Responsibilities

• Analyze and optimize slow or inefficient SQL and NoSQL queries across legacy systems.

• Profile and tune MySQL and Cassandra clusters for high throughput and low latency.

• Work closely with application teams to modernize schema designs and improve access patterns.

• Design database optimization strategies aligned with microservices, distributed systems, and cloud-native architectures.

• Collaborate with architects and DevOps engineers to support database migration plans to AWS.

• Implement observability and metrics around database performance, availability, and errors.

• Contribute to defining the modernization roadmap, including the potential use of cloud-native databases or managed services.

• Ensure security and data governance compliance with PCI DSS and ISO 27001 standards.

Qualifications

• 5+ years of hands-on experience as a Database Engineer, DBA, or Performance Engineer.

• Strong experience with MySQL and Cassandra in high-traffic or distributed environments.

• Expertise in query profiling, execution plans, and indexing strategies.

• Strong understanding of database internals, clustering, and replication.

• Comfortable working in Linux environments, with experience troubleshooting at the OS and DB level.

• Familiarity with cloud migration strategies and AWS RDS / Aurora / DynamoDB / OpenSearch is a plus.

• Experience working with large legacy databases and designing incremental modernization plans.

• Knowledge of data security, masking, encryption, and compliance best practices.

Data Engineer - EMEA/US Shift

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