings on October 3, 2026, spanning trading, research, and HFT.
TMG's careers page updated October 2, 2026 still hires rolling, showing active demand.
FIA's 2026 profile confirms expansion beyond rates into broader asset classes and geographies.

What critics are saying

Nine FINRA regulatory disclosures create supervision and reputational risk during market stress.
TMG's private status hides PnL concentration and strategy decay from outsiders.
A prolonged trading loss or CFTC investigation would cripple this small prop shop within months.

What makes TransMarket Group unique

Chicago, Puerto Rico, and Switzerland enable around-the-clock trading across global time zones.
FIA's February 18, 2026 profile says TMG trades commodities, options, equities, and rates.
Onsite-only hiring and profit-sharing reinforce TMG's tightly controlled, high-discipline culture.

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Benefits

Profit Sharing

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TransMarket Group

Junior Data Engineer

About the job