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 Technical Network Expert to support in design, implementation, and sustainment of high-performance computing (HPC) environments. This role provides critical expertise in network design, advanced troubleshooting, and system integration across Linux, Windows, and UNIX infrastructures. The Technical Network Expert will play a key role in enabling AT&T to deliver innovative, mission critical solutions to our customer. 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: Provides Tier 0–4 support for server operations across all three sites and delivers design/architecture support for enterprise server services. Required skills include installation, configuration, tuning, troubleshooting, and support of: Server platforms: SPARC Solaris, Solaris x64, RedHat, and SUSE; direct-attached and Fibre Channel SAN storage. Client/server services: NFS and CIFS. Large-memory SMP, high-core-count systems. Enterprise client/server configurations. File systems: XFS, GPFS, and VXFS (multi-vendor environments). Blade systems and interconnects (SAN, FC, TCP/IP, etc.). Operating systems: RedHat and Microsoft. Messaging and identity services: Microsoft Exchange; Active Directory; Centrify. Infrastructure services/tools: DNS, NIS, Zenoss, SiteScope, HP OpenView, HPSA/HPSE, Splunk, Sendmail, NetQos, Infoblox. End-user access solutions: thin client/virtual bridges, Citrix, NoMachine NX. Virtualization: VMware and Solaris containers. Technology evaluation and integration: engage vendors; architect integration of authorized new technologies, including support for evaluation, government approval, and integration planning. Required Clearance: TS/SCI with polygraph. (#ts/sci) (#polygraph) Required Qualifications: Candidates shall have a Bachelor’s Degree in related field and have ten (10) years of demonstrable experience (15 years experience without degree) in support of a large client-server based IT enterprise. DoD 8570 IAT II level certification required. Ready to join our team? Apply today! Our Technical Expert/Functional Expert – Server (Government) earns between$89,200 - $217,170 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: 40 Time Type: Regular Location: Columbia, Maryland