PETER WALKER

admin@peterwalker.dev | peterwalker.dev

TECHNICAL PROFICIENCIES

• SOFTWARE/TOOLING: LAMP, AppDynamics, Git, MySQL, MSSQL, MongoDB, Postgresql, Oracle DB, SQL Server, PACS, Cerner CCL, Kibana, Grafana, Prometheus, Terraform, Jenkins, VSCode, fortiweb, NPM, Locust, Azure DevOps, Splunk, Jira, GitHub
• LANGUAGES: Bash, Python 3.x, JavaScript ES6+, node.JS, HTML 5, CSS 3
• NETWORKING & PROTOCOLS: TCP, HTTPS, DNS, DHCP, SMTP, SNMP, SSH, DICOM
• PLATFORMS/OS: Amazon Web Services, Azure, Linode ( Akamai), Salesforce Commerce Cloud, Cloudflare, Docker, Redhat, Solaris, SFCC, Ubuntu, VMWare, Windows Server

WORK EXPERIENCE

DevOps Engineer

WatchBox                        

September 2022 — Present

Provide secure infrastructure development and architecting to meet secure standards, pipeline creation and more

• Successfully saved $5000/month in AWS expenditure through right-sizing, sunsetting resources, instance scheduling and reservations
• Created AWS architecture diagrams and wiki pages for internal stakeholders
• Maintain and deploy code through GitHub Actions, AWS CodePipeline, and Bitrise
• Implemented endpoint and certificate monitoring with notifications to Slack with containerized tool
• Automated EC2 patching via AWS Systems Manager
• Manage DNS, redirects, and custom  for all internal/external web applications via Clouflare, DNSimple, and more
• Created CloudWatch dashboard and alerts via CloudWatch log group custom metrics
• Created disaster recovery documentation for internal applications and tooling
• Drive security initiatives to create a secure cloud infrastructure using CIS and AWS Best Practices to increase overall security score

Site Reliability Engineer

MedImpact Direct, LLC

September 2021 — September 2022

Provide application and infrastructure development and architecting for a hybrid environment

• Provisioning of several Azure resources including: VNET, API Management, Logic Apps, Function Apps, Storage Accounts, and CosmosDB using Terraform and Azure CLI while using HIPAA Policies
• Created Azure and on-prem architecture diagrams and wiki pages for internal stakeholders
• Troubleshoot Java performance issues with Prometheus, Jconsole, and application logging
• Maintain and deploy code through Azure DevOps pipelines for web application and business intelligence teams
• Implement and improve current resource monitoring in hybrid environment with Splunk and Azure Monitor
• Automate daily monitoring via Python scripts to reduce emails and send meaningful alerts to MS Teams
• Utilize sql queries and update statements for troubleshooting and configuration changes

Technology Automation Engineer

Federal Reserve Bank of Kansas City

July 2017 — August 2021

Provided application/infrastructure support for various Treasury Applications

• Managed Akamai properties through rule customization resulting in successful application updates and OWASP enhancements
• Assisted troubleshooting with NPM installs to streamline application updates
• Analyzed Python and Java errors for various AWS Lambda and Jenkins deployment issues
• Developed and maintained Bash and Python scripts to create automated alerts/health checks and migrate 100k+ files to AWS S3
• Wrote a Python tool using Tkinter to download data source files from the web on a daily, monthly and quarterly basis
• Created alarms in AWS CloudWatch to trigger SNS notifications to various stakeholders
• Patched and maintained logging infrastructure for the ELK stack
• Managed users, roles and groups in utilizing Terraform where possible within AWS Gov Cloud and Azure

Senior System Engineer

Cerner Corporation        

August 2014 — July 2017

Provided Tier 3 Application Support for Picture Archiving and Communication Systems (PACS)

• Troubleshoot software, hardware, and network issues by using: high availability commands (VERITAS and Red Hat Clustering), PACS tools, SQL queries/updates, OS tools, network tools and monitoring graphs: traceroute, ping, dig, netstat, top, sar
• Worked with problem management to avoid the opening of related tickets; created work plans for clients for installs/patches
• Analyzed Java stack traces for errors and/or configuration issues for PACS software suite
• Used Bash scripting for automated processes in managing disk space, deleting old logs, and modifying start-up scripts
• Worked with PACS and viewers development team to identify solution defects
• Supported a 24/7 rotation of on-call support for clients worldwide – Solely on call from 10/2014 – 3/2015
• Excellence Award Winner in Q4 2014 for solution support – Solely managed the queue for my team from 10/2014 – 3/2015

EDUCATION & CERTIFICATIONS

• Microsoft Azure Administrator - July 2022
• AWS Certified Cloud Practitioner - July 2021
• KU Full-Stack Coding Bootcamp Full-Stack Developer Certification - November 2019
• University of Maryland, UMUC Bachelor of Science, Business Administration - July 2011