Experienced Java/Spring Developer Work (AWS Lambda/DynamoDB, SQL Server & REST APIs)

We're looking to hire an experienced Java developer, to help us make some improvements on an existing codebase that synchronizes 2 systems, one with a SQL Server database and a REST-based SaaS, with a REST API. Is working will, but need to make some improvements and new features.
Project will require experience with AWS Lambda/DynamoDB, SAM, and working with standard REST APIs.