About the role
Hg Catalyst is the AI product incubator for Hg, one of Europe's leading software investors with $100B+ under management. We're not consultants or advisors - we're builders.
We embed inside some of the world's leading software companies to build the agentic products that millions of people rely on to do their jobs. The industries we work in have fractal complexity: layers of rules, exceptions, and edge cases that compound the deeper you go. Accuracy is non-negotiable. We build production-grade AI that consistently delivers for the people who depend on it.
Catalyst is a team of engineers, product leaders, and designers. We operate from London and New York and have shipped 30+ products across complex, regulated industries including tax, accounting, legal, compliance, financial services, payroll, and healthcare.
The Role: Applied AI Engineer
We're looking for Applied AI Engineers who can work at the intersection of AI and real-world business problems. This isn't about building demos. You will own end-to-end development of production AI systems serving real customers from day one.
What You'll Do
Own the full stack and product lifecycle
- Architect and build production-grade AI applications from zero to one.
- Design systems that handle enterprise-scale data and millions of users.
- Implement everything from model serving infrastructure to polished user interfaces.
- Make technical decisions balancing innovation with reliability.
Make AI work where it's hardest
- Navigate regulated enterprise environments with demanding data, compliance, and stakeholder requirements.
- Build products that generate revenue and serve real customers, not prototypes.
- Work across fintech, enterprise SaaS, B2B services, and more.
Build across multiple products and industries
- Lead product development across portfolio companies, building in new industries every year.