100% remote (Europe) contract role delivering hands-on platform and security engineering for Form3's cloud-native payments systems. Responsibilities include designing and building distributed, production-ready capabilities across API security, cryptographic controls, AI governance, software supply chain security and automated security tooling using Go and cloud/container technologies (AWS/GCP/Azure, Kubernetes). Contractors must be based in one of the listed European countries and will start their first day in a local office to collect equipment.