High-Performance Computing (HPC) (SA3) (Government)
Columbia, Maryland
AT&T Global Public Sector is a trusted provider of secure, IP enabled, cloud-based, network solutions and professional services to the Federal Government. We are dedicated to recruiting, developing and empowering a diverse, high-performing workforce that is passionate about what they do, committed to our shared values and dedicated to our customers’ mission.
The scope of this Contract requires specialized expertise in areas such as high-performance computing (HPC), automated processing systems, distributed software design, and secure hosting and networking solutions. The IT infrastructure consists primarily of Linux, with some Windows, and UNIX. The environment includes a variety of network devices, server interconnections, mass storage solutions, and essential supporting infrastructure services. The services provided under this Contract support areas including HPC, infrastructure maintenance for HPC systems, networking, office automation, and the development of specialized software.
AT&T has an opening for a High-Performance Computing (HPC) Systems Administrator to support a large client based IT enterprise installation, configuration and networking of Linux and Windows based platforms. This position requires office presence a minimum of 5 days per week and is only located in the location(s) posted. No relocation is offered. Work to be performed at government customer site.
Description of Job Duties/Responsibilities:
The System Administrator provides HPC sustainment support across two geographically dispersed sites, including:
- Linux-based HPC clusters (e.g., Red Hat/CentOS/Rocky/Ubuntu) with parallel file systems (e.g., Lustre/GPFS) and high-speed interconnects (InfiniBand/Slingshot).
- Transition of new systems/capabilities into operations (clusters, SMP/MPP, parallel file systems).
- Support to HPC and ABS (ABUNDANTSHIELD) SRE teams in accordance with Government policies and procedures.
Proficient with the following (as specific position requires):
- Operate and maintain systems/services: monitoring, incident response, troubleshooting, and routine maintenance.
- Install/configure Linux OS, file systems, and TCP/IP networking; troubleshoot OS and application issues.
- Automate/administer via BASH scripting; compile/install software as required.
- Use common operations and observability tooling: Jira, Confluence, Grafana, Prometheus, Nagios.
- Support HPC workload and configuration management tooling: Slurm, git, Salt, Ansible.
- Provide user support and escalation/status communication to agency management and internal customers.
- Optimize operations through resource utilization and capacity analysis/planning.
- Apply in-depth troubleshooting skills across heterogeneous systems (no single fixed solution).
- Provide detailed analysis and feedback to agency management and internal customers for escalated tickets.
- Provide support for the dispatch system and hardware problems and remains involved in the resolution process.
- Harden, patch, and tune Linux/UNIX/Windows systems; implement OS-level enhancements to improve reliability and performance.
- Support the design of systems, mission architecture and associated hardware.
- Possess a working knowledge and understanding of system administration interdependencies as part of the Service Oriented Architecture (SOA).
- Analyze and resolve complex problems associated with server hardware, applications and software integration.
Required Clearance: TS/SCI with polygraph. (#ts/sci) (#polygraph)
Required Qualifications:
B.S. in a technical discipline and 10 years’ experience as a System Administrator in programs and contracts of similar scope, type and complexity or 15 years’ experience in lieu of a degree.
- DoD 8570 IAT II level certification required.
Ready to join our team? Apply today!
Our High-Performance Computing (HPC) (SA3) (Government) earns between $108,000 - $193,280 yearly. Not to mention all the other amazing rewards that working at AT&T offers. Individual starting salary within this range may depend on geography, experience, expertise, and education/training.
Joining our team comes with amazing perks and benefits:
- Medical/Dental/Vision coverage
- 401(k) plan
- Tuition reimbursement program
- Paid Time Off and Holidays (based on date of hire, at least 23 days of vacation each year and 9 company-designated holidays) *Pro-rated when working less than 40 hrs/wk.
- Paid Parental Leave
- Paid Caregiver Leave
- Additional sick leave beyond what state and local law require may be available but is unprotected · Adoption Reimbursement
- Disability Benefits (short term and long term)
- Life and Accidental Death Insurance
- Supplemental benefit programs: critical illness/accident hospital indemnity/group legal
- Employee Assistance Programs (EAP)
- Extensive employee wellness programs
- Employee discounts up to 50% off on eligible AT&T mobility plans and accessories, AT&T internet (and fiber where available) and AT&T phone
Weekly Hours:
40Time Type:
RegularLocation:
Columbia, MarylandIt is the policy of AT&T to provide equal employment opportunity (EEO) to all persons regardless of age, color, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, sexual orientation, gender identity and/or expression, genetic information, marital status, status with regard to public assistance, veteran status, or any other characteristic protected by federal, state or local law. In addition, AT&T will provide reasonable accommodations for qualified individuals with disabilities. AT&T is a fair chance employer and does not initiate a background check until an offer is made.
Job ID R-105921 Date posted 04/06/2026
Benefits
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- Paid Time Off
- Tuition Assistance
- Medical and dental plans
- Discounts
- Training & Development
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