DATABASES-Engineering-Mongo DB

5 days ago

India Zensar Technologies Full time ₹ 9,00,000 - ₹ 12,00,000 per year

What we currently use

  • We build backend services with Java, Spring Boot, Web Services, Mongo DB
  • We integrate with existing core Java Cargo applications via REST APIs
  • We build frontends with Angular and Ionic framework for mobile apps
  • We deploy to Linux servers, private datacenters, AWS, using Ansible & Maven
  • We do continuous integration with Gitlab/Bamboo
  • We use Scrum to organize ourselves

What we expect from you

  • Bachelor's Degree in Information Technology, Computer Science, Computer Engineering, or equivalent
  • Proven experience as a MongoDB DBA or similar role (4+ years recommended)
  • Strong understanding of MongoDB architecture, including sharding, replication, and indexing
  • Experience working with MongoDB Atlas or self-managed clusters
  • Proficiency with Linux systems and shell scripting
  • Familiarity with monitoring tools and performance tuning techniques
  • Experience with backup and disaster recovery processes
  • Review the current Debezium deployment architecture, including Oracle connector configuration, Kafka integration, and downstream consumers.
  • Analyze Oracle database setup for CDC compatibility (e.g., redo log configuration, supplemental logging, privileges).
  • Evaluate connector performance, lag, and error handling mechanisms.
  • Identify bottlenecks, misconfigurations, or anti-patterns in the current implementation.
  • Provide a detailed report with findings, best practices, and actionable recommendations.
  • Optionally, support implementation of recommended changes and performance tuning.

What we require from you

  • 4+ years of experience as a MongoDB DBA in production environments
  • Deep expertise in MongoDB architecture, including replication, sharding, backup, and recovery
  • Strong hands-on experience with Debezium, especially the Oracle connector (LogMiner).
  • Deep understanding of Oracle internals relevant to CDC: redo logs, SCNs, archive log mode, supplemental logging.
  • Proficiency with Apache Kafka and Kafka ecosystem tools.
  • Experience with monitoring and debugging Debezium connectors in production environments.
  • Ability to analyze logs, metrics, and connector configurations to identify root causes of issues.
  • Strong documentation and communication skills for delivering technical assessments.

What could give you an edge

  • MongoDB Certified DBA Associate or higher.
  • Exposure to containerized environments (Docker, Kubernetes) and Infrastructure as Code (Terraform, etc.).
  • RedHat Certifications concerning Kafka or Debezium

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