FactSet Research Systems Inc.
Digital - Market Data API Software Engineer - C++, C# and .NET / Hybrid
Norwalk, CT
Jul 9, 2025
Full-time
Full Job Description

FactSet creates flexible, open data and software solutions for over 200,000 investment professionals worldwide, providing instant access

to financial data and analytics that investors use to make crucial decisions.

At FactSet, our values are the foundation of everything we do. They express how we act and operate, serve as a compass in our decision-making, and play a big role in how we treat each other, our clients, and our communities. We believe that the best ideas can come from anyone, anywhere, at any time, and that curiosity is the key to anticipating our clients’ needs and exceeding their expectations.

FactSet is seeking a talented Software Engineer with strong C++, C# and .NET Core skills to join the Data Feed 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.

Responsibilities:

  • 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 stakeholders.
  • Respond to bug reports and feature requests.
  • Participate in an on-call rotation.

Minimum Required Skills:

  • 3+ years of experience developing software in C++ and/or C#.
  • 3+ years of professional software engineering experience

Required/Critical Skills:

  • 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/Additional Skills:

  • Experience developing software in any of the following languages

1. Java

2. .NET Core

3. C++

4. C

5. COM

6. Golang

7. Python

  • Experience writing software for Linux
  • Experience working in an Agile team
  • Experience developing APIs
  • Understanding of real-time market data and the requirements for processing large amounts of input with low latency

Education:

  • Bachelor’s Degree or higher in Computer Science or foreign equivalent.

The budgeted salary range for this position in the states of Connecticut and New York is $135,000.00 - 150,000.00

Company Overview:

FactSet (NYSE:FDS | NASDAQ:FDS) helps the financial community to see more, think bigger, and work better. Our digital platform and enterprise solutions deliver financial data, analytics, and open technology to more than 8,200 global clients, including over 200,000 individual users. Clients across the buy-side and sell-side, as well as wealth managers, private equity firms, and corporations, achieve more every day with our comprehensive and connected content, flexible next-generation workflow solutions, and client-centric specialized support. As a member of the S&P 500, we are committed to sustainable growth and have been recognized among the Best Places to Work in 2023 by Glassdoor as a Glassdoor Employees’ Choice Award winner. Learn more at www.factset.com and follow us on X and LinkedIn.

At FactSet, we celebrate difference of thought, experience, and perspective. Qualified applicants will be considered for employment without regard to race, color, religion, national origin, sex, sexual orientation, gender identity, disability, protected veteran status or other characteristics protected by law. FactSet participates in E-Verify

VEVRAA Federal ContractorRequest Priority Protected Veteran & Disabled Referrals for all of our locations within the stateThe EEO is the Law poster is available here.FactSet Research Systems Inc. endeavors to make our website accessible to any and all users. If you would like to contact us regarding the accessibility of our website or need assistance completing the application process, please contact recruiting@factset.com.Equal Opportunity Employment PolicyIt is the policy of FactSet Research Systems Inc. ("FactSet") to provide equal employment and advancement opportunities to all qualified employees and applicants for employment regardless of their race, color, religion, sex, age, sexual orientation, gender identity or expression, national origin, physical or mental disability, genetic information, protected veteran status, pregnancy, military or military reserve obligations, or any other class or status protected by law. This policy applies to all policies and procedures related to recruitment, hiring, training, promotion, compensation, benefits, transfer, discharge, and other terms and conditions of employment. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability or protected veteran status. If you have questions concerning this policy, please contact the Human Resources department at +1 (203) 810-1000.PDN-9f5a20a7-10c0-47fd-9ef9-cac8f95003bf
Job Information
Job Category:
Engineering
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Digital - Market Data API Software Engineer - C++, C# and .NET / Hybrid
FactSet Research Systems Inc.
Norwalk, CT
Jul 9, 2025
Full-time
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