Skip to main content
Close Search

Principal Member of Technical Staff

Warrenville, Illinois

Apply Now


Discover the undiscoverable.

"AT&T allows me to work on projects that will be seen by millions of customers."

Megan T. — Sr. Specialist, Software Engineer

"I find it incredibly rewarding to be out and see customers enjoying a product I spent my time perfecting."


Don't just imagine the future. Create it.

Innovation is the power to Think Big

We live our values without question or compromise.

Strategic Platform Teams

Join our digital transformation!

A Look at Our Design Team

A day in our UX/UI team.

Revolutionize Business in our Digital Team

Transform how employees and customers connect

Description: This position is part of the Mobility Core team that is responsible for design and planning, testing and production Tier 4 support for Nokia's USP/IMS applications and USP/IMS services.

Key Roles and Responsibilities:

  • Responsible for architecture, design, and technology introduction of Nokia's IMS Application platforms
  • Responsible for technology evolution between different hardware and software upgrade and support migration to new generation of technology
  • Responsible for platform capacity growth and ensure integration and connectivity design
  • Support service design and testing by working closely with service team to define and test IMS Application features and functionalities.
  • Work closely with vendors to define features, manage roadmaps and ensure timely delivery of releases
  • Be the lead of Certification Testing to define test scope, test cases, manage report and resolve issues.
  • Be the lab manager to manage certification environment and maintain configurations, documentation and best practices for platform
  • Responsible for FFA testing and validation efforts leading to GA of the platform
  • Be the tier 4 support for Nokia's IMS Application platforms including post production care, assistant of troubleshooting of production issues.
  • Work closely with other cross functional teams including service team, Project Management, TP&E, operations and other partner organizations to ensure successful delivery of all software, services and features
  • Be the security owner on the platform, ensure all security requirements are met and maintained

Job Contribution

  • Expert level technical professional. Technical SME within organization.
  • Contributes through development of advanced technologies/concepts with global reach or industry application.
  • Has direct impact on creation of technical products/services.
  • Bring innovation to the network that makes use of latest technologies and automation.
  • Provides technical expertise to peers across the company.
  • Actively promotes good working relationships. Develops mutually beneficial strategic alliances with peer organizations and vendors.
  • Serves as a role model, mentor or manager to junior employee and contractors.


Candidate shall have Bachelors of Science or MS or equivalent in an approved field from an accredited university and a minimum of 10 years of relevant design/testing experience in wireless/wireline industry.


  • Proven experience required in architecting, designing and deploying mobility/IMS network platforms and services in both COTS and a virtualized environment
  • Experience in 3GPP IMS platform architecture, design, testing and deployment
  • Knowledge and understanding of 3GPP architectures, IMS call flows and protocols, such as SIP, Diameter, HTTP- REST, etc.
  • Familiar with various AT&T IMS service and features
  • Demonstrated knowledge and hands-on experience in design, testing and deployment of Network Functions on different cloud and virtualization technologies like OpenStack as well as Containerization and Kubernetes.
  • Familiar with CICD automating tasks using Azure DevOps.
  • Ability to solve complex, critical problems related to significant and unique issues by using extensive research and interpretative thinking.
  • Clearly understanding AT&T security ASPR requirements

AT&T will consider for employment qualified applicants in a manner consistent with the requirements of federal, state and local laws

Job ID 2168439 Date posted 11/29/2021
Apply Now

Here are similar jobs, or

New Search

Discover more at AT&T

Sign up for job alerts, updates and more.

Interested In

  • Technology Operations, Warrenville, Illinois, United StatesRemove
  • Technology, Warrenville, Illinois, United StatesRemove
  • IT \ Engineering \ Technology, Warrenville, Illinois, United StatesRemove
  • DevSecOps, Warrenville, Illinois, United StatesRemove

AT&T Info and Alerts. Max 12 messages/month. Privacy Policy. You may opt-out at anytime by sending STOP to short code 20013. Msg & data rates may apply.

The values we live by.
  • Live True

    Do the right thing, no compromise.

  • Think Big

    Innovate and get there first.

  • Pursue Excellence

    In everything, every time.

  • Inspire Imagination

    Give people what they don't expect.

  • Stand for Equality

    Speak with your actions.

  • Embrace Freedom

    Press, speech, beliefs.

  • Make a Difference

    Impact your world.

  • Be There

    When customers & colleagues need you most.

Back to top