Christopher Radek
Senior Software Engineer at Microsoft
Seattle, Washington, United States
Summary
🤩
Rockstar🎓
Top SchoolChristopher Radek is a Senior Software Engineer with a decade of experience building developer tools and APIs, currently focused on improving distributed application observability with AWS X-Ray. He was a core maintainer and redesign lead of the AWS SDK for JavaScript (including v3 in TypeScript), and has a track record of shipping modular, performance-minded libraries used across browser and Node.js environments. Christopher has held senior engineering and management roles at Microsoft, Twilio, and AWS, blending hands-on implementation with product-facing troubleshooting and prioritization. An active open-source maintainer, his contributions span prominent repos like aws-sdk-js, aws-sdk-js-v3, and Segment’s analytics libraries, including work on xml-builder and X-Ray Node SDK stability. He pairs strong API/library design skills with practical experience across TypeScript, JavaScript, Node.js, Java, and Dart, and brings a scientist’s background in genomics that informs a data-driven approach to problem solving. Based in Seattle, he frequently collaborates directly with users to turn real-world debugging pain points into durable platform features.
10 years of coding experience
13 years of employment as a software developer
East Leyden High SchoolB.S. Microbiology and Molecular Genetics/Genomics, B.S. Microbiology and Molecular Genetics/Genomics at Michigan State University
Github Skills (29)
compatible10
javascript10
testing10
jes10
typescript10
analytics10
browser-support10
aws-sdk10
sdk10
jestjs10
typescript-types10
jtest10
management10
version-control10
xml10
Programming languages (14)
Github contributions (5)
aws/aws-sdk-js
Sep 2015 - Oct 2018
AWS SDK for JavaScript in the browser and Node.js (In Maintenance Mode, End-of-Life on 09/08/2025). The AWS SDK for JavaScript v3 in the browser and Node.js is available here: https://github.com/aws/aws-sdk-js-v3
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 releases, 663 commits, 310 PRs in 3 years 1 month
Contributions summary:Christopher primarily focused on implementing features for the REST JSON protocol and fixing bugs in the AWS SDK for JavaScript. This included modifications to DELETE requests, and addressing issues related to handling typed arrays in the browser environment. The user also fixed a Lambda test to check the correct error type. Further efforts were made for performance and to address specific compatibility problems in different browser environments.
browsernode-jsjavascriptaws-sdksdk
segmentio/analytics-next
Nov 2021 - Dec 2022
Segment Analytics for Javascript
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:3 releases, 351 reviews, 57 commits in 1 year
Contributions summary:Christopher primarily worked on enhancing the Segment analytics-next JavaScript library. They refactored code to use generated version constants and added unit tests to ensure version synchronization. They also improved the codebase by addressing issues related to portability, process environment handling, and automatic tracking. Furthermore, the user was involved in bug fixes and implemented features like disabling client-side storage and query string handling.
analyticsjavascriptsdksegment-analyticssegment
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