Systems Engineer - TS/SCI w/ Poly

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: None Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Job Qualifications: Skills: Complex Systems, DevOps, Software Systems Engineering Certifications: None Experience: 10 + years of related experience US Citizenship Required: Yes Job Description: We 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 applications • Document “as-is” architectures and develop detailed “to-be” designs • Lead cloud and on‑prem implementations, migrations, upgrades, and modernization initiatives • Ensure system availability, scalability, performance, security, and compliance • Integrate systems and platforms with DevOps/DevSecOps pipelines • Troubleshoot complex, cross-domain issues • Collaborate with infrastructure, platform, software, DevOps, and data teams • Produce technical documentation, diagrams, standards, and runbooks • Serve as an escalation point and technical authority • Communicate effectively with executives and cross-organizational partners Required Technical Skills: • Enterprise networking, firewalls, load balancers, DNS • SAN/NAS/Object storage • Kubernetes, Docker • Linux (RHEL/CentOS) administration, hardening, automation • PKI and identity management • Cloud platforms: AWS, Azure, or GCP • Hybrid and on‑prem integration, cloud networking/security/cost optimization • Relational & NoSQL databases (Oracle, PostgreSQL, MySQL, SQL Server, MongoDB, Cassandra, DynamoDB, Redis) • APIs, web services, middleware, SDLC fundamentals • Event 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 hardening • Monitoring/observability tools (Prometheus, Grafana, Splunk, ELK, CloudWatch) • Ability to produce “as-is” and “to-be” architectures plus implementation/migration plans Preferred Skills: • Zero Trust architectures • AI/ML or data platform exposure • Big data platforms (Hadoop, Databricks, Snowflake, BigQuery) • Experience supporting mission-critical systems • ITIL or agile delivery experience • Cloud, 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, VA • Hours: Contract core hours, 9am - 3pm • Security Clearance: TS/SCI with Polygraph • US Citizenship Required GDIT IS YOUR PLACE: • 401K with company match • Comprehensive health and wellness packages • Internal mobility team dedicated to helping you own your career • Professional growth opportunities including paid education and certifications • Cutting-edge technology you can learn from • Rest and recharge with paid vacation and holidays #WeAreGDIT #JET #GDITEnhanced2026 #VA_2026Alumni The likely salary range for this position is $162,037 - $219,227. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range. Scheduled Weekly Hours: 40 Travel Required: None Telecommuting Options: Onsite Work Location: USA VA Herndon Additional Work Locations: Total Rewards at GDIT: Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most. Our Identity Verification Process: As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes. About Our Work: We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development. Join our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc. Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans