Add a principal version of the existing job post.

Author: josh-padnick

pages/careers/_open-positions.html

@@ -12,6 +12,7 @@ <h2 class="bold">Open Positions</h2>
 
     <h3>Software Engineering</h3>
     <ul>
+      <li><a href="#senior-software-engineer">Principal Software Engineer - AWS Infrastructure as Code Library/Platform (US time zones)</a></li>
       <li><a href="#senior-software-engineer">Senior Software Engineer - AWS Infrastructure as Code Library/Platform (US time zones)</a></li>
       <li><a href="#senior-software-engineer-brand-new-product">Senior Software Engineer - New Product (EU time zones)</a></li>
       <li><a href="#senior-software-engineer-contract-part-time">Senior Software Engineer (Contract/Part-Time) - Infrastructure as Code Library, US time zones</a></li>
@@ -21,12 +22,13 @@ <h3>Software Engineering</h3>
 
     <h2>Software Engineering</h2>
 
+    <h3 id="principal-software-engineer" style="margin-top: 5px; margin-bottom: 5px">Principal Software Engineer - AWS Infrastructure as Code Library &amp; Platform</h3>
     <h3 id="senior-software-engineer" style="margin-top: 5px; margin-bottom: 5px">Senior Software Engineer - AWS Infrastructure as Code Library &amp; Platform</h3>
     <div style="background-color:#2e3b4a; padding:4px 6px; border-radius: 10px; display:inline-block; font-size:14px;"><strong>Time Zone:</strong> US time zones</div>
 
     <h4>About this role</h4>
 
-    <p>Gruntwork delivers an end-to-end, best-practices infrastructure on AWS in just days, all as a product. We're known world-wide for DevOps thought leadership, and for our popular open source tools, Terragrunt and Terratest. In this role, you’ll collaborate with other senior engineers to define the next generation of AWS and DevOps best practices, codify them for use by thousands of engineers, and design a next-level experience for implementing, operating and understanding them.</p>
+    <p>Gruntwork delivers an end-to-end, best-practices infrastructure on AWS in just days, all as a product. We're known world-wide for DevOps thought leadership, and for our popular open source tools, Terragrunt and Terratest. In this role, you’ll collaborate with other senior-level engineers to define the next generation of AWS and DevOps best practices, codify them for use by thousands of engineers, and design a next-level experience for implementing, operating and understanding them.</p>
 
     <h4>What you'll work on</h4>
     <ul>