OpenSearch Administrator

Who we are DigiCert is a global leader in intelligent trust. We protect the digital world by ensuring the security, privacy, and authenticity of every interaction. Our AI-powered DigiCert ONE platform unifies PKI, DNS, and certificate lifecycle management, to secure infrastructure, software, devices, messages, AI content and agents. Learn why more than 100,000 organizations, including 90% of the Fortune 500, choose DigiCert to stop today’s threats and prepare for a quantum-safe future at www.digicert.com Job summary We are seeking an experienced OpenSearch Administrator with 3+ years of hands-on experience to join our team. The ideal candidate will be responsible for the design, implementation, maintenance, and optimization of our OpenSearch environments. You will collaborate with a global team of administrators to design, automate, build, operate, and continuously enhance the indexing services that support our customer-facing SaaS products. What you will do • Monitor cluster health, performance, and resource utilization. • Implement security best practices including authentication, authorization, and encryption. • Develop backup and recovery strategies for OpenSearch clusters. • Troubleshoot and resolve complex OpenSearch issues. • Perform cluster upgrades and patches with minimal downtime. • Optimize query performance and data indexing strategies. • Collaborate with development teams to implement efficient search solutions. • Create and maintain documentation for OpenSearch configurations and procedures. • Implement high-availability and disaster recovery solutions. • Act as a backup for other team members when necessary. • Provide on-call support and working off-hours as needed to ensure reliability and availability. • Bi-weekly rotating shifts are necessary to ensure coverage during weekends. What you will have • 3+ years of hands-on experience administering OpenSearch clusters. • Strong understanding of OpenSearch architecture and core concepts. • Experience with OpenSearch Dashboards, Logstash‑compatible pipelines, and OpenSearch Data Prepper. • Proficiency in Linux/Unix operating systems and shell scripting. • Knowledge of JVM tuning and garbage collection optimization. • Experience with monitoring tools for OpenSearch (e.g., OpenSearch Dashboards, Prometheus, Grafana). • Familiarity with containerization technologies (Docker, Kubernetes). • Strong troubleshooting and problem-solving skills. • Excellent verbal and written communication abilities. • Ability to thrive in a fast-paced environment working on projects against strict deadlines. • Ability to work collaboratively with cross-functional teams, including developers, system reliability engineers and other business units. • Ability to diagnose and troubleshoot user facing service incidents & outages. Nice to have • OpenSearch certification. • Experience with cloud‑based OpenSearch deployments (AWS OpenSearch Service, GCP, Azure). • Experience with monitoring tools and techniques (e.g., New Relic, Splunk, etc.). • Background in performance tuning for large-scale search applications. • Experience with automation or CI/CD tools, such as Terraform, Ansible, GitLab or SaltStack. Benefits • Generous time off policies. • Top shelf benefits. • Education, wellness and lifestyle support. To protect candidate information and maintain a secure hiring process, all applications must be submitted through our careers portal. Resumes or CVs sent directly via email will not be reviewed or considered. LI-SS1