Tier 3 Platform Engineer
About The Position
Peraton is seeking a Mid-Level Platform Engineer to support the development, operation, and sustainment of a mission-critical enterprise software platform for an Intelligence Community customer. The platform provides a standardized developer and user experience across multiple classified enclaves using a zero trust, hub-and-spoke architecture. The engineer will perform hands-on platform engineering, infrastructure automation, and Tier 3 technical support to maintain availability, reliability, and performance. The role supports containerized workloads, infrastructure as code, CI/CD pipelines, and shared platform services, while troubleshooting escalated technical issues across the enterprise. The engineer will work with a cross-functional engineering and operations team, collaborating with senior personnel, cybersecurity staff, and Tier 2 support to deliver reliable capabilities to mission users. This position is fully onsite in Chantilly, Virginia. The schedule involves rotating shifts within a 6:00 AM to 6:00 PM, seven-day onsite coverage window, plus participation in a shared after-hours on-call rotation.
Requirements
- Active TS/SCI clearance with Polygraph.
- Bachelor's degree in Computer Science, Engineering, Information Systems, or a related technical field, plus 5 or more years of relevant experience; an additional 4 years of relevant experience may substitute for the degree.
- Hands-on experience operating and troubleshooting production containerized workloads using Kubernetes or a Kubernetes-based platform.
- Experience supporting at least one major cloud environment (AWS, Azure, or a government cloud region) and hybrid cloud or on-premises infrastructure.
- Working knowledge of infrastructure as code technologies such as Terraform, Ansible, or similar tools.
- Working knowledge of CI/CD pipelines and automated deployment processes.
- Demonstrated ability to troubleshoot Linux systems, networking technologies (DNS, routing, load balancing, and firewalls), and identity and access management.
- Experience supporting production systems under defined service levels, including incident and problem management.
- DoD 8140 / 8570 IAT Level II certification, such as Security+ CE, or ability to obtain the required certification within the established timeframe.
- Ability to work rotating shifts within the seven-day onsite coverage window and participate in the shared after-hours on-call rotation.
Nice To Haves
- Experience supporting enterprise platforms across multiple classification levels or security enclaves, including cross-domain data movement.
- Familiarity with zero trust architecture principles and their implementation in cloud environments.
- Experience with IT service management tools, including ServiceNow.
- Familiarity with observability tools and platforms such as Prometheus, Grafana, Splunk, or Elastic.
- Experience supporting Risk Management Framework authorization activities or continuous Authority to Operate (cATO).
- Kubernetes certifications such as CKA, CKAD, or CKS, and/or a cloud professional certification.
- Prior experience supporting Intelligence Community or Department of Defense mission programs.
Responsibilities
- Deploy, configure, maintain, and troubleshoot platform components across hybrid cloud and on-premises environments, including Kubernetes-based container platforms.
- Support containerized workloads, including application deployments, configuration management, and platform updates.
- Develop and maintain infrastructure as code using Terraform, Ansible, or similar automation technologies.
- Support CI/CD pipeline development and maintenance for secure, repeatable platform deployments.
- Implement and maintain platform security configurations, including identity-aware access, network segmentation, and least-privilege controls.
- Assist with onboarding mission tenants, applications, and shared services onto the enterprise platform.
- Monitor platform health, availability, and performance using logging, metrics, alerting, and dashboard technologies.
- Provide Tier 3 support for escalated incidents involving compute, storage, networking, identity, and container infrastructure.
- Troubleshoot issues across Linux operating systems, DNS, routing, load balancing, firewalls, and identity and access management.
- Investigate incidents, document findings, and support root cause analysis and corrective action development.
- Resolve issues within established service levels and escalate complex problems to senior engineers and platform leadership as appropriate.
- Develop and maintain technical documentation, troubleshooting procedures, and operational runbooks.
- Support corrective actions and automation improvements to reduce recurring incidents.
- Collaborate with cybersecurity personnel on security configurations, continuous monitoring, and accreditation documentation.
- Provide technical guidance to Tier 2 support personnel and contribute to knowledge sharing.
- Participate in rotating onsite shifts and the shared after-hours on-call rotation.
Benefits
- Medical benefits
- Dental insurance
- Vision insurance
- Life insurance
- Health savings account
- Short- and long-term disability
- Employee assistance program
- Parental leave
- 401(k)
- Paid time off for vacation
- Company-paid holidays
- Eligible employees may be eligible for overtime, shift differential, and a discretionary bonus.
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
