As an Amazon Critical Infrastructure Engineer, you will provide full life-cycle support to AWS Data Centers from design inception through site improvement and maintenance. You will be the 'go to' engineering resource for your region when technical advice is needed, and will use your subject matter expertise and engage with diverse teams to troubleshoot, conduct Root Cause Analysis (RCA) and create Corrective Action (CA) documentation for site/equipment failures. You will directly support operational issues with ad-hoc training, complex operating procedure reviews, including critical equipment, and event support. You will own the conceptual design for existing data center upgrades and design-solutions, which add capacity, improve availability, increase efficiency and sustainability. You will interface with internal data center operations team, data center design engineering team, server hardware team, environmental health and safety team to promote standards that maintain consistency and reliability in services delivered. You will develop innovative solutions for AWS's data centers and work on concurrent projects, sometimes in multiple geographical regions. You will initiate and lead engineering audits including on-site visits within Amazon's data centers, producing reports outlining risks with recommended mitigations and remediations. You will act as resident engineer during new construction projects, supporting construction, commissioning, and turnover.