Platform Infrastructure Engineer: UP Platform Location: London UP Platform Infrastructure PI sits at the beating heart of how software gets built shipped and run across the UP ecosystem. This team does not just provide infrastructure it curates an exceptional developer experience. Acting as the bridge between core infrastructure and running services PI creates scalable failure resistant tooling that empowers engineers to move fast with confidence. You will help define the Golden Path from design to deployment balancing developer autonomy with smart guard rails and shaping a platform that is resilient intelligible and future proof. This is a role for engineers who care deeply about how other engineers work. You will influence outcomes across more than twenty development teams consolidate fragmented approaches and champion modern practices including agentic AI to make iteration faster safer and smarter. You will dogfood what you build treat developers as your customers and broadcast an infectious passion for developer experience. If you thrive at the intersection of software craftsmanship platform engineering and systems thinking this is a chance to leave a lasting imprint on how software is built at scale. Key Skills * Strong software engineering background with platform engineering instincts * Hands on experience with CI CD systems such as GitHub Actions TeamCity Concourse or similar * Proficiency in at least one of Python Go Java or Ruby * Solid working knowledge of Kubernetes and modern cloud platforms * Confidence designing tooling that spans build release and runtime concerns Key Requirements * Six or more years delivering high impact contributions in software engineering or adjacent roles * Proven ability to design operate and evolve shared platforms used by many teams * Track record of improving nonfunctional requirements such as reliability security observability and delivery speed * Experience supporting teaching and enabling other engineers at scale * Informed practical perspective on using AI agents within the SDLC * Passion for simplifying the complex and creating standards that teams want to adopt