I work for a competitor of AWS in Canada, and have had to interview candidates, so some observations that maybe might help you:
You're applying for different positions that require different skill sets, which could be sending a signal that you're not sure what you want, or that you don't have a good handle on the match between the job requirements and your skills. The Sr Edge Specialist looks like a product dev role that would require a lot of super deep networking product dev experience, whereas the Big Data architect requires 7+ yrs of data warehousing and BI experience and work with things like Hadoop. I've never seen anyone with that level of experience in both areas, and that doesn't come across in your LinkedIn profile either. On the flip side, the technical education role looks like it would've been a good fit, although they were also looking for training certification (i.e. as a trainer in general).
As others have mentioned, and given where AWS is trying to penetrate in Canada, they are probably looking for enterprise consulting experience, especially in the Sr Architect role. Can you talk to, and more importantly, do you have experience with, things like how a bank would address their risk and compliance issues, handle DR, lift-and-shift thousands of VMs at scale in to the cloud, and build corporate governance and policy around the infrastructure? In a lot of cases, you might have been edged out by folks that have that enterprise experience already, and AWS may be prioritizing that over just pure AWS knowledge.
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I work for a competitor of AWS in Canada, and have had to interview candidates, so some observations that maybe might help you:
You're applying for different positions that require different skill sets, which could be sending a signal that you're not sure what you want, or that you don't have a good handle on the match between the job requirements and your skills. The Sr Edge Specialist looks like a product dev role that would require a lot of super deep networking product dev experience, whereas the Big Data architect requires 7+ yrs of data warehousing and BI experience and work with things like Hadoop. I've never seen anyone with that level of experience in both areas, and that doesn't come across in your LinkedIn profile either. On the flip side, the technical education role looks like it would've been a good fit, although they were also looking for training certification (i.e. as a trainer in general).
As others have mentioned, and given where AWS is trying to penetrate in Canada, they are probably looking for enterprise consulting experience, especially in the Sr Architect role. Can you talk to, and more importantly, do you have experience with, things like how a bank would address their risk and compliance issues, handle DR, lift-and-shift thousands of VMs at scale in to the cloud, and build corporate governance and policy around the infrastructure? In a lot of cases, you might have been edged out by folks that have that enterprise experience already, and AWS may be prioritizing that over just pure AWS knowledge.