I feel , I can full fill your requirement , having bellow skill more than 12+ years experience.
Spring boot , gitlab and Amazon (S3, EC2, SQS, SNS, Lambda function, DynamoDB, X-Ray, I am Role based, Athena Query, Parameter store, secret manager, KSQL),
Google App Engine, Elasticsearch, SERVLETS, JSP, JMS, JDBC, XML, LaunchDarkly feature management API.