Keith Petersen

Passed the AWS Solutions Architect – Professional exam
Built personal projects with AWS products and Terraform
Studying for other certs

Built a self-service automation platform in Python around GitHub and other tools
• Replaced basic, buggy logging with structured logging
• Refactored base http connections to use httpx instead of 3 different libraries
Increased execution speed by 15-20% of Python built from source in base Docker images used by all Jenkins build agents
• Converted Docker health checks to Kubernetes probes

Took time off to build projects with Python and AWS.
Created project showing how to run the latest versions of Python in AWS Lambda (which wasn’t simple at the time)

Handled production issues with logs, metrics, and transferring multi-GB files with Airflow
Wrote Python code to increase reliability of large file processing
Migrated over 30 apps and services from unsupported k8s / EKS versions to latest.
Standardized Helm charts with annotations
Used Terraform with Terragrunt to manage AWS resources
Configured logging and metrics with fluentd / fluentbit

Responsible for monitoring and observability across distributed systems that process machine and agronomic data at John Deere ISG
Set up Grafana and Prometheus metrics for Java / Scala services on Amazon ECS. Taught 3 other team members how to use Terraform to manage AWS resources.

Worked on a distributed system for John Deere ISG that sends machine alerts and other notifications to dealers and customers worldwide.
Improved the admin UI so dealers could manage multiple machines and techs per customer
Replaced a bunch of high-maintenance Python / Node.js scripts with Terraform

Tracked down unhandled exceptions in the nitrogen app backend. Triaged, prioritized, and helped fix them, for which I was recognized with an MVP cash award at the July 2018 all-hands meeting

Built a feature flags SaaS app.Distributed across multiple AWS regions, used by all Encirca apps

Maintained and enhanced NSIM, a SaaS distributed system for running nitrogen simulations.

Developed tools to manage vast amounts of plant breeding data.
Wrote new “fencepost” marker selection algorithm for soybean researchers
Developed new WPF application for managing soybean Trait Integration projects.

Full stack web development with C# / .net framework.

Part of a team that made improvements to the Des Moines Heritage Trust web sites, photo albums, and information management.

Spending time with a student, playing board games, sports, cooking, etc. Being a positive male role model and another caring adult in the student's life.