Senior Data Engineer

Location: Chicago, IL or New York, NY

Base Salary Range: $175,000 - $225,000

(Base salary is only one part of Group One Trading's total compensation, which includes an annual discretionary bonus.)

THE OPPORTUNITY

Our Senior Data Engineers build and operate the data platform that powers trading analysis, reporting, and decision-making across Group One. They work closely with traders, risk, finance, and technology teams to understand how data is produced and consumed and turn that understanding into reliable, well-modeled, and well-governed data systems.

Data usage is expanding rapidly across every part of our firm, and we are building a next-generation data platform to support it. Our existing Microsoft-based environment gives us a strong foundation and deep understanding of our data, but much of what comes next is greenfield. You will work closely with our Principal Data Engineer to challenge and refine architectural decisions, build the platform's core components, and thoughtfully migrate existing workloads into a modern data environment.

THE SKILLSET

We are looking for someone who has built modern data systems before and understands the engineering decisions that determine whether a data platform remains reliable and maintainable as it grows.

• Significant professional experience building and operating production data platforms, ideally in financial services or another environment where data accuracy has direct business consequences • Deep hands-on experience with…