Sam Jefferis

DevSecOps Engineer

• Develop and maintain CI/CD pipelines and infrastructure for secure software and environments
• Diagnose and resolve OS (Linux), networking, and software issues across production systems
• Generate, document, and enforce policies and procedures while providing tier 1 client support

Platform Engineer

• Constructed Terraform to deploy AWS resources including EC2, Lambda, and networking
• Assessed and remediated security findings within the Linux OS and AWS Security Hub
• Built GitLab CI/CD pipelines deploying Terraform via YAML and Bash, integrated with security compliance frameworks
• Hardened, customized, and debugged Linux environments for development and production workloads
• Responded to and resolved production outages caused by networking and certificate failures
• Developed and implemented policies and procedures for 24x7 coverage of critical production systems

Associate DevOps Engineer

• Designed and built GitLab CI/CD pipelines using Ansible, Terraform, Bash, Harbor, and Kubernetes (RKE2), automating deployments that previously required constant 4-hour manual intervention
• Performed STIG security remediations on Ubuntu and RHEL systems to meet U.S. DoD requirements for defense customers
• Deployed and managed Azure environments including VMs, Key Vault, NSGs, VNets, and storage accounts
• Deployed a Tektelic IoT network using Datacake & The Things Network for a proof-of-concept product
• Managed and maintained upgrades for GitLab and GitLab Runner servers; administered instance, group, and project settings
• Led Agile scrums and managed epics/issues for the DevOps team; mentored interns in Summers 2023 and 2024
• Awarded Rookie of the Year (Dec 2023) out of all first-year employees and contractors

Emergency Medical Technician

Provided emergency medical care to the Texas A&M campus community as a certified EMT.