Platform Security Engineer

Role Overview:
The C11 Platform Security Engineer contributes to the end-to-end design, development, and enhancement of high-throughput Java microservices and reverse-proxy components within the Security Gatewayecosystem. Working closely with C12 Lead Engineers and cross-functional teams, the role focuses on building secure, scalable, and resilient security filtering and API routing components.
Key Responsibilities:
1. Security Gateway & Java Microservice Development
Java Application Engineering: Develop, test, and maintain high-performance, resilient microservices using Java (Java 11/17+), Spring Boot, Spring Security, and RESTful APIs.
Security Gateway Implementations: Support reverse-proxy and gateway integrations (e.g., PingAccess, OpenShift/ECS container services) to secure Green Network (GRN) enterprise application traffic.
Authentication & Federation Support: Assist in implementing modern authentication protocols (SecureSSO, OIDC, OAuth 2.0, COIN tokens) and participate in migrating legacy security protocols (e.g., SiteMinder to OIDC/COIN).
API Routing & Fault Tolerance: Configure and maintain routing downstream from API Gateways (Apigee / APIM), integrating service discovery (Eureka/CCP) and implementing resilience patterns (resilience4j/circuit breakers, retries, and rate limiters).
2. Software Lifecycle, Quality & Code Execution
Full Development Lifecycle: Participate actively in all phases of the Agile SDLC (sprint planning, daily standups, backlog refinement, and retrospectives).
Code Quality & Testing: Write clean, modular, and maintainable Java code adhering to SOLID principles; build comprehensive unit, integration, and contract tests utilizing JUnit, Mockito, and test containers.
Root Cause Analysis & Defect Remediation: Investigate, debug, and resolve application bugs, performance bottlenecks, and runtime errors in non-production and production environments.
CI/CD & DevOps Integration: Build and manage automated build/deploy pipelines using Git, Maven/Gradle, and enterprise CI/CD tools (e.g., Tekton/Lightspeed, Bitbucket/GitHub, OpenShift).
3. Security, Risk & Collaboration
Secure Coding & Vulnerability Remediation: Ensure all developed code complies with enterprise security benchmarks (SonarQube, Snyk, Checkmarx, MCD scans) and remediate identified vulnerabilities promptly.
Peer Reviews & Collaboration: Actively participate in peer code reviews, contribute to technical documentation, and collaborate effectively with quality assurance, architecture, and platform operations teams.
Risk & Controls Adherence: Adhere to Citi’s technology risk and governance policies, applying sound judgment to safeguard firm assets and data.
4. Recommended Qualifications & Education (C11 Level)Recommended Qualifications:
5–8 years of hands-on software development experience with enterprise Java applications.
Strong proficiency in Java (Java 11/17+), Spring Boot, Spring Security, and microservices architecture.
Solid understanding of REST APIs, HTTP/HTTPS protocols, mutual TLS (mTLS), and web security standards (OWASP Top 10).
Working knowledge of authentication/authorization protocols such as OAuth2, OpenID Connect (OIDC), JWT, and SAML.
Practical experience working with containerized environments (Docker, Kubernetes / Red Hat OpenShift).
Experience with relational/NoSQL databases, SQL querying, and database connection pooling.
Hands-on experience with automated testing tools (JUnit, Mockito) and CI/CD tools (Git, Maven/Gradle, Jenkins/Tekton).
Good problem-solving, analytical, and debugging skills with distributed systems.
Strong verbal and written communication skills with the ability to articulate technical issues clearly in an Agile team setup.
Education:
Bachelor’s/University degree in Computer Science, Information Technology, Engineering, or equivalent practical experience.
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Job Family Group: Technology
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Job Family:Digital Software Engineering
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Time Type:Full time
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Most Relevant Skills Please see the requirements listed above.
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Other Relevant Skills For complementary skills, please see above and/or contact the recruiter.
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