Seeking DevOps Expert for Cost-Efficient Migration and Deployment from AWS to Alternative Cloud Platform

I am seeking a DevOps engineer to assist in migrating my entire AWS setup to a new platform, such as DigitalOcean or GCP. This includes transferring two databases, ensuring data integrity during the move. Additionally, I have a front-end application built with Angular Universal and a back-end application developed using Java Spring Boot, both currently deployed on EC2 with a load balancer. These applications need to be shifted to the new platform efficiently and securely, incorporating protection against DDoS attacks, for instance. Furthermore, an S3 bucket with its content requires migration. An Angular application, presently on CloudFront, must also be deployed on the new system. The final step involves linking the domain and SSL certificate to the new setup. I am looking for someone who can conduct a thorough analysis and propose the most cost-effective migration and deployment strategy. My current expenditure on AWS is approximately $800/month, and I aim to reduce this to around $200/month. If you have the necessary skills and experience in DevOps, cloud platforms, and AWS services, and can efficiently migrate and deploy projects while ensuring cost-efficiency, we would love to hear from you. Please include examples of previous projects and your relevant certifications in your proposal.