Senior Software Engineer (Python or .Net/C#)

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.

As a Senior Software Engineer, you’ll be central in building and optimizing high-performance pipelines, APIs, and backend systems that collect, structure, and deliver deep sector intelligence. You’ll leverage .NET and MSSQL to support data-intensive applications, ensuring robust, reliable, expert-grade content. This position offers a clear path toward assuming future team leadership responsibilities.

About Deep Sector Content:

Deep sector content delivers trusted, highly granular information focused on specific industry niches. Unlike generic content, Deep Sector dives into complex datasets and specialized analysis, enabling clients to make informed, data-driven decisions at the highest level.

What You'll Do

• Architect, develop, and maintain .NET and MSSQL-based systems powering Deep Sector data products.
• Design and optimize relational data models and queries to support granular, industry-specific analytics.
• Build scalable APIs and integration layers for internal and external clients.
• Collaborate with subject matter experts to incorporate advanced analytics and machine learning into sector-specific products.
• Participate in technical design and code reviews for continuous improvement and reliability.
• Monitor, troubleshoot, and refine production environments to guarantee the quality and stability of deep sector content delivery.
• Champion best practices, mentor junior team members, and foster technical excellence in deep sector applications.
• Opportunity to progress towards future leadership roles, including technical and team lead responsibilities.

What We're Looking For

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.
• 5+ years experience in .NET/C# development.
• Advanced proficiency in MSSQL database architecture, query optimization, and stored procedures.
• Excellent grasp of data structures, algorithms, and object-oriented programming.
• Experience designing and implementing large-scale, distributed systems for data-driven applications.
• Exceptional problem-solving and communication skills.
• Experience working with AWS (preferred), or other major cloud services such as Azure or GCP.

Nice to Have:

• Experience maintaining and migrating applications between .NET Framework (legacy, Windows-only) and modern .NET (.NET Core/.NET 5+) environments.
• Familiarity with Python for data processing or analytics.
• CI/CD knowledge—GitHub Actions, Azure DevOps, Jenkins; expertise with Infrastructure as Code (Terraform, Ansible).
• Experience with containerization/orchestration (Docker, Kubernetes).

Why Join FactSet Deep Sector?

• Make a direct impact on the future of specialized financial data and analytics.
• Work in a highly collaborative environment focused on deep expertise and knowledge sharing.
• Tackle complex technical challenges that underpin our authoritative industry intelligence.
• Grow your career with a clear pathway towards technical and leadership opportunities.
• Help define the future of Deep Sector expertise—join FactSet and apply today!

What's In It For You

At FactSet, our people are our greatest asset, and our culture is our biggest competitive advantage. Being a FactSetter means:

• The opportunity to join an S&P 500 company with over 45 years of sustainable growth powered by the entrepreneurial spirit of a start-up.

• Support for your total well-being. This includes health, life, and disability insurance, as well as retirement savings plans and a discounted employee stock purchase program, plus paid time off for holidays, family leave, and company-wide wellness days.

• Flexible work accommodations. We value work/life harmony and offer our employees a range of accommodations to help them achieve success both at work and in their personal lives.

• A global community dedicated to volunteerism and sustainability, where collaboration is always encouraged, and individuality drives solutions.

• Career progression planning with dedicated time each month for learning and development.

• Business Resource Groups open to all employees that serve as a catalyst for connection, growth, and belonging.