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Paul Pesnell
Mid-Level Full-Stack Software Engineer specializing in automation and systems administration
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About
Backend-focused engineer with financial domain experience who built Java REST APIs for data entry/validation and implemented strong testing, alerting, and rollback practices for production reliability. Has hands-on experience automating legacy manual processes with Ansible and troubleshooting AWS EKS/OpenShift deployments via CloudFormation in a permission-constrained enterprise environment; comfortable with occasional onsite meetings in Bethesda, MD.
Experience
Education
Key Strengths
- Built Java REST API for financial data entry and validation
- Implemented PKI-based authentication using existing enterprise infrastructure
- Edge-case driven validation and error handling through iterative testing
- Set up JUnit tests and automated email alerts to help desk on failures
- Experience troubleshooting CloudFormation/EKS deployments under constrained permissions
- Designed rollback approach by tracking database changes to revert on failures
- Production incident triage via log analysis across multiple interconnected servers
- Improved operational readiness by documenting troubleshooting steps post-incident
- Automated manual data refresh process using Ansible with parallel-run migration to reduce risk
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