Senior Platform Engineer

About hyperexponential (hx) At hyperexponential, we're building the AI-powered platform that enables the world's most critical decisions in a £7 trillion industry, which risks to take, and how to price them. These are the decisions that shape real-world outcomes: whether rockets successfully launch into space, autonomous vehicles make it to market, or communities recover after major storms. Until now, insurance has been making billion-pound decisions using outdated tools. We're changing that. Our platform brings together data, AI, and human expertise to give insurers the fastest path from submission to decision - helping them move faster, act smarter, and take on more risk with confidence. Backed by a16z, Highland Europe, and Battery Ventures, we're scaling globally - already trusted by nearly 50 of the world's largest insurers, with zero churn and billions in premiums flowing through hx. What began as a single product in one market has rapidly evolved into a multi-product, multi-territory platform powering every stage of pricing and underwriting. AI is at the core of what we do - from building the world's first domain-specific AI peer programmer for insurance (think GitHub Copilot with a PhD in actuarial science) to shaping agentic workflows that reinvent how this industry operates. What makes hx different is the people who build it. Here, impact isn't tied to title or tenure; it's defined by the challenges you take on and the discipline you bring. Surrounded by peers who stretch you, you'll do the best, hardest work of your life in a company engineered to endure. If that sounds like you, join us in building what comes next. About the Platform team Platform at hx builds the foundation that enables engineering teams to ship secure, scalable applications at velocity. We're evolving towards an AI-first platform where self-service infrastructure, intelligent automation, and reusable components compound developer productivity and operational excellence. This isn't about maintaining the status quo; we're reimagining how modern software delivery works. As a Senior Platform Engineer , you'll shape this evolution directly. You'll productise platform capabilities that make security, reliability, and best practices the default path, not the exception. You'll embed AI into how we build and operate, reducing manual toil and accelerating cycle times. You'll partner across engineering, security, and product teams to understand needs, drive adoption, and continuously raise the bar for what great infrastructure looks like. This role demands ownership beyond tickets: you'll ship meaningful capabilities end to end, measure their impact, and iterate based on real feedback. You'll work with teams who expect excellence and who will stretch your thinking. Platform here is a force multiplier, not a service desk, and the best work happens when infrastructure enables autonomy rather than gates it. Check out our Engineering Candidate Hub for a behind the scenes look at the team you would be joining! What you'll be doing Deliver self-service platform capabilities that drive measurable adoption across engineering teams, building reusable infrastructure components that reduce provisioning time and embed security and reliability by default Embed AI into developer and operational workflows, implementing intelligent automation across CI/CD pipelines and operational tooling that demonstrably reduces manual effort and accelerates delivery cycles Lay the foundation for agentic platform capabilities, prototyping and shipping initial features that enable more autonomous workflows with clear time savings and operational improvements teams use weekly Strengthen security posture and operational standards through infrastructure design, ensuring new services adhere to platform-defined best practices with measurable reductions in misconfigurations and security exceptions Treat the platform as a product, continuously improving developer experience through simplification, standardisation, and feedback loops, prioritising usability and value for internal customers Partner across engineering, security, and product teams to understand requirements, influence technical decisions, and drive adoption of platform capabilities through clear communication and demonstrated value What you'll need to have done Designed and built scalable, secure cloud infrastructure in production environments, demonstrating deep hands-on experience with Infrastructure as Code (Terraform, Pulumi, CloudFormation) and modern CI/CD practices that deliver production-grade platform capabilities Shipped self-service infrastructure components that were actively adopted by engineering teams, with measurable improvements in deployment velocity, reliability, or developer experience Leveraged AI and automation to solve real operational problems, whether through implementing AI-driven tooling, building intelligent workflows, or experimenting with emerging technologies and translating them int