DevOps Engineer III — Platform Maintenance & Vulnerability Response

Ad Hoc LLC is a technology company that empowers organizations to deliver scalable, impactful digital services. The DevOps Engineer III will be responsible for supporting the goal of meeting scope, schedule, and delivery requirements while driving improvements in DevOps processes and practices.

Responsibilities:

• Acknowledge vulnerability notifications within 24 hours / next business day, triaging into the appropriate SLA response tier (High: 30 days, Medium: 180 days, Low: 360 days)
• Remediate identified system vulnerabilities on a weekly release cadence, including modification, testing, and installation of fixes across all instances; document via release notes, installation guides, and user guides
• Perform security assessments and vulnerability scans using AWS Inspector, AWS Security Hub, Twistlock, or similar tools
• Maintain trusted base images and automate dependency updates (e.g., Renovate Bot); execute container scans in CI/CD pipelines
• Audit and inventory non-Terraformed legacy resources, systematically remediating configuration drift into managed code
• Configure and maintain network boundaries: VPC subnets, security groups, Network ACLs, firewalls, VPN configurations, and route paths
• Maintain development environment readiness: Terraform updates, git repo builds, key/credential validation, and log analysis for AppDev teams
• Coordinate cross-team remediation schedules and story prioritization with AppDev workstreams; participate in on-call rotations supporting Tier 2/3 incident response

Requirements:

• Bachelor's degree and 5+ years of relevant experience, or equivalent additional experience in lieu of a degree
• Must meet federal suitability requirements and pass a background investigation as a condition of employment
• Hands-on experience with AWS services including EC2, ECS, RDS, S3, Lambda, and CloudWatch
• Proficiency with Terraform for infrastructure-as-code provisioning and drift prevention
• Demonstrated experience building and optimizing CI/CD pipelines in GitLab and/or Jenkins
• Strong working knowledge of containerization using Docker and container orchestration on AWS ECS/EKS/Fargate
• Familiarity with DevSecOps practices including SAST, dependency scanning, and automated vulnerability remediation
• Solid understanding of networking, virtualization, and cloud infrastructure fundamentals
• Experience with vulnerability management workflows and security scanning tools (AWS Inspector, Security Hub, or similar)
• Configuration-drift detection and remediation experience
• Prior work in federal environments or familiarity with FedRAMP, FISMA, or ATO processes
• Experience supporting SAFe or scaled Agile delivery teams as a platform or infrastructure provider
• Familiarity with Kubernetes or comparable container orchestration platforms
• Familiarity with government IT security scanning procedures and change management boards
• Knowledge of automated security policy-as-code engines
• Highly organized with strong prioritization and tracking habits