Database Administrator

Posted 01 September 2025
LocationCity of London
Job type Contract
Discipline TechnologyCommodities and Financial Services

Job description

​We're looking for a Database Administrator!

If you have:

  • 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.

Skills :

  • 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 analyse logs, metrics, and connector configurations to identify root causes of issues.

  • Strong documentation and communication skills for delivering technical assessments.

Edge :

  • MongoDB Certified DBA Associate or higher.

  • Exposure to containerised environments (Docker, Kubernetes) and Infrastructure as Code (Terraform, etc.).

  • RedHat Certifications concerning Kafka or Debezium

Apply now!