Principal UI Developer

| Chicago

Principal UI Developer 

PEAK6 was brought to life by the idea that the development of integrative technology can improve how business is done. The passion for that idea powers our firm still. As a Principal UI Developer, you are free to explore unique solutions and try fresh ideas that may benefit our trading businesses and investment companies. We're a development team working in a continuous delivery environment and need quick-thinking, creative and collaborative developers to join us. 

You’ll be responsible for:

  • Making an immediate impact - the work you do will help in tangible ways. You'll create front-end applications that will enable our teams to work smarter and faster within our trading and investments businesses. 
  • Building UI tools to support various operations from front-office and trading, to risk and data management across the firm. 
  • Providing technical leadership and UI direction. You'll work with the current platform and help us make changes to ensure we are staying ahead of the curve by evaluating new frameworks and libraries. 
  • Providing guidance and mentorship on coding and styling best practices. 

 You’ll gain loads of experience in this role but before you do, you should have:

  • Expert level skills in all aspects of the presentation layer and technologies including JavaScript, CSS and HTML5
  • Chrome Extensions development 
  • Experience with several client-side frameworks – Angular, Backbone, React or the like
  • Experience writing unit / integration tests for UI components preferred
  • Experience building demanding and performant UI components
  • Experience defining and leading web UI architecture direction

All of our developers have these traits. You should, too.

Motivation Collaboration Curiosity

Integrity Adaptability Ingenuity

Life at PEAK6

We want you to like coming to work so we work really hard to make your job fun and different from any other.

As a PEAK6 Principal UI Developer, you can enjoy:

  • Generous medical, vision and dental plans
  • Matching 401(k) programs
  • Adoption assistance & family leave
  • Sabbatical program
  • Speakers Series
  • Massage days
  • Poker tournament with a grand prize of a World Series of Poker buy in
  • Sports leagues
  • Cornhole tournaments
  • Annual PEAK6 Party
  • Yoga classes
  • Tuition reimbursement
  • Lasik eye discount
  • Philanthropy events
  • Annual wellness screens and flu shots
  • Bagel Fridays/expiration lunches
  • Birthday gifts
  • Charitable matching gift program

Learn more about our culture on our website at

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Technology we use

  • Engineering
    • GolangLanguages
    • JavaLanguages
    • PythonLanguages
    • jQueryLibraries
    • ReactLibraries
    • ReduxLibraries
    • MongoDBDatabases
    • MySQLDatabases
    • PostgreSQLDatabases


141 W. Jackson Blvd, Chicago, IL 60604
141 W. Jackson Blvd, Chicago, IL 60604

Perks of working here

401(K) Matching
Company Outings
Health Benefits
Tuition Reimbursement
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