{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": "s3:ListBucket",
            "Principal": "*",
            "Resource": "arn:aws:s3:::<YOUR-BUCKET-NAME-HERE>",
            "Condition": {
                "StringEquals": {
                    "aws:RequestedRegion": "us-east-1"
                },
                "DateGreaterThan": {
                    "aws:CurrentTime": "2020-06-18T00:00:00Z"
                },
                "IpAddress": {
                    "aws:SourceIp": "x.x.x.x/32"
                },
                "DateLessThan": {
                    "aws:CurrentTime": "2021-10-30T23:59:59Z"
                }
            }
        },
        {
            "Effect": "Allow",
            "Principal": "*",
            "Action": [
                "s3:PutObject",
                "s3:GetObject",
                "s3:DeleteObject"
            ],
            "Resource": "arn:aws:s3:::<YOUR-BUCKET-NAME-HERE>/Engineering/${aws:username}/*",
            "Condition": {
                "StringEquals": {
                    "aws:RequestedRegion": "us-east-1"
                },
                "DateGreaterThan": {
                    "aws:CurrentTime": "2020-06-18T00:00:00Z"
                },
                "IpAddress": {
                    "aws:SourceIp": "x.x.x.x/32"
                },
                "DateLessThan": {
                    "aws:CurrentTime": "2021-10-30T23:59:59Z"
                }
            }
        },
        {
            "Effect": "Allow",
            "Principal": "*",
            "Action": "s3:PutObject",
            "Resource": "arn:aws:s3:::<YOUR-BUCKET-NAME-HERE>/*",
            "Condition": {
                "StringEquals": {
                    "s3:x-amz-server-side-encryption": "AES256"
                },
                "IpAddress": {
                    "aws:SourceIp": "x.x.x.x/32"
                }
            }
        }
    ]
}