Systems Engineer (TS​/SCI with Poly Required

Systems Engineer (TS/SCI with Poly Required)

Job Category
: IT Infrastructure and Operations

Requisition Number
: SYSTE
002232

• Posted :
  July 28, 2026
• Full-Time
• On-site
• Salary Range : $142,792 USD to $ USD

GCI embodies excellence, integrity and professionalism. The employees supporting our customers deliver unique, high-value mission solutions while effectively leverage the technological expertise of our valued workforce to meet critical mission requirements in the areas of Data Analytics and Software Development, Engineering, Targeting and Analysis, Operations, Training, and Cyber Operations. We maximize opportunities for success by building and maintaining trusted and reliable partnerships with our customers and industry.

At GCI, we solve the hard problems. As a Systems Engineer , a typical day will include the following duties:

We are seeking a hands-on Systems Engineer (SME) with deep expertise across infrastructure, platforms, and application ecosystems spanning cloud and on-premises environments. This role requires a proven practitioner who can analyze existing ("as is") systems and applications, document current state architectures, design future-state solutions, and implement systems enhancements or technology transformations end-to-end.

The ideal candidate is a technical leader and doer, not just an advisor - someone who can seamlessly collaborate across infrastructure, platform, application, Dev Sec Ops , information systems security, and data teams while maintaining ownership of system reliability, performance, scalability, and security.

• Bachelor’s Degree in Computer Science or related technical discipline, or other related technical discipline, or equivalent combination of education, technical certifications, training, and work/military experience
• Minimum ten (10) years of related systems engineering experience

Candidates must demonstrate hands-on experience in all the following areas:

• Enterprise networking (e.g., routing, switching, firewalls, load balancers, DNS)
• Storage technologies (e.g., SAN, NAS, object storage)
• Linux (Redhat, CentOS) operating systems (administration, hardening, automation)
• IdAM
  - Public Key Infrastructure (PKI) hands-on for AuthN and AuthZ

• Cloud platforms (AWS, Azure, and/or GCP)
• Hybrid and on-prem infrastructure design and integration
• Cloud networking, identity, security, and cost optimization

• Relational and No
  
  SQL databases - relational (e.g., Oracle, PostgreSQL, MySQL, SQL Server) and No
  
  SQL (e.g., MongoDB, Cassandra, DynamoDB, Redis) databases
• Web services, APIs, and middleware
• Event-based messaging systems (e.g., SQS, SNS, RabbitMQ)
• Infrastructure as Code
  - Scripting & Automation:
  Python, Bash, Power Shell, Terraform, Ansible, or Cloud Formation
• Configuration management and scripting (e.g., Power Shell, Bash, Python, etc.)
• CI/CD integration with infrastructure and platforms (e.g., Jenkins, Git Lab CI/CD, Git Hub Actions, Git Ops, ArgoCD)
• Security best practices and systems hardening
• Monitoring & Incident Response:
  Proficiency with tools like Prometheus, Grafana, Splunk, ELK Stack, Cloud Watch
• Ability to create:
• To-be architecture and detailed engineering designs
• Implementation and migration plans

• Observability and monitoring tools (e.g., logging, metrics, tracing)
• Zero Trust and modern security architectures
• Data analytics, AI/ML platform exposure
• Experience supporting production or mission-critical environments
• Relevant certifications (e.g., cloud, systems, security, or architecture)
• Knowledge of machine learning platforms (e.g., Tensor Flow, PyTorch, Sage Maker)
• Familiarity with big data ecosystems (e.g., Hadoop, Databricks, Snowflake, Google Big Query)
• Strong background in ITIL processes and agile methodologies

• Perform hands-on systems engineering across network, compute, storage, operating systems, middleware, databases, and applications
• Analyze and document as-is infrastructure, platform, and application architectures
• Work with the System Architect and Cloud Architect to create the detail engineering designs for modernization, optimization, and transformation initiatives
• Lead and execute cloud and on-prem system implementations, migrations, and upgrades
• Ensure systems meet availability, scalability, performance, security, and compliance requirements
• Integrate infrastructure and platforms with Dev Ops and Dev Sec Ops  pipelines
  
  Troubleshoot complex, cross-stack issues spanning infrastructure, platforms, and applications
• Collaborate effectively with:
• Software Engineers
• Data Modelers, Data Scientists, and Data Analysts
• Produce clear technical documentation, diagrams, standards, and runbooks
• Serve as a technical authority and escalation point for complex system issues
• Communication
  
  Skills:
• Ability to brief executives clearly and translate technical issues into business impact
• Ability to work across organizations (internal and IC) to implement complex…