Systems Engineer - Container Platform - Contingent

About Aretum

Aretum is a mission-driven organization committed to delivering innovative, technology-enabled solutions to our customers across defense, civilian, and homeland security sectors. Our teams work at the intersection of strategy, technology, and transformation, helping agencies solve their most critical challenges. We believe in investing in our people and creating a culture where collaboration, inclusion, and professional growth are at the forefront.

Job Summary

Lead the deployment, hardening, and operational management of containerized applications on AWS ECS or OpenShift platform for a Federal cloud environment. Responsible for evaluating and hardening vendor-supplied containers, implementing container orchestration infrastructure-as-code, and establishing secure, compliant container operations that support millions of client transactions while meeting RMF/ATO requirements.

Due to the nature of our work as a federal consulting organization, employees may be expected to handle Controlled Unclassified Information (CUI) and must adhere to applicable safeguarding and compliance requirements.

Responsibilities

• Deploy, configure, and manage AWS ECS or OpenShift container orchestration platform in production Federal environment
• Evaluate vendor-supplied container images for security vulnerabilities, compliance gaps, and operational requirements
• Implement container hardening strategies applying CIS benchmarks, DSTI STIGs, and federal security baselines
• Configure container orchestration including task/service definitions (ECS) or deployments/operators (OpenShift)
• Manage container lifecycle including image versioning, updates, patching, and rollback procedures
• Implement horizontal auto-scaling policies based on CPU, memory, custom metrics, and workload patterns
• Establish container networking including service discovery, ingress/egress controls, and inter-container communication
• Perform container image scanning using tools such as Prisma Cloud, Aqua Security, Twistlock, or AWS ECR scanning
• Remediate container vulnerabilities identified through scanning and security assessments
• Implement runtime security controls including container isolation, resource limits, and security contexts
• Configure secrets management for containerized applications using AWS Secrets Manager or HashiCorp Vault
• Apply least-privilege principles to container IAM roles and service accounts
• Implement container image signing and verification workflows

• Document container security controls and provide evidence for RMF/ATO security assessment
• Develop and maintain infrastructure-as-code using Terraform or AWS CloudFormation for container platform
• Build automated deployment pipelines for container infrastructure and application updates
• Create repeatable, version-controlled infrastructure patterns for scaling to 130+ system instances
• Implement GitOps workflows for infrastructure change management and audit trails
• Develop automation scripts for container platform management and troubleshooting

• Establish configuration baselines and drift detection mechanisms
• Design and implement multi-AZ container deployments ensuring high availability during infrastructure failures
• Configure health checks, readiness probes, and liveness probes for container self-healing
• Implement disaster recovery procedures including backup strategies for persistent container data
• Establish resource reservation and quality-of-service policies to prevent resource contention
• Design capacity planning and scaling strategies to handle variable workloads serving millions of clients

• Implement zero-downtime deployment strategies including blue-green and rolling updates
• Create comprehensive operational runbooks for container platform management, troubleshooting, and incident response
• Document deployment procedures, configuration baselines, and security hardening steps
• Develop standard operating procedures (SOPs) for routine maintenance and emergency procedures
• Maintain container platform architecture diagrams and configuration documentation for RMF compliance

• Create knowledge transfer materials for scaling operations team

Requirements

• Bachelor's degree in Computer Science, Information Systems, Information Technology, or related technical field

• Relevant professional certifications and demonstrated experience may supplement education
• 5-7 years in systems engineering, DevOps, or infrastructure roles
• 3+ years hands-on experience with container platforms (ECS, OpenShift, or Kubernetes) in production environments
• 2+ years working with AWS infrastructure and services
• Experience with container hardening, security scanning, and vulnerability remediation
• Strong analytical and troubleshooting skills with systematic problem-solving approach
• Attention to detail and commitment to security-first operations
• Ability to work independently and manage multiple concurrent infrastructure workstreams
• Effective written and verbal communication for documentation and cross-team collaboration
• Adaptable to fast-paced, deadline-driven environment with changing requirements
• Proactive mindset for identifying and resolving potential issues before they impact operations

Preferred Requirements

• AWS Certified Solutions Architect - Associate or Professional
• Certified Kubernetes Administrator (CKA) or Red Hat Certified Specialist in OpenShift
• Docker Certified Associate
• Experience with service mesh technologies (Istio, AWS App Mesh)
• Knowledge of container vulnerability management platforms (Prisma, Aqua, Twistlock)
• Federal government contracting or DoD infrastructure experience

• Experience with immutable infrastructure and GitOps methodologies

Travel Requirements

This is a remote position; however, occasional travel may be required based on project needs, client meetings, team collaboration events, or training sessions. Travel is expected to be less than 10% and will be communicated in advance whenever possible.

EEO Statement

Aretum is committed to fostering a workplace rooted in excellence, integrity, and equal opportunity for all. We adhere to merit-based hiring practices, ensuring that all employment decisions are made based on qualifications, skills, and ability to perform the job, without preference or consideration of factors unrelated to job performance.

As an Equal Opportunity Employer, Aretum complies with all applicable federal, state, and local employment laws.

We are proud to support our nation’s veterans and military families, providing career opportunities that honor their service and experience.

If you require reasonable accommodation during the hiring process due to a disability, please contact [email protected] for assistance.

Equal Opportunity Employer/Veterans/Disabled

U.S. Work Authorization

Due to federal contract requirements, only U.S. citizens are eligible for this position. This position supports a federal government contract and requires the ability to obtain and maintain a Public Trust or Suitability Determination, depending on the agency’s background investigation requirements.

Benefits

Health Care Plan (Medical, Dental & Vision)

Retirement Plan (401k)

Life Insurance (Basic, Voluntary & AD&D)

Paid Time Off

Family Leave (Maternity, Paternity)

Short Term & Long-Term Disability

Training & Development