running SSIS package with AWS CLI in SQL job

I have a SSIS ETL package with a process task that transfer files to AWS S3 through a AWS CLI command:

aws.exe s3 cp C:\folder s3://bucket_name/folder --recursive --exclude "*" --include "*.pdf"

If I run this ETL in visual studio the files get transfer to S3 fine.  If I run this ETL as a SQL job on the machine it does not work (no error.  the files do not get transfer).  Apparently the SQL job is unable to pick up the AWS credential.

I already have the AWS credential (access key and secret access key) setup in a service account on this machine.  In the SQL job, SSIS package is "run as" a proxy account of this service account.  The proxy is active on SSIS and cmd.  Any ideas?  Thanks.

I have SQL Server 2014 and AWS CLI v2.