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.

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