Senior C# Developer

Job Description

3Red Partners LLC, a proprietary trading firm headquartered in Chicago, is seeking a Senior Front End C# Developer.  3Red Partners is committed to leveraging technology and math to implement competitive trading strategies. Our team has extensive, global experience in a wide variety of asset classes, risk management, and leading trading technologies. We focus our efforts on hiring extremely talented and motivated individuals to collaborate with each other and compete in the world’s financial markets.

The Senior C# Developer will have the opportunity to work in one of our offices architecting, refactoring and developing the future internal trading interface for the company. We are seeking a candidate that is searching for an opportunity to make a real impact, deliver value, and work with an experienced team.


  • Design, refactor and implement the core GUI functionality using C# and various microservices
  • Develop server side logic and services to drive high performance trading interfaces
  • Work directly with traders and developers to identify usage patterns, key deployment characteristics, automation opportunities
    • Fast development cycle, with the expectation of multiple iterations in designing the visualization of data and features.
    • Understanding of lockless system design.
    • Experience having architected and built at least one high throughput (multiple market data sources) GUI system.
  • Identify methods to meet rigorous application performance requirements


  • A Bachelors, Masters, or PhD degree with more than 3 years of experience with a degree in Computer Science, Engineering, Physics or a similar field
  • Expert coding in C# with strong Python experience with some knowledge of C++ a plus. 
  • Exposure to mosquito/Redis and other messaging relating protocols and processes.
  • Strong organizational skills and the ability to multi-task and prioritize multiple projects at one time
  • Experience with V8 and websockets are a plus


3Red Partners prides itself on offering highly competitive benefits for our employees. We have an excellent work-life balance and are able to be most productive by working together. The firm offers competitive salary and performance-based bonuses, casual dress, fully stocked pantries with many healthy options (and a bit of chocolate, too!), catered breakfast and lunches weekly, 3Red outings, and a Zen Room for moments of relaxation. Additionally, 3Red offers productivity allowances, a generous learning and development reimbursement, retirement planning, and premium health benefits.