Note: The job is a remote job and is open to candidates in USA. By Light Professional IT Services LLC is a company that supports defense, civilian, and commercial IT customers worldwide. They are seeking a highly qualified Senior Cloud Infrastructure Engineer to lead the implementation, security, and operations of mission-critical cloud environments that power DoD cyber training capabilities and applications.

Responsibilities

• Support the design and maintain landing zones using cloud applications such as AWS Organizations, Control Tower, SCP guardrails, Identity and Access Management (IAM) multi-account patterns, and VPC architectures (Transit Gateway, PrivateLink, NAT, IGW) for enclave isolation and cross-domain needs
• Engineer high-availability, multi-Region solutions leveraging cloud tools such as EC2, EKS/ECS Fargate, RDS/Aurora, DynamoDB, S3/EFS/FSx, Load Balancers, Route 53, and API Gateway
• Implement Zero Trust-aligned patterns (micro-segmentation, strong identity, continuous verification) consistent with DoD Zero Trust guidance
• Implement security controls and evidence generation for RMF ATO packages (SSP, SAR, POA&M) in coordination with cybersecurity teams
• Apply DISA STIGs (OS, DB, Kubernetes, Container) and SRG requirements for workloads at IL2–IL6
• Tailor and automate STIG application using IaC and configuration management
• Integrate encryption and key management with cloud tools such as AWS KMS/HSM; enforce IAM least privilege, SCPs, permission boundaries, ABAC, and robust secrets management
• Implement cloud logging and metrics tools such as CloudTrail/CloudWatch/GuardDuty/Config for comprehensive audit and detection
• Align architectures with FedRAMP Moderate/High baselines when required and ensure boundary compliance for controlled workloads
• Develop secure connectivity (AWS Direct Connect/VPN), hybrid routing, and segmentation; implement TLS mutual auth, certificate management, and private service endpoints
• Design logging and telemetry pipelines (CloudWatch, OpenTelemetry, Kinesis, S3, SIEM integration such as Splunk/ELK) with retention, metadata/tagging, and data lifecycle policies
• Own SLOs/SLAs for platform services
• Implement autoscaling, health checks, and proactive capacity management
• Lead cost management and alerting practices of cloud environments in coordination with project leads
• Provide Tier 3 support, on-call rotations during exercises, and incident response coordination with cybersecurity and training operations
• Collaborate with agile teams and product owners to translate training requirements into platform capabilities
• Provide mentorship for junior engineers
• Establish standards, design reviews, and repeatable processes
• Present cloud solutions to project leadership and accreditation authorities

Skills

• Bachelor's degree in a related technical discipline such as computer science or information technology from an accredited college or university
• 8–12+ years of experience in cloud/platform engineering with at least 5 years focused on Amazon Web Services (AWS) with a demonstrated leadership delivering secure, scalable, production-grade cloud-based systems
• DoD 8570/8140 compliance: IAT II (Security+) required; IAT III/CISSP or CASP+ preferred
• Infrastructure-as-code mastery (Terraform and/or CloudFormation), pipelines (GitLab/Jenkins), and configuration management (Ansible/Chef)
• Deep AWS tool expertise: Organizations/Control Tower, IAM, Bedrock, KMS/HSM, VPC/Transit Gateway, Direct Connect/VPN, EC2/EKS/ECS, RDS/Aurora, DynamoDB, S3/EFS/FSx, ELB/API Gateway/Lambda, CloudTrail/CloudWatch/Config/GuardDuty, Route 53, EventBridge/SQS/SNS
• Understanding of RMF accreditation (SSP, POA&M, Continuous Monitoring) and control implementation under NIST SP 800-53 Rev. 5
• Hands-on application of DISA STIGs and DoD Cloud Computing SRG for IL2–IL6 workloads
• Strong understanding of GovCloud (US) patterns and boundary controls
• Strong knowledge of networking fundamentals: TCP/IP, DNS, TLS/PKI, routing, micro-segmentation, Zero Trust patterns
• Logging/monitoring design and SIEM integration
• Incident response and troubleshooting across app, infra, and network layers
• Excellent communication, documentation, stakeholder engagement skills, and the ability to lead cross-functional initiatives
• Active DoD Secret clearance preferred; If not already cleared, candidate will be required to obtain and maintain a Top Secret/SCI clearance as a condition of employment
• AWS Certifications: Certified Solutions Architect – Professional, Security – Specialty, and/or DevOps Engineer – Professional
• Kubernetes certifications: CKA/CKS
• Experience with HashiCorp Vault, Service Mesh (Istio), policy-as-code (OPA), and zero trust implementations in government environments

Benefits

• Medical, Dental & Vision Coverage
• Wellness Program
• 401(k) Matching
• Disability (Short Term & Long Term)
• Employee Assistance Program
• Life Insurance
• Education & Training
• Generous Leave Policy (11 Federal Holidays, PTO, Military Leave, Bereavement and Jury Duty)

Company Overview