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ECS · 15 hours ago

Senior Infrastructure Engineer

Fairfax, VA

Full-time

Onsite

Senior Level

6+ years exp

ECS is seeking a Senior Infrastructure Engineer to work in their Fairfax, VA office. The role involves designing, building, and operating secure AWS environments within a FedRAMP and ATO-governed context, focusing on Infrastructure-as-Code and compliance.

Artificial Intelligence (AI)Cloud InfrastructureComplianceConsultingCyber SecurityInformation TechnologyMachine LearningSecuritySoftware

No H1B

U.S. Citizen Only

Responsibilities

Design, build, and maintain Infrastructure-as-Code using Terraform (modules, S3/DynamoDB remote state, OPA/tfsec policy integration)

Provision, upgrade, and manage EKS clusters, including namespaces, Helm-based add-ons (cert-manager, ESO, Confluent Operator), and IAM roles for service accounts

Design, configure, and troubleshoot AWS VPC networking, including routing, TGWs, DNS, DHCP, endpoints, NACLs, and security groups

Implement and secure microservices on EKS with proper connectivity to AWS services (S3, ECR, Secrets Manager, IAM)

Automate infrastructure deployments using GitHub Actions (or self-hosted runners), cross-account IAM role assumptions, and CI/CD policy gates

Collaborate with security and applications teams to enforce least-privilege IAM, automate compliance evidence collection, and support RMF/ATO documentation

Diagnose and resolve complex issues spanning containers, Kubernetes networking, and AWS layers (VPC - Zscaler - C-TIPS - SaaS endpoints)

Support observability, logging, and monitoring through integration with Elastic, ScienceLogic, or AppDynamics to meet SLA and audit requirements

Mentor and guide junior engineers through knowledge sharing, paired engineering, and process standardization

Evaluate and improve infrastructure design for policy compliance, resiliency, and performance tuning

Develop and maintain SOPs and playbooks that align with program governance

Qualification

AWS Cloud infrastructureTerraformKubernetes/EKSNetwork securitySecurity complianceScripting/automationCommunicationCollaborationMentoring

Required

Must be a US citizen with the ability to obtain Public Trust Suitability

Bachelor's degree or 8 years of relevant experience

6+ years designing, implementing, securing, and maintaining AWS Cloud infrastructure (CAWS, GovCloud, or equivalent)

5+ years of experience with Terraform (advanced modules, state management, policy enforcement)

5+ years' operating Kubernetes/EKS clusters, provisioning, scaling, networking, and Helm lifecycle management

5+ years of infrastructure experience related to network security

Strong networking foundation: TCP/IP, DNS, DHCP, TLS, routing, subnetting, NACLs, and endpoint connectivity

Proficient scripting/automation using Python or Bash, YAML/JSON templating, and Git-based workflows

Experience in security compliance environments (FedRAMP, FISMA, NIST 800-53) and supporting ATO documentation

Demonstrated ability to collaborate cross-functionally with Security, DevSecOps, and CI/CD teams to maintain compliant, auditable infrastructure

Strong communication skills with the ability to interface effectively with stakeholders from engineers to senior management

Preferred

Prior DHS CISA mission experience or experience in federal secure cloud operations

Experience designing and documenting security controls for System Security Plans (SSPs) and FISMA accreditation

Experience operating in multi-account AWS environments with strong IAM, SCP, and segmentation practices

Familiarity with observability tooling (Elastic, ScienceLogic, AppDynamics) and integrating metrics/log pipelines with EKS

Understanding Zero Trust architecture and Cloud-Native ATO automation practices

Experience in TLS and certificate management (ACM, ACM-PCA)

AWS Associate or Professional-level certification(s) (e.g., Solutions Architect, DevOps Engineer)

Company

ECS

Glassdoor3.6

ECS is a fast-growing 4,000-person, $1.2B provider of advanced technology solutions for federal civilian, defense, intelligence, and commercial customers.

Founded in 2001

Fairfax, Virginia, USA

1001-5000 employees