Trách nhiệm chính

Design and maintain high-performance microservices for petabyte-scale data storage handling millions of daily uploads.
Optimize for ultra-low latency and high throughput in system architecture.
Contribute to the direction of features such as metadata indexing, object lifecycles, and multi-region replication.
Build and operate end-to-end message backup and transfer pipelines, including upload, persistent storage, and cross-device restore.
Analyze system bottlenecks like disk I/O and network saturation, improving service quality through concurrency models and resource management.
Package, deploy, and maintain resilient containerized microservices using Docker across distributed multi-region environments.
Ensure high availability and rapid incident resolution through robust observability, including tracing, logging, and metrics.
Produce maintainable, well-tested code with an emphasis on hardware interaction awareness.
Integrate secure coding practices and manage complex authentication layers.

Yêu cầu công việc

5+ years of professional experience focusing on backend systems.
Deep mastery of Java and the Spring Boot ecosystem.
Expertise in Java concurrency models, async IO, and high-throughput networking including gRPC, HTTP/2/3, and Netty.
In-depth knowledge of under-the-hood optimizations such as epoll and zero-copy.
Strong understanding of JVM internals including memory models, advanced GC tuning (ZGC/G1GC), and thread synchronization.
Professional experience with AWS S3 or other object stores, including buckets, prefixes, and IAM/Bucket policies.
Experience with NoSQL or distributed databases and schema design for performance.
Hands-on experience with Docker, container networking, persistent storage volumes, and resource allocation.

Yêu cầu ưu tiên

Familiarity with storage engines or distributed filesystems such as MinIO, Ceph, SeaweedFS, or HDFS.
Experience with distributed message queues like Kafka and service discovery tools such as Consul or etcd.
Knowledge of consensus protocols (Raft/Paxos), replication strategies (Quorum, Erasure Coding), or CAP theorem trade-offs.
Experience building RESTful APIs with strict compatibility standards like S3-compatible layers.
Proficiency in debugging distributed systems using Prometheus, Grafana, or similar tools.

Mức lương

Hình thức làm việc

Senior Software Engineer, Java