4274 Sr. Systems Engineer with Security Clearance

OVERVIEW: We are seeking a highly skilled Senior Systems Engineer to join our Cross Domain Engineering Team supporting mission-critical programs within the federal government. The ideal candidate will bring deep expertise in systems design, network infrastructure, and cloud automation-combining hands-on technical proficiency with strategic leadership. This role involves architecting, developing, and maintaining secure, scalable, and highly available systems across multiple environments, including AWS and on-premises platforms, to enable critical data exchange and operational continuity across domains. GENERAL DUTIES: * Architect, develop and support a for a highly available resource for mission-critical programs composed of numerous AWS services and on-premises servers across multiple locations. * Automation and Cloud Integration: Automate the creation and management of AWS resources using AWS CloudFormation, AWS Lambda, GitLab, BASH, and Python scripting. * Infrastructure Lifecycle Automation: Design and implement an automated, hands-free monthly server rebuild and switchover process leveraging CloudFormation, Lambda, and EventBridge. * Linux Automation and Monitoring: Develop and maintain a comprehensive system of scripts and processes to automate configuration, maintenance, and monitoring of UNIX systems. * Maintain network hardware and server infrastructure, including analysis, configuration, installation, and testing of new hardware and software. * Support daily network operations, evaluating utilization, monitoring response times, and detecting and resolving operational problems. * Troubleshoot issues at both the physical and logical levels of the network, using diagnostic tools and communication protocol analysis. * Participate in planning, design, technical reviews, and implementation of network and infrastructure projects supporting voice and data communications. * Maintain and enhance network infrastructure standards, including TCP/IP communication protocols, and ensure adherence to industry and security best practices. * Exhibit proficiency with virtualization technologies (VMware, AWS, etc.) and network administration, ensuring high system availability and scalability. * Provide technical consultation, mentorship, and training to IT personnel designated by the government. * Diagnose and resolve complex infrastructure and communication problems affecting production systems. * Manage patching, certification, and accreditation tasks, ensuring compliance with approved baselines and government standards. * Develop and maintain Standard Operating Procedures (SOPs) and Quick Reference Guides to support continuity and knowledge transfer. * Serve as a technical advisor for system and database design, development, and procurement, recommending solutions for performance, security, and scalability. * Set and maintain standards for client/server database architecture, ensuring consistent implementation across enterprise environments. REQUIRED QUALIFICATIONS: * Bachelor's degree in Engineering, Computer Science, or related technical discipline. * 7-9 years of documented experience in Information Systems Engineering, including: * Hardware and network designs for large-scale enterprise applications such as but not limited to, cloud service providers, network design and implementation, datacenter experience, network/systems administration, domain administration, virtualization platforms, SaaS, PaaS. * Implementing and maintaining security best practices, creating and maintaining documentation for architecture, configuration and processes. * Experience establishing and maintaining monitoring and alerting systems for cloud and on premise resources. * Optimizing on premise and cloud infrastructure for cost efficiency and performance. * Troubleshooting and resolving issues related to performance and availability. * Documented and demonstrated experience with troubleshooting and problem solving. * Experience with software development. * Experience scripting and programming for automation. * Experience monitoring large enterprise production applications. * Experience troubleshooting production applications. * Experience with performance tuning and fault finding. * Experience in design consulting, platform management, and capacity planning. * Documented and demonstrated experience with troubleshooting and problem solving. * Documented and demonstrated experience as an individual consultant or a team lead. DESIRED QUALIFICATIONS: * Demonstrated experience designing, implementing, or supporting Cross Domain Solutions (CDS) within secure, multi-network environments. * Cloud certification * Expertise with Python, Bash, PowerShell, or similar scripting languages for infrastructure management. * Proficiency with AWS CloudFormation, Lambda, EventBridge, GitLab, and related automation pipelines. * Familiarity with Oracle SuperCluster, Solaris, and RHEL systems administration. * Experience in platform management, capacity planning, and performance tuning for mission-critical systems CLEARANCE: * Top Secret minimum

Location: Vienna, Virginia, US

Posted Date: 11/12/2025