Job Title: Senior Java Spring Boot Developer (SAML & OAuth)
Location:
Remote
Engagement Type:
Contract
(Initial part-time, hourly; potential to convert to full-time)
About The Role
We are seeking a highly experienced Senior Java Spring Boot Developer with deep expertise in OAuth 2.0 and SAML 2.0 to design and build secure, production-grade microservices. This role requires a hands-on engineer who can develop authentication and authorization mechanisms from the ground up and integrate with enterprise identity providers.
Key Responsibilities
Develop and maintain production-grade microservices using Java 17+ and Spring Boot
Implement and manage OAuth 2.0 flows, including:
Authorization Code
Client Credentials
PKCE
Token Introspection
Refresh Token Rotation
Integrate SAML 2.0 Single Sign-On (SSO) with enterprise identity providers such as Okta, Azure AD, and Ping Identity
Build and manage distributed job scheduling systems using:
Quartz Scheduler (clustered)
Spring Batch
Spring Scheduler
Define and enforce API security policies, including:
Token validation
Scope enforcement
Rate limiting
Audit logging
Ensure secure and scalable system architecture aligned with modern best practices
Required Experience & Skills
7+ years of professional experience in Java development with Spring Boot in production environments
Strong expertise in Spring Authorization Server or Spring Security OAuth2
Deep understanding of OAuth 2.0 and OpenID Connect, with ability to implement flows without relying solely on frameworks
Hands-on experience with SAML 2.0, including:
SP-initiated and IdP-initiated SSO
Metadata exchange
Attribute mapping
Assertion encryption and signing
Experience with job scheduling frameworks:
Quartz (clustered environments)
Spring Batch pipelines
Distributed scheduling with Spring
Strong knowledge of:
Spring Security
Spring Cloud Gateway
JWT handling (signing, rotation, blacklisting)
Solid understanding of:
REST API design
HTTP security headers
HTTPS/TLS protocols
Experience with relational databases such as PostgreSQL or MySQL, and ORMs like Hibernate/JPA
Familiarity with event-driven architectures using Kafka or RabbitMQ
Proficiency in Git, Maven/Gradle, Docker, and Kubernetes fundamentals
Nice to Have
Experience working with identity/authorization platforms such as Keycloak, Auth0, or Okta (as an Authorization Server)
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Location:
Remote
Engagement Type:
Contract
(Initial part-time, hourly; potential to convert to full-time)
About The Role
We are seeking a highly experienced Senior Java Spring Boot Developer with deep expertise in OAuth 2.0 and SAML 2.0 to design and build secure, production-grade microservices. This role requires a hands-on engineer who can develop authentication and authorization mechanisms from the ground up and integrate with enterprise identity providers.
Key Responsibilities
Develop and maintain production-grade microservices using Java 17+ and Spring Boot
Implement and manage OAuth 2.0 flows, including:
Authorization Code
Client Credentials
PKCE
Token Introspection
Refresh Token Rotation
Integrate SAML 2.0 Single Sign-On (SSO) with enterprise identity providers such as Okta, Azure AD, and Ping Identity
Build and manage distributed job scheduling systems using:
Quartz Scheduler (clustered)
Spring Batch
Spring Scheduler
Define and enforce API security policies, including:
Token validation
Scope enforcement
Rate limiting
Audit logging
Ensure secure and scalable system architecture aligned with modern best practices
Required Experience & Skills
7+ years of professional experience in Java development with Spring Boot in production environments
Strong expertise in Spring Authorization Server or Spring Security OAuth2
Deep understanding of OAuth 2.0 and OpenID Connect, with ability to implement flows without relying solely on frameworks
Hands-on experience with SAML 2.0, including:
SP-initiated and IdP-initiated SSO
Metadata exchange
Attribute mapping
Assertion encryption and signing
Experience with job scheduling frameworks:
Quartz (clustered environments)
Spring Batch pipelines
Distributed scheduling with Spring
Strong knowledge of:
Spring Security
Spring Cloud Gateway
JWT handling (signing, rotation, blacklisting)
Solid understanding of:
REST API design
HTTP security headers
HTTPS/TLS protocols
Experience with relational databases such as PostgreSQL or MySQL, and ORMs like Hibernate/JPA
Familiarity with event-driven architectures using Kafka or RabbitMQ
Proficiency in Git, Maven/Gradle, Docker, and Kubernetes fundamentals
Nice to Have
Experience working with identity/authorization platforms such as Keycloak, Auth0, or Okta (as an Authorization Server)
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