SME Database Administrator

7 days ago

Hyderabad, India Cozzera Full time

Job Title: SME Database AdministratorExperience: 10+ YearsLocation: Onsite – HyderabadAbout the RoleWe are seeking an experienced Database SME (Oracle + MongoDB/MariaDB) with deep expertise in administering mission-critical, high-volume, distributed database environments—ideally in the telecom domain. This role requires mastery of SQL/NoSQL systems, performance tuning, automation, and building highly available architectures across hybrid or cloud-native infrastructures.Key ResponsibilitiesDatabase Administration & Optimization- Administer Oracle DBA, MySQL, MariaDB, MongoDB, and AWS RDS environments.- Handle installation, configuration, patching, upgrades, and version migration.- Optimize performance including slow queries, indexing, sharding, replication tuning, and resource usage.High Availability & Recovery- Set up and manage clustering, replication, failover, multi-region DR, and backups.- Ensure HA using Oracle RAC, MongoDB ReplicaSets, MariaDB Galera clusters, etc.Automation & DevOps- Implement schema versioning automation using Liquibase.- Deploy and manage DB workloads in Docker/Kubernetes.- Automate operations through Ansible, Terraform, and CI/CD pipelines.Monitoring & Troubleshooting- Monitor using New Relic, Grafana, Prometheus, CloudWatch, and APM tools.- Troubleshoot replication failures, bottlenecks, memory issues, IOPS constraints, connection pool saturation, etc.Distributed Systems Integration- Integrate DB systems with Kafka, Redis, RabbitMQ, ETCD, Elastic Cache.- Work in real-time, high-throughput systems typical in telecom domains.Security & Compliance- Implement RBAC, encryption, auditing, TLS certificates, password rotation, compliance controls.Operational Support- Participate in 24x7 on-call rotation for critical incidents.- Create documentation, dashboards, SOPs, and architecture diagrams.Requirements- 10+ years of expertise in database engineering and administration.- Deep experience with Oracle DBA (mandatory) + MongoDB or MariaDB (mandatory).- Strong understanding of SQL, NoSQL, replication, and performance tuning.- Strong Linux systems expertise.- Proficiency in scripting languages: Shell, Python.- Experience with CI/CD, containerized databases, and infra automation.- Excellent communication and troubleshooting abilities.Nice to Have- Experience with Elastic Stack, Kafka pipelines, or internal tooling.- Cloud certifications (AWS/Azure/GCP).- Experience building automated database management tools.

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