Cloud Infrastructure Engineer

Quantum Science Solutions (QSS) supports mission-critical cybersecurity operations for customers within the Intelligence Community. We are seeking a Cloud Infrastructure Security Engineer to engineer, secure, administer, and sustain Linux-based infrastructure supporting cybersecurity applications within classified AWS cloud environments. This position focuses on Amazon Web Services (AWS), Red Hat Enterprise Linux (RHEL), cloud infrastructure operations, Splunk Enterprise administration, infrastructure automation, and secure platform sustainment. The successful candidate will leverage strong cloud engineering, Linux systems administration, and cybersecurity experience to maintain secure, reliable, and compliant enterprise infrastructure supporting mission-critical operations., * Engineer, deploy, administer, and maintain Linux-based infrastructure supporting cybersecurity applications within classified AWS cloud environments.

• Configure and maintain Amazon EC2 instances, Amazon Machine Images (AMIs), EBS storage, networking, IAM roles, security groups, and operating system baselines.
• Install, configure, troubleshoot, patch, and upgrade Red Hat Enterprise Linux (RHEL) systems.
• Perform day-to-day operations and maintenance (O&M) across production, development, and test environments.
• Deploy, administer, troubleshoot, and maintain distributed Splunk Enterprise infrastructure, including Search Heads, Indexers, Heavy Forwarders, Universal Forwarders, Deployment Servers, and clustered environments.
• Monitor platform health, system performance, storage utilization, service availability, and enterprise logging infrastructure.
• Support Splunk installation, upgrades, patching, certificate management, backup, recovery, and lifecycle maintenance.
• Implement Linux and AWS security hardening in accordance with DoD STIGs, NIST 800-53, CNSSI 1253, ICD 503, and customer security requirements.
• Automate system administration and deployment tasks using Bash, Python, Ansible, Terraform, CloudFormation, or similar technologies.
• Configure and maintain secure AWS networking, including VPCs, subnets, route tables, security groups, IAM, DNS, load balancing, and storage services.
• Maintain Linux software repositories, package management, and approved software baselines.
• Develop engineering documentation, build guides, configuration baselines, Standard Operating Procedures (SOPs), and troubleshooting documentation.
• Collaborate with cybersecurity engineers, cloud architects, and system administrators to support secure cloud operations and continuous improvement.

• U.S. Citizenship.
• Active TS/SCI Clearance with Polygraph.
• Eight (8) or more years of directly relevant experience supporting Linux, cloud infrastructure, cybersecurity, or enterprise systems within secure government or Intelligence Community environments.
• Three (3) or more years of hands-on experience administering AWS cloud infrastructure.
• Strong experience administering Red Hat Enterprise Linux (RHEL) systems.
• Experience configuring and maintaining Amazon EC2 instances and Amazon Machine Images (AMIs).
• Strong Linux command-line administration skills, including networking, storage, permissions, logging, and performance troubleshooting.
• Experience with Linux package management using YUM/DNF and RPM repositories.
• Experience deploying, maintaining, and troubleshooting distributed Splunk Enterprise infrastructure.
• Understanding of Splunk Search Heads, Indexers, Heavy Forwarders, Universal Forwarders, Deployment Servers, and clustering concepts.
• Experience performing system upgrades, patching, backup and recovery, certificate management, and operational troubleshooting.
• Experience with Bash scripting and working knowledge of Python or similar automation languages.
• Familiarity with AWS services including IAM, VPCs, EC2, EBS, S3, CloudWatch, DNS, and related cloud technologies.
• Experience implementing STIGs, RMF controls, continuous monitoring, and security hardening best practices.
• Excellent analytical, troubleshooting, documentation, and communication skills., * AWS Certified cloud environments such as C2S or AWS GovCloud.
• Infrastructure as Code (Terraform, AWS CloudFormation, or Ansible).
• Git, Jenkins, or other DevSecOps and CI/CD technologies.
• High-availability, disaster recovery, and multi-environment cloud architectures.
• Red Hat Enterprise Linux automation and configuration management.
• Splunk Enterprise administration certifications or equivalent experience.
• Secure cloud networking and enterprise infrastructure design., Bachelor’s degree in Computer Science, Cybersecurity, Information Technology, Information Systems, Engineering, or a related technical discipline., High School Diploma with eight (8) or more years of directly relevant experience supporting Linux systems administration, cloud infrastructure, cybersecurity, or enterprise engineering., * AWS Certified Solutions Architect - Associate or Professional
• AWS Certified SysOps Administrator - Associate
• Red Hat Certified System Administrator (RHCSA)
• Red Hat Certified Engineer (RHCE)
• CompTIA Security+
• CISSP
• Splunk Enterprise Certified Admin

• Competitive compensation with annual performance bonuses
• Premium Medical, Dental & Vision coverage
• Generous PTO plus Federal Holidays
• 401(k) with company match

At QSS, you’ll support mission-critical cloud infrastructure that enables secure cybersecurity operations across classified government environments. You’ll work alongside experienced cloud engineers and cybersecurity professionals to build, secure, and sustain enterprise platforms that protect some of the nation’s most critical missions.