Johannes Petzold
Senior Staff Software Engineer at ServiceNow
Pasadena, California, United States
Summary
👤
Senior🎓
Top SchoolJohannes Petzold is a Senior Staff Software Engineer with over a decade of hands-on experience building and operating internet-scale backend and infrastructure systems at Google, AWS, New Relic and others. He has designed and migrated petabyte-per-day batch pipelines, built high-throughput network packet processors that handled EC2 traffic, and led company-wide CI/CD and internal tools efforts that materially improved developer velocity. Comfortable deep in C++, Go, Java and Python, he pairs low-level systems expertise (networking, BGP, packet processing) with practical observability and automation using tools like Prometheus, Terraform and Kubernetes. Johannes thrives in small autonomous teams, champions test automation and documentation, and favors lightweight agile practices with frequent stakeholder contact. An active contributor to Cloud Foundry components, he brings rare experience both shipping product-facing forecasting features and doing the gritty “keep-the-lights-on” reliability work that prevents incidents. Based in Pasadena, he combines production-scale engineering with a practical bent for tooling and developer experience improvements.
12 years of coding experience
20 years of employment as a software developer
BSc Electrical Engineering, BSc Electrical Engineering at University of Applied Sciences, Ulm, Germany
English, German
Stackoverflow
418reputation
16kreached
2answers
3questions
Github Skills (33)
cloud-foundry10
back-end-development10
rspec10
logger10
ruby10
go10
api10
sys10
logging10
backend10
syslog10
bosh9
message-queue9
devops9
cl9
Programming languages (7)
Github contributions (5)
cloudfoundry/loggregator-release
Jan 2014 - Sep 2014
Cloud Native Logging
Role in this project:
Back-end Developer
Back-end DeveloperContributions:53 commits in 8 months
Contributions summary:Johannes primarily focused on back-end development, as evidenced by their work on core logging functionality within the `cloudfoundry/loggregator-release` repository. Their contributions involved fixing bugs related to socket handling and message processing, specifically addressing how the system deals with control bytes and message offsets. Furthermore, the user implemented improvements in the message router, particularly in managing syslog drains, including the addition of blacklist functionality and improved metrics reporting.
golangcloud-foundryfluentdloggingcff-wg-app-runtime-platform
cloudfoundry/bosh
Feb 2014 - Mar 2014
Cloud Foundry BOSH is an open source tool chain for release engineering, deployment and lifecycle management of large scale distributed services.
Role in this project:Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:37 commits in 23 days
Contributions summary:Johannes primarily focused on improving the BOSH Director's operation. Their contributions included enhancing integration tests by logging service startup failures, refactoring code for improved formatting, and modifying the BOSH director worker process. They also added a new CLI command for running errands, allowing for easier execution of tasks within deployments. The user's work also touched upon the internal workings of the BOSH CLI and Director API.
foundryboshpcfchainengineering
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.