Norwalk, CT

Senior Software Engineer – Market Data Feeds

Job Description

FactSet is seeking a talented software engineer with strong C# and .NET Core skills to join the Datafeed Engineering Team.  This team is responsible for the development and maintenance of servers that deliver streaming real-time market data, and multiple SDKs that target several different programming languages, on both the Windows and Linux platforms.  Our software allows internal and external engineers to programmatically access real-time market data content across a wide variety of platforms and languages.  With just a few lines of code, users can easily integrate FactSet’s wide range of streaming market-data into their applications.


  • Develop, test, and deploy software and services to end users.
  • Design and implement user-friendly APIs that deliver streaming real-time market data.
  • Participate in and contribute to design reviews, code reviews, and brainstorming sessions.
  • Communicate and collaborate with product developers, QA, API users, and other stake holders.
  • Respond to bug reports and feature requests.
  • Participate in an on-call rotation.

Required Skills

  • Bachelor’s Degree or higher in Computer Science or foreign equivalent.
  • 3+ years of experience developing software in C#.
  • 3+ years of professional software engineering experience
  • Strong knowledge of software development in Visual Studio
  • Fundamental understanding of network programming
  • Ability to communicate effectively with peers within FactSet and with external users.
  • Track record of success developing and shipping software on time.
  • Ability to work in groups and independently

Desired Skills

  • Experience developing software in any of the following languages
    • Java
    • .NET Core
    • C++
    • C
    • COM
    • Golang
    • Python
  • Experience writing software for Linux
  • Experience developing APIs
  • Understanding of real-time market data and the requirements for processing large amounts of input with low latency

About FactSet

At FactSet, exceptional talent fuels every aspect of our business, from the constantly evolving financial software we develop to the unrivaled client service at our core.  As we continue to grow, we rely on new ideas and creative thinking to maintain our position on the cutting-edge of financial services and software. FactSet hires the best of the best in the financial technology industry. Whether you are a college student, recent graduate, or working professional, product-facing or client-facing, you will dynamically contribute to FactSet’s flourishing business. You will work with peers who are just as motivated and passionate as you are, in an environment that promotes team, personal and professional growth. When you join our team, you’ll receive immediate responsibility and recognition for your work, and will be valued personally and professionally. As the financial services software industry continues to grow, so will the future of FactSet and its employees.