OpenSearch Administrator

DigiCert
DigiCert

Bengaluru, Karnataka, India

Posted on Jul 31, 2026

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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