(1113671) Senior DevOps Engineer - AWS & Kubernetes

Senior DevOps Engineer – AWS & Kubernetes

Diversified Services Network, Inc. (DSN) is seeking a full-time Senior DevOps Engineer – AWS & Kubernetes to join our team in your choice of our Chicago, IL or Irving, TX locations. We offer a hybrid work model, full benefits, PTO, 401k, and more! If you're looking to grow your career within an extremely reputable, stable Fortune 100 company - let's talk!

Position Overview

In this role, you will lead the organization's containerization strategy, build enterprise-grade automation workflows utilizing GitHub Actions, and manage the Infrastructure as Code (IaC) lifecycle to ensure high availability, optimal performance, and cost efficiency. You will work closely with a team of six, driving CI/CD automation, Kubernetes cluster management, cloud infrastructure, and DevSecOps practices.

Key Responsibilities

• CI/CD & GitHub Actions Automation
• Workflow Architecture: Design, build, and optimize matrixed, self-hosted, or cloud-hosted GitHub Actions workflows for continuous integration and automated testing.
• Reusable Infrastructure: Build and maintain version-controlled custom GitHub Actions and reusable workflow templates to standardize pipelines across multiple engineering teams.
• Secret Management: Manage secure environment variables, contexts, and deployment keys using GitHub Secrets, Environments, and integrations with AWS Secrets Manager or HashiCorp Vault.
• Secure Delivery: Implement OpenID Connect (OIDC) to authenticate GitHub Actions runners natively with AWS IAM, eliminating long-lived credentials.
• Kubernetes & Container Orchestration
• Cluster Management: Design, deploy, and maintain multi-cluster production AWS EKS and Kubernetes environments.
• Upgrades & Maintenance: Execute seamless, zero-downtime cluster upgrades, patch releases, and routine maintenance node recycling.
• Autoscaling & Cost Optimization: Configure and tune cluster autoscaling using tools like Karpenter or Cluster Autoscaler, alongside horizontal/vertical pod autoscaling (HPA/VPA).
• Package Management: Build, maintain, and version control internal Helm charts for streamlined application delivery.
• AWS Infrastructure & Automation
• Infrastructure as Code (IaC): Provision and manage 100% of cloud resources using Terraform or AWS CDK to maintain strict environment consistency.
• Cloud Architecture: Administer core AWS services including EC2, VPC, IAM, S3, Route53, and RDS platforms.
• Scripting & Tooling: Write clean, maintainable automation scripts using Python and Bash to eliminate manual interventions.
• GitOps & Release Management
• GitOps Adoption: Implement and maintain GitOps-driven deployment frameworks utilizing tools like ArgoCD or Flux to sync EKS state with source repositories.
• Container Registry: Oversee Docker container builds, multi-stage layering, and registry vulnerability management via AWS ECR, triggered natively via GitHub Actions runner hooks.
• Networking, Security, & DevSecOps
• Cloud Networking: Manage sophisticated container networking interfaces (VPC CNI) and advanced ingress routing controllers (ALB, NGINX, or Traefik).
• Access Control: Enforce security guardrails utilizing AWS IAM Roles for Service Accounts (IRSA) to grant fine-grained pod permissions.

Requirements

• Candidate Requirements
• Experience Required
• No degree required.
• 5+ years of professional experience in dedicated DevOps, Site Reliability Engineering (SRE), or cloud infrastructure roles.
• 3+ years of heavy practical experience writing, testing, and modularizing complex GitHub Actions workflows.
• 5+ years of hands-on, architecture-focused experience across major AWS services.
• 3+ years of deep technical experience running production-grade workloads on Amazon EKS, including advanced troubleshooting.
• Expert proficiency with Terraform and at least one scripting language (Python or Bash).

Preferred Qualifications

• Certifications: Certified Kubernetes Administrator (CKA), CKAD, or AWS Certified DevOps Engineer Professional.
• Runner Administration: Experience managing scaling policies for enterprise-scale GitHub Actions self-hosted runners on Kubernetes (e.g., using Actions Runner Controller - ARC).