Senior Software Engineer

Location: Greater London

At Fact Set, 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.

Join Fact Set's Release Infrastructure team as a Senior Software Engineer, where you'll architect and operate the core developer platforms that enable engineering teams across our global organisation to build the financial data and analytics solutions trusted by investment professionals worldwide.
** Your Team's Impact
** As a member of our Release Infrastructure team, you'll own critical infrastructure, including Git Hub, Sourcegraph, Sonar Qube, Artifactory, and AI-powered coding assistants. These are the tools that directly accelerate the delivery of innovative workflow solutions to buy-side, sell-side, and wealth management clients. Your work will have a measurable impact: when you optimise our build pipelines or enhance our code search capabilities, you're helping Fact Set engineers ship features faster that enable better investment decisions for our clients.

This is a deeply technical role that equally balances hands-on software engineering with strategic infrastructure design.
** What You'll Do
*** Write production code, build backend services in Go and Python, and develop automated solutions that scale across thousands of engineers.
* Developing automation that scales across thousands of engineers
* Solve Complex integration challenges between enterprise platforms
* Architect solutions, evaluate technologies and implement them
* Leverage your system administration expertise to deploy and manage Linux servers
* Infrastructure as Code tools like Terraform to architect cloud infrastructure, and design systems that handle the demands of a global engineering organisation
** What We're Looking For
** We're looking for someone who brings a security-first mindset to everything they build, balances feature delivery with cost management and is committed to creating experiences that empower our employees globally. Furthermore, continuous learning is essential: we expect you to stay aligned with modern engineering practices and proactively explore emerging tools and technologies that accelerate our collective impact. At Fact Set, we believe the best ideas can come from anyone, anywhere, at any time, and that curiosity drives us to anticipate needs and exceed expectations.

You'll collaborate closely with teammates who are equally committed to growing together and pushing the boundaries of what's possible in developer enablement. Given the critical nature of our team’s responsibilities, this role includes participation in an on-call rotation to support critical developer infrastructure. Fact Set also offers work flexibility, with arrangements based on individual circumstances and role requirements.
** Required Skills
*** 4+ years' experience in writing backend services and/or automation using a high-level programming language (Strong preference for Go, Python, or NodeJS). Willingness to learn and develop in multiple languages used by the team (Go and Python).
* 4+ years' experience developing software release pipelines for publishing libraries/applications/services using CI/CD platform(s) (Strong preference for Git Hub/Git Lab/Forgego Actions).
* Familiarity with Continuous Integration and Delivery best practices.
* Experience in system administrative tasks, including deployment, configuration, and operation of Linux systems (Strong preference for Debian-based distributions).
* Ability to clearly communicate with geographically distributed team members and other employees, using asynchronous communication tools.
** Desired Skills
*** Familiarity with the following platforms:
Git Hub and Artifactory.
* Experience using an Infrastructure as Code tool, such as Terraform/Open Tofu or Pulumi, for architecting, deploying, and managing cloud infrastructure.
* Experience using Docker and Kubernetes.
** What's In It For You
** At Fact Set, our people are our greatest asset, and our culture is our biggest competitive advantage. Being a Fact Setter 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…