Oracle DBA SME

About the Role We are seeking a highly experienced Database - Subject Matter Expert (SME) with hands-on expertise in database administration, performance optimization, high availability, observability and automation in large-scale distributed environments. Experience working in the Telecommunication domain handling high-volume, real-time data, event-driven architectures, provisioning systems, billing systems or network management systems is a strong advantage. This role will manage and optimize mission-critical databases that support telecom-grade workloads with strict SLAs, low latency and high reliability.

Primary Responsibilities

● Administer, monitor and optimize production database systems (MySQL, MariaDB, MongoDB, MongoDB Atlas, Oracle, AWS RDS).

● Perform installation, configuration, patching, upgrades, clustering and replication.

● Automate schema/version changes using Liquibase.

● Ensure high availability, replication, failover, and multi-region deployments.

● Plan and execute backup, restore, and disaster recovery strategies.

● Troubleshoot critical performance issues, slow queries, deadlocks, replication failures.

 ● Optimize performance across queries, indexing, caching, memory, and storage.

● Deploy and manage containerized database workloads using Docker and Kubernetes.

● Integrate and operate distributed systems like Redis/Elastic Cache, ETCD, RabbitMQ, AMQ, Kafka.

● Build automation using Shell/Python scripting and tools like Ansible/Terraform.

 ● Implement proactive monitoring and alerting with New Relic, Grafana and other APM/logging systems.

● Generate performance dashboards, trend analysis and optimization recommendations.

● Work closely with application teams on schema design, indexing and query tuning.

● Maintain strong database security, auditing, encryption, RBAC and compliance (GDPR/HIPAA/SOC2).

● Prepare documentation, runbooks, architecture diagrams and troubleshooting guides.

● Participate in 24x7 on-call rotation. Required Skills & Qualifications

● 10+ years of experience in database engineering and administration.

 ● Hands-on administration experience with: ○ MySQL, MariaDB, MongoDB, MongoDB Atlas, Oracle, AWS RDS ○ Schema/version management: Liquibase

● Strong SQL and NoSQL fundamentals. ● Experience with distributed caching and message queues: ○ ETCD, Redis, Elastic Cache, RabbitMQ, AMQ, Kafka

● Experience with New Relic and Grafana for monitoring, alerting, dashboarding, performance insights.

● Strong Linux, networking, system tuning expertise.

● Advanced performance tuning and query optimization skills.

● Automation experience: Ansible and Terraform.

 ● Experience with CI/CD pipelines and containerized DB deployments.

● Excellent problem-solving, troubleshooting, and RCA skills.

● Strong communication and documentation ability.

Nice to Have ● Experience with Elastic or other observability stacks.

 ● Cloud certifications (AWS/GCP/Azure).

● Experience building internal automation tools or monitoring frameworks.

What You Can Expect

● A culture focused on innovation, learning, and technical depth.

● Work with skilled engineers, architects, DevOps and SRE teams.

● Opportunities to build and optimize high-availability, enterprise-grade systems.

● Ownership of modernizing and scaling critical data platforms.

About Nomiso:

Nomiso is a product and services engineering company. We are a team of Software Engineers, Architects, Managers, and Cloud Experts with expertise in Technology and Delivery Management. 

Our mission is to Empower and Enhance the lives of our customers, through efficient solutions for their complex business problems. 

At Nomiso we encourage entrepreneurial spirit - to learn, grow and improve. A great workplace, thrives on ideas and opportunities. That is a part of our DNA. We're in pursuit of colleagues who share similar passions, are nimble and thrive when challenged. We offer a positive, stimulating and fun environment – with opportunities to grow, a fast-paced approach to innovation, and a place where your views are valued and encouraged.

We invite you to push your boundaries and join us in fulfilling your career aspirations

We are an equal opportunity employer and are committed to diversity, equity, and inclusion. We do not discriminate on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability status, or any other protected characteristics.