Systems Engineer - TS/SCI w/ Poly

Systems EngineerWe are seeking a hands-on Systems Engineer with deep, practical experience across infrastructure, platforms, cloud, and application ecosystems. This role suits a technical leader who can analyze current-state environments, design future-state architectures, and execute complex system implementations end-to-end.What You'll Do:Perform full-stack systems engineering across network, compute, storage, OS, middleware, databases, and applicationsDocument "as-is" architectures and develop detailed "to-be" designsLead cloud and on-prem implementations, migrations, upgrades, and modernization initiativesEnsure system availability, scalability, performance, security, and complianceIntegrate systems and platforms with DevOps/DevSecOps pipelinesTroubleshoot complex, cross-domain issuesCollaborate with infrastructure, platform, software, DevOps, and data teamsProduce technical documentation, diagrams, standards, and runbooksServe as an escalation point and technical authorityCommunicate effectively with executives and cross-organizational partnersRequired Technical Skills:Enterprise networking, firewalls, load balancers, DNSSAN/NAS/Object storageKubernetes, DockerLinux (RHEL/CentOS) administration, hardening, automationPKI and identity managementCloud platforms: AWS, Azure, or GCPHybrid and on-prem integration, cloud networking/security/cost optimizationRelational & NoSQL databases (Oracle, PostgreSQL, MySQL, SQL Server, MongoDB, Cassandra, DynamoDB, Redis)APIs, web services, middleware, SDLC fundamentalsEvent messaging (SQS, SNS, RabbitMQ)IaC, automation, and scripting (Terraform, Ansible, Python, Bash, PowerShell, CloudFormation)CI/CD tools (Jenkins, GitLab CI/CD, GitHub Actions, ArgoCD)Security best practices and system hardeningMonitoring/observability tools (Prometheus, Grafana, Splunk, ELK, CloudWatch)Ability to produce "as-is" and "to-be" architectures plus implementation/migration plansPreferred Skills:Zero Trust architecturesAI/ML or data platform exposureBig data platforms (Hadoop, Databricks, Snowflake, BigQuery)Experience supporting mission-critical systemsITIL or agile delivery experienceCloud, security, or architecture certifications (AWS SA/DevOps, Azure Admin, CKA/CKAD, ITIL)What You'll Need to Succeed:Education: Bachelor's degree in Computer Science, Engineering, or a related technical discipline, or the equivalent combination of education, technical certifications or training, or work experience.Location: Herndon, VAHours: Contract core hours, 9am - 3pmSecurity Clearance: TS/SCI with PolygraphUS Citizenship RequiredGDIT IS YOUR PLACE:401K with company matchComprehensive health and wellness packagesInternal mobility team dedicated to helping you own your careerProfessional growth opportunities including paid education and certificationsCutting-edge technology you can learn fromRest and recharge with paid vacation and holidays