Databases-architecture & Design-mongo Db

2 days ago

India Zensar Technologies Full time

What we currently use
- We build backend services with Java, Spring Boot, Web Services, Mongo DB
- 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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