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.
RIS I is the delivery of regional IT services to the end user. We offer support of end user devices including desktop, workplace peripherals, and voice and video devices. We support local and campus area networks, including wireless and cable plant.
Join a mission-focused team supporting critical communications infrastructure. We are seeking a detail-oriented Telephony System Administrator who brings strong technical troubleshooting, security monitoring, and collaboration skills to help maintain reliable, compliant, and secure communications systems for customer operations.
This is a full-time onsite role based in the location(s) posted and is performed from the designated work location five days per week. No relocation is offered.
Description of Job Duties/Responsibilities:
- Provide overall system administration for an enterprise-wide Cisco Unified Communications Manager and related systems.
- Plan regular maintenance tasks including updates and upgrades.
- Maintain current and accurate documentation of system configurations.
- Design, administer, and analyze corporate dial plans and traffic routes for voice network structure.
- Administer and monitor voice systems for performance and SLA attainment.
- Provide support as needed to lower tier break/fix resolution and move/add/change/deactivation requests for all telecommunications systems.
Required Clearance: TS/SCI with polygraph. (#ts/sci) (#polygraph)
Required Qualifications:
Seven (7) years of experience as an SA in programs and contracts of similar scope, type, and complexity are required. Bachelor’s degree in Math, Science, Engineering, Statistics, Engineering Management or a related discipline from an accredited college or university is required. Five (5) years of additional SA experience may be substituted for a Bachelor’s degree.
- Experience with the configuration and administration of common TDM and VOIP telephone call manager systems, such as the Nortel Meridian line of PBXs and Cisco Unified Call Manager.
- Large-scale implementation experience with Cisco Voice in a multi-cluster environment and data networking infrastructure.
- Working knowledge of H.323 and SIP. Familiar with Cisco UCS platforms, voice gateways, virtualization, and ESXi.
- DoD 8570 IAM Level 2 required.
Ready to join our team? Apply today!
Our Telephony Systems Administrator (SA1.5) (Government)
earns $89,200 - $129,400
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 wireline phone
Weekly Hours:
40Time Type:
RegularLocation:
Columbia, MarylandAT&T and its subsidiaries are committed to equal employment opportunity. All hiring, promotion, and other employment decisions remain merit-based and free from discrimination on the basis of race, color, religion, religious creed, national origin, ancestry, age, sex, sexual orientation, gender, gender identity, gender expression, physical disability, mental disability, pregnancy, medical condition, genetic information, marital status, citizenship status, military status, veteran status, or any other characteristic protected by federal, state, or local laws. In addition, AT&T will provide reasonable accommodations to qualified individuals with disabilities. AT&T is a fair chance employer and does not initiate a background check until an offer is made. Click here to learn more or request an application accommodation here.
Skills Required
- Seven years of experience as a systems administrator on programs and contracts of similar scope, type, and complexity.
- Bachelor’s degree in Math, Science, Engineering, Statistics, Engineering Management, or a related discipline from an accredited college or university.
- Five additional years of systems administrator experience may substitute for the bachelor’s degree.
- Experience configuring and administering TDM and VoIP telephone call manager systems, including Nortel Meridian PBXs and Cisco Unified Call Manager.
- Large-scale Cisco Voice implementation experience in multi-cluster environments and data networking infrastructure.
- Working knowledge of H.323 and SIP.
- Familiarity with Cisco UCS platforms, voice gateways, virtualization, and ESXi.
- DoD 8570 IAM Level 2 qualification.
- TS/SCI with polygraph security clearance.
AT&T Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about AT&T and has not been reviewed or approved by AT&T.
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Healthcare Strength — Health coverage spans medical, dental, vision, and mental health services, plus a personal healthcare team, wellness apps, and supplemental options such as fertility care, cancer support, doula services, and wigs for chemotherapy. These comprehensive offerings are portrayed as supporting a wide range of employee needs.
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Leave & Time Off Breadth — Paid time off includes vacation, holidays, sick days, caregiver time, parental leave, and adoption assistance, with some roles reaching about 23 days of PTO after several years. Community volunteer days and flexible time off options add further support for work-life balance.
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Wellbeing & Lifestyle Benefits — Employees receive sizable service discounts like 50% off most wireless plans and broadband, along with savings on travel, event tickets, and insurance. Additional workplace perks such as hybrid work models and relocation assistance contribute to overall value.
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