SRE/Senior Operations

Responsibilities 1. Cloud Platform and Infrastructure Management - Responsible for the design, deployment, and daily operations of production environments on AWS / Alibaba Cloud / Huawei Cloud (at least two), ensuring core business high availability (over 99.95%). - Lead hybrid cloud or multi-cloud network architecture planning, including VPC interconnection, dedicated line access, and cross-availability zone disaster recovery design. - Continuously promote cloud resource cost optimization, achieving quantifiable cost reduction through reserved instances, elastic scaling, resource governance, and other means. 2. Kubernetes and Container Platform - Experience in deploying self-built or managed K8s clusters from 0 to 1, familiar with production-level operations such as control plane high availability, etcd backup and recovery, and certificate rotation. - Responsible for technical support and promotion of business containerization transformation, formulating container resource specifications (Request/Limit, Pod anti-affinity, security context, etc.). - Maintain cluster multi-tenant isolation policies (Namespace, ResourceQuota, NetworkPolicy, OPA/Gatekeeper). 3. Observability System (Prometheus + ELK) - Design and maintain a monitoring and alerting system based on Prometheus + Grafana + Alertmanager, writing high-value alert rules to reduce false positive rates. - Responsible for the cluster deployment of the ELK / EFK log platform, index lifecycle management, and the implementation and optimization of log alerts (ElastAlert or Kibana Alerting). 4. Middleware Operations - Responsible for the cluster deployment, tuning, and troubleshooting of core middleware such as Kafka / Zookeeper / etcd / Redis. - Familiar with middleware security hardening, including but not limited to TLS encrypted transmission, SASL/SCRAM authentication, and ACL permission control. 5. CI/CD and Release Engineering - Lead or deeply participate in CI/CD pipeline design, familiar with tools such as Jenkins / GitLab CI / GitHub Actions. - Promote GitOps release model (ArgoCD / FluxCD), achieving automated deployment and rollback across multiple environments (development / testing / production). 6. Collaboration and Documentation - Write high-quality technical documentation, incident review reports, and operational SOPs, and promote team knowledge accumulation. - Efficiently communicate with development, testing, and product teams during incident handling and architecture reviews, using data to drive decisions. Requirements Hard Requirements - Full-time bachelor's degree or above in a computer-related field. - Over 3 years of production environment operations or SRE experience, with at least 1 year focused on cloud-native technology stack. - Familiar with at least two mainstream public clouds (AWS, Alibaba Cloud, Huawei Cloud), understanding the core IaaS/PaaS product differences. - Practical experience in building production-grade Kubernetes clusters from 0 to 1, able to clearly describe the reasons for architectural choices. - Proficient in deploying and maintaining Prometheus monitoring systems, having written custom Exporters or complex PromQL alert rules is a plus. - Experience in building, tuning, and log alerting of ELK clusters, capable of handling TB-level log volumes. - Familiar with the cluster deployment and troubleshooting of at least three middleware such as Kafka, Redis, etcd, with practical experience in security encryption preferred. - Proficient in using at least one CI/CD tool and participating in pipeline design and implementation. Soft Requirements - Good communication skills, able to explain technical issues to non-technical parties regarding impact and action plans. - Habit of documenting knowledge, understanding BPD (Blameless Postmortem) culture. - Strong problem-driven and self-motivated, able to proactively drive improvements from operational pain points. Bonus Points - Holder of Hong Kong identity or eligible to apply for Hong Kong entry visa. - Holder of CKA / CKAD / CKS certification. - Holder of one of the following certificates: AWS SAA / SAP, Alibaba Cloud ACP / ACE, Huawei Cloud HCIE. - Experience contributing to open-source projects or technical blogs/sharing. - Familiar with either Golang or Python, able to develop simple automation tools or Operators.