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Senior System Engineering

Oakton, Virginia

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Job Overview

Job Description:

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.

Our AT&T National Security organization supports our Nation’s Intelligence Community, operating and assuring critical voice, video, and collaboration services for the full spectrum of intelligence operations.

AT&T has an opening for a VoiceEngineer to support a professional services effort for a US Government customer in the Washington DC metropolitan area. This Voice Engineer role will be primarily focused on the design, development and operations of IP-based real-time communications application systems and services, as well as the underlying network infrastructure that supports it. The Sr. System Engineer will work in conjunction with a team of network and systems engineers to design, configure, implement, and maintain complex solutions that support the mission objectives of the customer. This role requires familiarity and experience with SIP standards and unified communication applications (i.e. Cisco, Avaya, Microsoft or equivalent). Seeking a highly motivated learner who demonstrates effective problem-solving skills, high attention to detail and a strong communicator. The candidate should be comfortable working both independently and with a team. Position is full-time on customer premise.

The job duties are as follows:  

Primary Responsibilities: 

• Provide system and network engineering support of IP-based real-time communications services to include, SIP trunking and integration, call routing policy design and configuration and enhanced messaging and automated call delivery capabilities.

• Manage various aspects of Sponsor’s enterprise IP communications networks and applications system through all system life-cycles phases, including planning, designing, evaluating, selecting, implementation and future migrations.

• Research and evaluate new/emerging technologies (hardware and software) or services and provide recommendations to the engineering team regarding the integration of these technologies into the Sponsor’s existing or future architecture.

• Support the engineering team and the program's leadership by managing the technical aspects of projects from inception to completion including technical assessments, design, integration, testing, deployment, and operations. 

• Assist engineering team with evolving current and next generation real-time communications technologies and solutions to support mission needs of the Sponsor.

• Create and maintain technical documentation (network designs, SOPs, User Guides, etc.) to support all areas of system configuration, administration, operation procedures and processes.

• Serve as Tier 3 resource for O&M trouble escalation and/or work orders for network services and voice network infrastructure devices.

• Occasional travel to different Sponsor locations domestically and within the Washington Metro Area

Required Clearance:

TS/SCI with poly (#ts/sci) (#polygraph)

Will be required to undergo additional High Risk Role screening (customer specific)

Required Qualifications:

The following skills / prerequisites are required: 

 - Approximately 3-5 years of working experience designing, configuring and implementing enterprise class real-time voice solutions to include:

·Experience with administering, configuring, deploying hardware such as session border controllers, TDM/IP gateways, softswitch solutions and/or IP PBXs. 

·Experience with administering, configuring, and deploying unified communications solutions such as integration of real-time communication technologies (voice, video, messaging) and/or mobile applications.

·Familiarity with VoIP architectures and technologies, particularly Session Initiation Protocol (SIP) and Secure SIP, RTP protocol families as well as the interworking of these protocols with traditional circuit switched networks and protocols networks (ISDN/PRI, ISUP and SS7). 

·Hands-on experience with administering, configuring, and deploying voice solutions such as testing, configuration and administration of call control applications, contact center, session border controllers (SBCs) and IP-based clients.  

- Proficiency with TCP/IP and other LAN/WAN protocols. Strong knowledge of fundamental IP routing and switching protocols (BGP, OSPF, STP, VTP) and network technologies (IPSEC VPN, NAT, QoS). Hands-on experience with Cisco and Juniper routing, switching and security products highly desired.  

- Experience with establishing small to medium sized network solutions including all phases from design, implementation and documentation. Familiar with methods for monitoring and troubleshooting network issues or outages when they arise. 

- Candidate must be strong in analytical thinking and problem solving to investigate and troubleshoot problems, inefficiencies, and performance issues. Candidate should also have strong interpersonal communication skills to collaborate effectively with team and Sponsor. 

- Experience with creating system and network architecture, topology and flow diagrams using MS Visio 

- Occasional travel to other Sponsor locations within the Washington Metro Area and domestic required.   

- Candidate should demonstrate a commitment to continuous learning/education both on and off the job to further enhance and develop skills and expertise.

B.S. in Computer Science, Information Technology, Telecommunications or similar.

       *Education requirements are flexible depending on experience

Desired Qualifications:

Professional Certifications: 

·Cisco Certified Network Associate (CCNA)

·Juniper Network Certified Internet Associate (JNCIA) - JUNOS

·SIP School Certified Associate (SSCA)

- Experience or working knowledge of database applications and administration (Oracle, MySQL, PostGres)

- Experience or working knowledge of system virtualization, VMWare or equivalent

- Experience with cloud services and connectivity with providers such as AWS, Azure or GCP

- Experience with scripting (Bash, Perl, Python, Javascript, PHP) and APIs (REST, SOAP)

- Basic to intermediate system administration experience with Linux platforms and CLI - Understanding of cybersecurity best practices and baselines configurations for system security (CIS, STIG)

Our Voice Network Engineer's earn between $140,000 - $200,000. 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)
  • 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:


Time Type:



Oakton, Virginia

It 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.

Job ID R-12719 Date posted 02/26/2024
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Invested in your satisfaction and continued success.

We take care of our own here (hint: that could be you). Our benefits and rewards mean we cover some of your biggest needs with some of the coolest offerings. We already think we’re a pretty great place to work. We’re just trying to rack up some bonus points.

Let’s start with the big one: Your work gets rewarded with competitive compensation and benefits. It really does pay to be on our team.


When it comes to priorities, we know family tops the list. For the moments that matter the most, you'll be there for them, and we'll be here for you.

Family Leave

Paid Time Off

Our people have class. Literally. We can help you out on approved education costs with our tuition assistance plan.


Here’s another reason to breathe easy: You and your family get access to excellent medical, dental and vision insurance options.

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The Hiring Process

Step 1

Complete a quick application online and check your status often.

Step 2

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Dress professionally and ensure good WiFi interviewing virtually.

Step 3

Job Offer

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Step 4

Welcome! Onboarding
and Training Begins

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