Justin Yancey
Senior Systems Development Engineer at The DevOps Machine
Seattle, Washington, United States
Summary
👤
Senior🎓
Top SchoolJustin Yancey is a Senior Systems Development Engineer with nine years of deep automation and Windows/Unix systems experience, currently building large-scale operational tooling at AWS in Seattle. He specializes in PowerShell DSC, credential and identity services, and has designed platforms that manage thousands of Windows hosts, eliminate hard-coded secrets, and enable device identity via X.509-backed OpenID Connect. Justin blends hands-on engineering with operational excellence—mentoring teams, rescuing stalled projects, contributing to AWS open-source libraries (notably improving API Gateway Lambda authorizers), and filing multiple patents. His background spans orchestration tools (Cisco, BMC), database development (Oracle, SQL Server), and infrastructure automation across VMware and NetApp SANs. He also runs a Windows-focused DevOps consultancy, bringing an operator’s pragmatism to secure, testable, and standards-driven automation. Beyond the obvious, he has a track record of improving team coding standards and delivering one-click QuickStarts that simplify complex PKI and Active Directory deployments.
9 years of coding experience
7 years of employment as a software developer
Masters, Information Technology, Masters, Information Technology at University of Technology Sydney
Github Skills (9)
aws-lambda10
asp-net-core10
csharp10
xunit10
dotnet-core10
testing10
aws9
serverless9
netcore9
Programming languages (7)
Github contributions (5)
aws/aws-lambda-dotnet
Jan 2017 - Jul 2020
Libraries, samples and tools to help .NET Core developers develop AWS Lambda functions.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 commits, 7 PRs, 5 comments in 3 years 7 months
Contributions summary:Justin primarily refactored and enhanced the `APIGatewayProxyFunction` class within the project, extracting request processing logic into reusable functions. They introduced custom authorizer classes and tests, improving the project's security and authorization capabilities. The user's work included modifying exception handling to provide more informative error messages, including enhanced output for AggregateExceptions and TypeLoadExceptions. Moreover, the user corrected and adjusted test logic, particularly related to logging, ensuring consistent behavior with the Lambda Logger.
dotnetlambda-functionsaws-lambdaserverlessnet-core
awslabs/aws-alb-identity-aspnetcore
Nov 2019 - Jul 2022
Identity Middleware for ASP.NET Core web applications running behind an Application Load Balancer (ALB) configured with the OpenID Connect authentication feature.
Contributions:5 commits, 1 push in 2 years 8 months
identityasp-netnet-coreoauth2application-load-balancer
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