Senior Software Engineer in London

Catapult is building the future of sports performance technology, with a mission to unleash the potential of every athlete and team on earth. We don't just work in the sporting industry; we are actively changing it. Since 2006, our solutions have been leading the way in sports performance software, science, and data, in a world where 1% can literally mean the difference between winning and losing. We work with over 5,000 teams around the world, empowering coaches, managers, and trainers in premier teams in the NFL, NBA, NHL, MLS, EPL, AFL, NRL, NCAA, and more.

We provide the information they need to optimize athletes’ health, game-day readiness, and performance, as well as in-game tactics. Catapult is a sports technology company that empowers professional teams to make data-driven decisions. We deliver health, performance, video, and AI insights from the locker room to competitive environments, ensuring every decision is an opportunity to gain an advantage, sharpen performance, and build lasting success.

We want people who are passionate about making coaches more productive.

We are looking for a foundational Senior Web Engineer to spearhead our transition into modern web and mobile application ecosystems. Currently, our core engineering strengths lie in high-performance C++/Qt desktop development. However, as our platform evolves, we are increasingly moving key administrative, collaborative, and customer-facing workflows to the web and mobile wrapped environments. This role is a unique hybrid of architecture, rapid product prototyping, and strategic engineering leadership. You will be the first "pure web" engineer on this team, responsible for bridging our existing backend architecture with high-fidelity, production-grade frontend applications.

What you’ll do:

• Productize Core Utilities: Transform an existing library of internal scripts, data importers, and management tools into reliable, production-ready web applications.
• Migrate & Innovate Workflows: Decentralize complex workflows (such as group administration and user management) out of traditional thick clients and rebuild them into seamless web and hybrid experiences.
• Serve as a "Tiger Team" Catalyst: Act as a high-mobility rapid responder to build bespoke tools, custom league integrations, and special project solutions for high-profile clients where pivoting our core platform (Focus) is too heavy.
• Establish Engineering Standards: Define modern web best practices, set up robust CI/CD pipelines, and collaborate with Catapult’s wider web divisions to align technology stacks.
• Lay the Foundation for a Team: Anchor the team's web-technology domain expertise, mentoring C++/Qt engineers looking to expand their skills while preparing to lead and scale a dedicated web development squad in the future.

What you’ll need:

• Deep Web Ecosystem Expertise: Extensive professional experience with React, modern JavaScript/TypeScript, and building cross-platform apps wrapped in Electron and React Native.
• Application-Layer Focus with Backend Literacy: Strong experience consuming complex internal APIs and managing frontend state, complemented by a solid understanding of database design and backend architecture for when custom services are required.
• Architectural & DevOps Autonomy: Demonstrated ability to build web environments from scratch, including configuring optimized developer workflows, automated testing, and deployment pipelines.
• Pragmatic & Fast-Paced Problem Solving: A proven track record of operating in a "tiger team" style capacity—capable of rapidly prototyping and delivering high-impact features under tight timelines for enterprise partners.
• Technical Leadership Aptitude: Excellent communication and collaboration skills, with the desire or experience required to mentor peers, align with cross-functional teams, and eventually transition into an engineering lead.

What your success will look like:

In 6 months time…

• Our primary internal utilities and importers are launched as stable, production-grade web applications.
• Key administrative workflows are decoupled from thick clients and successfully deployed to the web ecosystem.
• You have established independent web CI/CD pipelines and deployment workflows.
• You execute the web roadmap self-sufficiently, taking strategic direction from the Head of Basketball, Ice Hockey & Baseball.

In 12 months time…

• You operate with high autonomy, proactively identifying web-based solutions and directing how they are architected.
• You are leading a small, lean squad of web developers, cultivating high standards and mentoring peers.
• Your team is recognized for rapid turnaround times, flawlessly executing special requests for elite teams and major leagues.

Why Catapult?

We have amazing people. We promise you’ll work with some of the most ambitious, intelligent people in an exciting industry, and do some of the best work of your life. We encourage our people to engage in constructive, open, and honest communication to make Catapult extraordinary.

We work in a collaborative yet challenging environment to consistently improve our performance, which in turn impacts our customers' performance. Our workforce spans more than 20 countries. You'll have the opportunity to work with people from multiple nationalities and cultures, and to build your global awareness.

We value improvement and development. We are challenging ourselves to continuously grow and become a high-performance company. That means we maintain a growth mindset in everything we do, and our people are always looking for ways to improve.

There is an unlimited opportunity to grow, do more, and do better. Whether you’re interested in sports or not, you’ll have the satisfaction of knowing your work is supporting some of the most successful teams and athletes on the planet!

Research shows that while men apply for jobs when they meet an average of 60% of the criteria, women and other marginalized groups tend only to apply when they check every box. So if you have what it takes, but don't meet every single point in our job ad, please still get in touch! We would love to have a chat and see if you could be a great addition to our team.

We are building the future of sports performance. Our priority is to find the brightest talent who can add to our team culture, actively contribute, and be excited about what they do. All offers of employment are subject to Catapult's positive prehire check. To find out more, please contact the Talent Partner for this role.