George Thomas

IAM Engineer at Skycloak

George is an IAM engineer with 23+ years in software engineering, including 14+ years specializing in identity and access management. He designs and modernizes enterprise IAM platforms with deep expertise in Keycloak, OAuth 2.0, OpenID Connect, SAML, and identity federation across cloud and hybrid environments. Previously at Trianz and a long-term contributor to Entrust IAM product engineering, George authors Skycloak's technical Keycloak tutorials.

26 articles published

Keycloak Identity and Access Management OAuth 2.0 OpenID Connect SAML Identity Federation IAM Architecture SSO

Articles by George Thomas

Multitenancy in Keycloak Using the Organizations Feature

November 19, 2025 4 min read

Learn how to implement multitenancy in Keycloak using the Organizations feature to link external identity providers and streamline B2B authentication.

Using Custom User Attributes in Keycloak OIDC Tokens

November 17, 2025 4 min read

Learn how to add custom user attributes to Keycloak OIDC tokens and map them to your client application. Includes Spring…

Attribute Mapping in Keycloak During OIDC Identity Brokering

November 15, 2025 4 min read

Learn how to map user attributes like email and phone number in Keycloak during OIDC identity brokering with external providers…

Secure Your Spring Boot REST API with Keycloak Token

November 11, 2025 6 min read

Secure your Spring Boot REST API using Keycloak Client Credentials Grant with OAuth2 Resource Server and role-based access control.

Restrict Keycloak Clients to Specific Users

November 10, 2025 4 min read

Learn how to restrict Keycloak client access to specific users using client roles, custom authentication flows, and group-based access control.

Using Email OTP Keycloak Extension with Skycloak

November 10, 2025 3 min read

Learn how to install and configure the email OTP Keycloak extension with Skycloak to add email-based multi-factor authentication to your…

Previous 1 2 3