Darcy Rayner
Summary
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RockstarDarcy Rayner is an experienced engineering leader and full-stack developer with seven years of hands-on and managerial experience building serverless systems at scale in New York. Currently an Engineering Manager II at Datadog, Darcy leads multiple teams focused on serverless products and open-source integrations for AWS Lambda, Cloud Run and Azure, and has driven cross-team initiatives like a Rust Guild to expand language support. Technically fluent in Go, TypeScript, Python, C#, and AWS Lambda/Serverless patterns, Darcy originated Datadog’s early Lambda APM work and contributed to prominent open-source projects such as Datadog’s dd-trace-js and serverless functions repos. Comfortable balancing roadmap strategy, hiring and career coaching with deep engineering contributions, Darcy also has a background in games and cross-platform mobile that informs pragmatic product-focused design decisions.
7 years of coding experience
Github Skills (23)
javascript10
tracer10
python10
distributed-tracing10
aws-lambda10
apm10
datadog10
nodejs10
trace10
testing9
sinon9
json9
dockers9
docker9
chai9
Programming languages (11)
Github contributions (5)
DataDog/datadog-serverless-functions
Aug 2019 - Aug 2021
Repo of AWS Lambda and Azure Functions functions that process streams and send data to Datadog
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:13 releases, 25 reviews, 117 commits in 2 years
Contributions summary:Darcy focused on enhancing the AWS Lambda and Azure Functions functions within the repository. They implemented trace forwarding functionality using the Datadog and TraceConnection libraries, enabling distributed tracing. They also made improvements to enhance logging, metrics and added support for the MONITORING| legacy log format while also contributing to the setup and configuration of the build and release process. The user's work involved modifying core Python files and adjusting the cloudformation template to support new features.
azure-functionsserverlessaws-lambdastreamsaws
DataDog/dd-trace-js
Aug 2019 - Mar 2021
Datadog APM client for Node.js
Role in this project:Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:2 reviews, 32 commits, 10 PRs in 1 year 7 months
Contributions summary:Darcy primarily contributed to the development and testing of the Datadog tracing library for Node.js, focusing on features related to log exporters and AWS Lambda environments. Their work included implementing a new experimental log exporter, updating the log exporter's format, and adding automated detection of the AWS Lambda environment. They also made improvements to the existing testing infrastructure and made some refactoring changes.
apmjavascripttracingapm-tracertracer
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