job_description.job_card.job_descriptionStrong expertise in TypeScript & Node.js, including async / await, streams, and worker threads.Kafka architecture & tuning : partitioning, consumer groups, rebalancing, offset management, and schema evolution.AWS DynamoDB : data modeling, secondary indexes, TTL, streams, DAX, and best practices for large-scale design.Caching frameworks : Redis, Memcached, DAX, or CDN edge caching.Performance tuning & scalability : CPU profiling, async I / O optimization, connection pooling, and load testing.API design : REST and GraphQL, including schema federation and gateway design.Monitoring tools : Datadog, Prometheus, CloudWatch, or Splunk.DevOps awareness : CI / CD (GitHub Actions, Jenkins), container orchestration (EKS / Kubernetes), and IaC tools.