AWS S3 Security Testing & Deployment

I need a specialist who can harden my Amazon S3 estate from end to end. The first phase is a thorough security assessment of every bucket: penetration testing to probe for exploitable paths, vulnerability... (Budget: $30 - $60 SGD, Jobs: Amazon Web Services, AWS Lambda, Cloud Security, DevOps, Internet Security, Penetration Testing, Risk Assessment, Terraform, Testing / QA, Web Security)