Open to opportunities

Byron Mansfield

@byronmansfield

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DevSecOps/SRE engineer with 10+ years building secure, multi-cloud Kubernetes and CI/CD automation.

United States

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What I'm looking for

I’m looking for a DevSecOps/SRE role where I can run secure, multi-cloud Kubernetes operations and build enterprise CI/CD and GitOps pipelines—especially in environments that value FedRAMP/FISMA/NIST-style compliance, automation, and observability.

I’m a DevSecOps/SRE Engineer with 10+ years specializing in Kubernetes, cloud infrastructure, and CI/CD automation across AWS, GCP, and Azure. I focus on high-security environments, combining reliable operations with measurable compliance.

In my current role, I manage secrets infrastructure for 400+ applications across multi-tenant GKE clusters. I architected Vault Secrets Operator (VSO) deployments using Sveltos to automate multi-cluster secrets management, and I build enterprise GitLab CI/CD pipeline templates that standardize Helm deployments, Terraform modules, Packer, and Ansible.

Previously at Respawn (EA Games), I led infrastructure modernization for high-scale matchmaking services, migrating to containerized Kubernetes to improve scalability and deployment speed. I terraformed disaster recovery for repeatable multi-region deployments and implemented real-time observability with Prometheus, Grafana, and Promtail, while automating operational workflows with Python and Bash.

Early in my federal & enterprise consulting work, I architected HA Kubernetes clusters in AWS GovCloud with Istio for classified applications, built STIG-hardened RHEL AMIs, and implemented GitOps CI/CD with GitHub Actions to ArgoCD for secure, auditable deployments. I also led CMMI/CMMC compliance initiatives and automated 40+ AWS environments as ephemeral infrastructure to reduce operational cost and improve consistency.

Experience

Work history, roles, and key accomplishments

Current

Senior DevSecOps Engineer

Current

Arvest Bank

Nov 2023 - Present (2 years 7 months)

Served as Vault administrator for 400+ applications across multi-tenant GKE clusters and architected Vault Secrets Operator (VSO) deployments using Sveltos for automated multi-cluster secrets management. Built enterprise GitLab CI/CD pipeline templates and maintained Helm deployments, Terraform modules, Packer/Ansible automation, and security scanning to support PCI-aligned infrastructure.

Kubernetes GKE Sveltos Gitlab CI Helm Terraform Packer Ansible Secrets Management

Senior Site Reliability Engineer

Respawn

May 2022 - Nov 2023 (1 year 6 months)

Managed AWS infrastructure for Apex Legends matchmaking servers supporting millions of concurrent players. Led migration to Kubernetes, terraformed multi-region disaster recovery deployments, and implemented Prometheus/Grafana/Loki-based observability with Python/Bash operational automation and Ansible for legacy management.

AWS EKS Kubernetes Terraform Prometheus Grafana Python BASH Ansible

Senior DevOps Engineer

Prominent Edge

Jan 2020 - May 2022 (2 years 4 months)

Architected HA Kubernetes clusters in AWS GovCloud with Istio service mesh for classified government applications and designed STIG-hardened RHEL AMIs for EKS with an air-gapped private TLS model. Led federal compliance initiatives (CMMI/CMMC, HIPAA/PII/PHI, NIST, SOC2) and delivered secure GitOps CI/CD using GitHub Actions to ArgoCD, including automation to make 40+ AWS environments ephemeral.

AWS GovCloud Kubernetes EKS Istio GitOps ArgoCD GitHub Actions STIG RHEL

DevOps Engineer

Planned Parenthood Federation of America

Feb 2018 - Jan 2020 (1 year 11 months)

Led production releases and maintained AWS infrastructure using Terraform for critical healthcare services. Transitioned legacy applications to Kubernetes and automated development pipelines to support reliable production operations.

AWS Terraform Kubernetes CI CD Infrastructure Automation Production Releases DevOps

DevOps Engineer

Demandbase

Nov 2014 - Dec 2016 (2 years 1 month)

Automated CI/CD pipelines with Jenkins and orchestrated deployments using Rancher and Docker. Scripted AWS infrastructure tasks and maintained production application deployments to improve operational reliability.

Jenkins CI CD Rancher Docker AWS Bash Scripting Production Operations