About the position
We are the core middleware engineering team (Zoom Async Team), responsible for building and maintaining the mission-critical backend infrastructure that powers the entire company. Our team designs and develops self-developed, high-performance middleware systems, including AsyncMQ, AsyncSearch, AsyncFile, AsyncNotification etc. These systems form the foundation of over 400+ business services across the organization. We leverage cutting-edge technologies to deliver common shared backend platforms with high performance, high availability and high controllability, providing robust and reliable support for massive-scale data and service operations.
Responsibilities
- Design, develop, and optimize Java-based microservices that form the building blocks of our self-hosted middleware solutions.
- Build and operate high-throughput Async File system.
- Integrate and optimize cloud storage platforms including AWS S3, DynamoDB, and OCI.
- Deploy, monitor, and scale services in Kubernetes (K8s) environments.
- Tune system and application performance; diagnose and resolve performance bottlenecks.
- Set up and maintain comprehensive monitoring, alerting, and observability using APM tools and Linux-based diagnostics.
- Collaborate with other backend teams to improve infrastructure reliability and developer efficiency.
Requirements
- Strong expertise in Java backend development, especially in microservices architecture.
- Familiar with Spring Boot, RESTful APIs, and distributed systems patterns.
- Hands-on experience with AWS (S3, DynamoDB) and Oracle Cloud Infrastructure (OCI).
- Deep knowledge of Elasticsearch, including query tuning and cluster management.
- Proficient in Kubernetes, containerization, and service orchestration.
- Strong understanding of communication protocols: TCP, HTTP, HTTP/2, WebSocket.
- In-depth knowledge of JVM internals, garbage collection tuning, and performance profiling.
- Experience with APM tools (e.g., Prometheus, Grafana, SkyWalking, or similar).
- Comfortable working in Linux environments, proficient with Shell scripting.
- Solid foundation in common data structures, algorithms, and software design patterns.
- Strong sense of code quality and best practices, with a passion for writing elegant and maintainable code.
- Proven ability to diagnose complex production issues under pressure.
Nice-to-haves
- Mandarin Chinese language – a plus for cross-regional collaboration.
Benefits
- Comprehensive benefits program to support physical, mental, emotional, and financial health.
- Support for work-life balance.
- Opportunities to contribute to the community.
