Principal Platform Engineer (Identity Platform)

Location: Staines-upon-Thames, England, United Kingdom; hybrid work opportunities are available.

Company

hirify.global builds AI-native enterprise software for asset, operations, and critical-service management on a cloud-based platform.

What you will do

• Architect and build a unified fine-grained authorization model across cloud-native, legacy hosting, and lifecycle cloud environments.
• Operate SpiceDB-based relationship authorization on PostgreSQL for correct, fast, multi-tenant access decisions.
• Architect and operate enterprise authentication with Curity while supporting Keycloak estate migrations.
• Design identity patterns covering federation, SSO, directory integration, tenant signing keys, and token flows.
• Run identity infrastructure on Kubernetes, including Helm deployments, persistent storage, cutovers, backup and restore, and disaster recovery.
• Write Go code and improve observability, performance, and resilience of identity services under production load.

Requirements

• Production-scale experience engineering fine-grained authorization systems in distributed, multi-tenant environments.
• Hands-on experience with SpiceDB, OpenFGA, Ory Keto, or an equivalent Zanzibar-style authorization engine, including ReBAC, RBAC, ABAC, schemas, and permission models.
• Production experience architecting and operating Curity and/or Keycloak, including configuration, customization, extensions, upgrades, and operations.
• Strong knowledge of OAuth 2.0, OIDC, SAML 2.0, JWT and opaque token patterns, federation, SSO, LDAP, and Active Directory.
• Experience with Go, PostgreSQL, Kafka or RedPanda, Kubernetes on AKS, containers, GitOps, infrastructure as code, and distributed systems.
• Ability to operate identity providers under load and handle observability, JVM tuning, sizing, backup, restore, and disaster recovery.

Culture & Benefits

• Hybrid work opportunities with an emphasis on inclusive workplace experiences and community.
• Flexible working arrangements designed to support diverse needs and lifestyles.
• International environment focused on collaboration, sustainability, innovation, and positive global impact.
• Direct communication and strong technical opinions are encouraged.