NoSQL Database Engineer

We are seeking a Senior NoSQL Database Engineer with deep expertise in Apache Cassandra and working knowledge of MongoDB

The ideal candidate is passionate about designing and maintaining resilient, highavailability, distributed data systems, and ensuring zero-downtime performance in production environments

Role & responsibilities

1. Installation & Provisioning

• Plan, install, and configure new

  Cassandra clusters

  from scratch across development, staging, and production environments.
• Automate provisioning using

  Infrastructure-as-Code (IaC)

  tools such as

  Terraform

  or

  Ansible

  .
• Validate environment prerequisites, including

  OS tuning, JVM configuration, port management, and security settings

  .
• Design for

  high availability

  and resilience using proper

  replication

  and

  data partitioning

  strategies.

2. Cluster Management & Scaling

• Create and manage

  multi-node Cassandra clusters

  with optimal replication and consistency settings.
• Scale clusters by

  adding or removing nodes

  seamlessly without downtime; manage

  token assignments

  and

  ring balancing

  .
• Oversee

  data distribution, repair operations, compactions

  , and

  load balancing

  across nodes.
• Plan and execute

  cluster upgrades and patches

  with minimal disruption.

3. Performance Tuning & Optimization

• Monitor cluster performance metrics

  latency, throughput, GC behavior, disk I/O, and heap utilization

  .
• Collaborate with development teams to optimize

  schema design

  and

  query performance

  .
• Fine-tune

  JVM parameters, caching

  , and

  compaction strategies

  for optimal throughput.
• Identify and mitigate performance bottlenecks using

  nodetool

  ,

  JMX

  , and

  Grafana

  dashboards.

4. Backup, Restore & Disaster Recovery

• Implement

  automated backup and restore

  strategies using tools like

  nodetool snapshot

  or

  Medusa

  .
• Validate

  backup integrity

  through periodic recovery drills.
• Define and maintain

  disaster recovery (DR) plans

  with tested

  RTO/RPO

  objectives.

5. Monitoring & Maintenance

• Set up continuous monitoring using

  Prometheus

  ,

  Grafana

  , or

  OpsCenter

  .
• Configure alerts for key cluster health indicators

  node status, compaction, heap usage, disk utilization, dropped mutations

  , etc.
• Participate in

  on-call rotations

  for production support and incident response.
• Conduct

  root cause analysis (RCA)

  and drive

  preventive maintenance

  for recurring issues.

6. Security & Compliance

• Implement and maintain

  role-based access control (RBAC)

  and secure

  authentication mechanisms

  .
• Enable

  TLS/SSL encryption

  for data-in-transit and data-at-rest.
• Perform regular

  audits

  ,

  credential rotations

  , and ensure compliance with organizational and regulatory standards.

Required Skills :

• At least 5 years of hands-on experience managing Cassandra in production environments.
• Strong knowledge of Cassandra internals gossip, token distribution, consistency, repair, and compaction
• Proven experience with database provisioning, scaling, and upgrades
• Proficient in Linux systems and scripting (Bash or Python)
• Experience with data replication, backup, and recovery automation
• Familiarity with cloud platforms (AWS/GCP/Azure) for distributed Cassandra deployments
• Good understanding of database security, encryption, and auditing.
• Effective communication and problem-solving skills.

Preferred (Nice to Have) :

• Experience with MongoDB as a complementary NoSQL database
• Familiarity with Terraform, Ansible, or Kubernetes for automation and containerized deployments
• Exposure to Elasticsearch, Kafka, or other distributed systems
• Hands-on with CI/CD pipelines for database release management
• Knowledge of Prometheus, Grafana, or OpsCenter for performance visualization.