Senior Platform Engineer - Internal Developer Platform

About Frontiers At Frontiers, our purpose is simple yet ambitious: to make science open. We believe open science empowers the global scientific community to accelerate discovery and develop the solutions needed for healthy lives on a healthy planet. We are one of the world’s largest and most influential open-access research publishers. Every article we publish is peer-reviewed and quality-certified, ensuring research is accessible to everyone, everywhere. To date, Frontiers research has been viewed over 4 billion times, demonstrating the real-world impact of science without barriers. Joining Frontiers means being part of a global, mission-driven organization at the intersection of science, technology, and innovation — working alongside passionate colleagues who care deeply about advancing knowledge for the benefit of society. To learn more about our impact and culture, please watch this video. The Mission At Frontiers, we are rewriting the rules of scientific publishing. To support our scale, we are transforming our Engineering Platform into a state-of-the-art Internal Developer Platform (IDP) built on modern principles and AI-augmented workflows — with a North Star of evolving it into an Agentic Development Platform (ADP) where human engineers and AI agents build software side by side, safely and at scale. We are looking for a Senior Platform Engineer — Internal Developer Platform to help build and run that platform and the AI-First Delivery capabilities on top of it. This is the modern evolution of the DevOps Engineer role: you won't run a ticket queue — you'll treat the platform as a product, own a capability area end to end, and ship the golden paths, guardrails and automation that let our Stream-Aligned Teams (and their agents) deliver faster and more safely. You'll work closely with our Platform Product Manager and Senior Cloud Architect — turning platform strategy and prioritised needs into working capabilities. The Technical Context You will build and operate the capabilities that make up the IDP. Core Stack: Microsoft Azure, Kubernetes (AKS), containers (Docker); services in C#/.NET and Node.js. IaC & GitOps: Terraform, Helm, and a move toward GitOps with ArgoCD. CI/CD: Evolution from Azure DevOps toward GitHub Actions, modernizing pipelines (not a blind "lift and shift"). Integration: Azure API Management, Apollo Federation/GraphOS, n8n. Security: Azure Entra ID, SonarQube, Azure Policy, Key Vault. Observability: NewRelic and Grafana (proactive SRE and business-value metrics). Developer Experience & AI: Backstage, our Technology Framework (policies/standards as executable AI context), MCP, and AI-driven development (e.g. Cursor AI, GitHub Spec-Kit). What You'll Do Build and operate the IDP: golden paths, self-service templates, the developer portal (Backstage) and IDP catalog, and guardrails that keep teams compliant by default ( guardrails, not gates ). Own CI/CD and GitOps: GitHub Enterprise and GitHub…