Senior Java Developer (Security Platform)

• Design and evolve the platform access architecture for a large-scale distributed ecosystem
• Build and maintain a unified API layer over multiple distributed services
• Implement fine-grained ABAC authorization at scale, supporting complex hierarchies and relationships
• Develop fail-closed security architectures with strict enforcement guarantees
• Manage regional compliance, data residency, and routing requirements
• Ensure consistent data visibility rules across all products and services
• Design high-performance authorization evaluation systems and policy engines
• Maintain auditability, traceability, and security transparency mechanisms
• Collaborate with platform and product teams on API and access design
• Contribute to architectural decisions and security standards
• At least 5 years of commercial software engineering experience
• Strong expertise in Java development
• Strong proficiency in Java 21+ and modern Java features, including virtual threads, NIO, and concurrent programming
• Hands-on experience building high-performance backend systems with a strong focus on scalability and low latency
• Experience working with GraalVM Native Image and optimizing Java applications for native execution
• Solid understanding of HTTP protocol internals, connection management, streaming, and API performance optimization
• Experience processing large volumes of JSON using streaming APIs and memory-efficient techniques
• Strong knowledge of performance tuning, profiling, benchmarking, and JVM optimization
• Experience designing and implementing caching strategies and cache invalidation mechanisms
• Solid understanding of authentication, authorization, and security best practices in distributed systems
• Experience building or maintaining API gateways, proxies, load balancers, service mesh components, or other infrastructure-level services
• Strong understanding of event-driven architectures and distributed systems design
• Experience writing comprehensive automated tests for performance-critical and protocol-level components
• Upper-Intermediate or higher English proficiency

WILL BE A PLUS

• Experience with Netty and high-performance networking applications
• Experience with service mesh technologies such as Istio, Envoy, or Dapr
• Hands-on experience with authorization frameworks such as OPA, Cedar, Zanzibar, or Oso
• Experience with Google Cloud Platform, including Pub/Sub, BigQuery, Memorystore, or Redis
• Experience deploying and operating applications on Kubernetes
• Familiarity with gRPC, Protocol Buffers, and HTTP/2
• Experience working in regulated domains such as Healthcare, Education, or FinTech
• Knowledge of jlink, AppCDS, CRaC, or other JVM optimization technologies

PERSONAL PROFILE

• Proactive and detail-oriented
• Thrives in collaborative environments
• Enjoys solving complex integration challenges
• Comfortable experimenting with new technologies
• Committed to improving data systems