Hands-on experience with core AWS services - compute and container platforms (EKS/ECR), managed data stores (RDS/PostgreSQL, S3), event-driven messaging (SQS, EventBridge), and identity/security primitives (IAM, IRSA, KMS, Secrets Manager). Designs and delivers services across a distributed, multi-tenant platform - backend APIs, data-collection and ingestion workloads, data-pipeline jobs, and the customer-facing dashboard - that must run identically in cloud SaaS and in a customer''s own isolated AWS environment.