NoSQL Database Administrator ( DBA )

Job Description : NoSQL Database Administrator (DBA)
Job Location: Mumbai / Navi Mumbai
Work Type: Work from office (sometime extended working hours)
Education: A Bachelors degree in Computer Science, Information Technology, or related fields is preferred, or equivalent work experience.

Position Overview
We are seeking a talented NoSQL Database Administrator (DBA) to join our growing team. The ideal candidate will be responsible for the deployment, management, performance tuning, and optimization of NoSQL databases. As a NoSQL DBA, you will ensure the stability, integrity, and security of NoSQL environments, including databases like MongoDB, Cassandra, Couchbase, Redis, Maria DB & Elasticsearch. You will alsowork closely with development, DevOps, and engineering teams to support high-availability and scalable applications.

Experience
3-8 years of experience in managing and administering NoSQL databases (e.g., MongoDB, Cassandra, Redis, Couchbase, Maria DB & Elasticsearch).
Experience in scaling and managing large-scale NoSQL deployments in a production environment.
Proven track record of performance tuning, troubleshooting, and optimizing NoSQL databases.
Strong knowledge of replication, sharding, and clustering technologies in NoSQL systems.

Key Responsibilities
NoSQL Database Management
Performance Tuning and Optimization
Backup and Disaster Recovery
Replication, High Availability, and Scalability
Capacity Planning and Resource Management
Security Management
Collaboration with Development and DevOps Teams
Documentation and Reporting
Troubleshooting and Resolution
Managing and Reporting tikets SLA
Preparing RCA

o Design, implement, and manage NoSQL databases (e.g., MongoDB, Cassandra, Redis, Couchbase, Maris DB & Elasticsearch).
o Set up, configure, and maintain NoSQL database clusters and instances.
o Ensure the availability, reliability, and performance of NoSQL database systems in production environments.
o Troubleshoot, diagnose, and resolve NoSQL database issues, including replication, performance, and connectivity problems.
o Perform routine database maintenance, including backups, upgrades, and patching.
o Manage database security (authentication, access control, encryption, etc.) and data privacy.
o Monitor the performance of NoSQL databases, identify bottlenecks, and optimize queries, indexes, and storage.
o Work closely with development teams to optimize schema design and ensure efficient data storage and retrieval.
o Implement automated monitoring and alerting for system health and performance issues.
o Tune database configuration settings (e.g., memory, disk I/O) to maximize database performance and scalability.
o Implement and manage backup and recovery strategies to ensure data protection and minimize downtime.
o Automate and test disaster recovery plans for various NoSQL databases.
o Ensure regular testing and validation of backup processes to ensure data integrity.
o Configure and manage replication and clustering features for high availability (HA) and disaster recovery (DR).
o Implement and manage horizontal and vertical scaling solutions to accommodate high-traffic applications.
o Ensure data consistency and availability across distributed NoSQL databases.
o Maintain and troubleshoot replication latency, failover, and consistency issues.
o Perform capacity planning to ensure that NoSQL database systems can handle increasing data volumes and traffic loads.
o Forecast resource utilization (CPU, memory, storage) and plan upgrades or scaling strategies accordingly.
o Optimize storage by managing data distribution, compression, and cleanup strategies for large datasets.
o Implement and enforce security best practices, including user authentication, role-based access control (RBAC), and data encryption.
o Monitor and audit access logs for suspicious activity and ensure compliance with security policies.
o Configure and manage secure communication (e.g., TLS/SSL) between database nodes and clients.
o Collaborate with application developers to design efficient data models and schemas suited for NoSQL databases.
o Provide database-related support and guidance to development teams, especially for application performance optimization.
o Work closely with DevOps to deploy and automate NoSQL database systems, including configuration management, monitoring, and maintenance tasks.
o Maintain accurate and up-to-date documentation for database configurations, schemas, backup processes, and disaster recovery plans.
o Generate regular performance reports and provide insights into database health, bottlenecks, and system usage trends.
o Document and communicate changes to the database structure, configuration, or maintenance schedules to relevant teams.

Tools and Technologies
Experience with containerization technologies like Docker and orchestration tools like Kubernetes for deploying NoSQL clusters.
Familiarity with CI/CD pipelines for automating database deployment and updates.
Experience with backup and restore tools like WAL-G, Percona XtraBackup for NoSQL solutions, or built-in database backup utilities.
Experience with database backup, restoration, and disaster recovery procedures.
Strong skills in scripting languages (e.g., Bash, Python, or shell scripting) for automating database tasks.
Familiarity with monitoring and alerting tools such as Prometheus, Grafana, or Datadog.