Database Engineer

Role: MongoDB with Debezium Architect Location: London, UK Contract role (Inside IR35) Contract Length: Initially 3-6 months Mandates: MongoDB, Debezium, Architecture exp., Individual Contribution What we expect 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 analyze 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 containerized environments (Docker, Kubernetes) and Infrastructure as Code (Terraform, etc.). RedHat Certifications concerning Kafka or Debezium Job Type: Fixed term contractContract length: 6 months Experience: MongoDB DBA : 4 years (required) Debezium: 4 years (required) MongoDB architecture: 3 years (required) Apache Kafka and Kafka ecosystem tools: 3 years (required)