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GGroup One Trading

Software Developer Intern

Chicago, ILListed 4w ago

  • On-site
  • Internship

About this role

Software Developer Intern

Location: Chicago

The Opportunity

Group One Trading, a dynamic options trading firm, is actively seeking highly-motivated people who are interested in learning and getting hands-on experience with electronic trading systems. Our system is built on the .NET platform using C#. The system has enough variety to challenge and interest anyone: an information-dense user interface, a high-throughput, low latency parallel computational core, service-oriented architecture, and interfaces to exchanges' market data and execution systems.

Who We Are

We are committed to creating a diverse environment and are proud to be an equal opportunity employer. At Group One, we value transparency and collaboration coming from unique perspectives and backgrounds. We strive to create a workplace in which all employees have an opportunity to participate and contribute to the success of the business.

What We Do

Group One is a proprietary trading firm specializing in market making and liquidity providing strategies in options markets. Our traders provide competitive liquidity across a broad range of securities by managing portfolios of several hundred issues and simultaneously streaming quotes across multiple exchanges. Our systems and network infrastructure are vital in ensuring success.

The Skill Set

During this internship, you will be mentored by senior developers and gain exposure to the business of equity options trading. You will gain real-world experience with a team that develops proprietary software in an ever-changing, fast-paced, and competitive environment.

A broad, multi-platform skill set will help you be successful in this role, but there will be plenty of learning opportunities no matter how many of these skills you bring in with you. We also encourage applicants with non-traditional backgrounds to apply.

- Must be an active student during the following Fall semester working towards a BS, MS, or Ph.D. in Computer Science, Computer Engineering, or a related technical field.

- Familiarity with a C-style object-oriented language: C#, Java, C++, or Objective-C.

- Solid Computer Science and software development fundamentals.

- Desire to learn and grow as a software developer.

- Ability to effectively communicate and collaborate with colleagues across different functional units and locations.

Within 1 Month, You'll

- Complete your initial orientation, become familiar with our environment, our infrastructure, and our business.

- Learn the roles and skillsets of your Dev teammates to discern and utilize the best advice and information for yourself and others.

Within 3 Months, You'll

- Engage and contribute directly to projects with real implications for our traders and company.

The Benefits

We offer a competitive compensation package which includes company-paid housing or housing stipend, individualized mentorship, fresh fruit and snacks daily, casual dress environment, social events, and more! In-person interview expenses for travel and childcare will be reimbursed by Group One.

Pay not listed
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Location
Chicago, IL
Work model
On-site
Role type
Internship
Family
Software Engineer
Listed
4w · Sep 9, 2026
G

Group One Trading

51–200 employees

  • Fintech & Payments
  • Developer Tools & Infrastructure

Group One Trading is a privately held proprietary trading firm and market maker in exchange-listed derivatives, with a focus on US equity options. It provides liquidity through floor and electronic trading and develops proprietary software, risk-management systems, and data tools for its trading operations.

More at Group One Trading

6 open
CompanyRoleLocationWork modelPayListed
    1. GGroup One Trading↳Group One TradingPrincipal Data EngineerChicago, IL · On-siteOn-site$200,000–250,0006d
    2. GGroup One Trading↳Group One TradingSenior Data EngineerChicago, IL · On-siteOn-site$175,000–225,0009d
    3. GGroup One Trading↳Group One TradingSenior Software EngineerChicago, IL · On-siteOn-site$200,000–275,00010d
    4. GGroup One Trading↳Group One TradingProject ManagerNew York City, NY · On-siteOn-site$125,000–150,0002w
    5. GGroup One Trading↳Group One TradingApplication Support SpecialistChicago, IL · On-siteOn-site$80,000–100,0002w
    6. GGroup One Trading↳Group One TradingQuantitative ResearcherChicago, IL · On-siteOn-site$175,000–225,0002w

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