Principal Member of Tech Staff-1026162DescriptionDon't miss this opportunity to join the company recognized byFortunemagazine as theWorld's Most Admired Telecommunications Companyand ranked #2 onDiversityInc'slist of2009 Top50 Companies for Diversity.As the largest communications company in the world, more than 120 million customers count on us every day to deliver the wireless, Internet, data and advertising services that fuel their businesses and connect them to their world.

You will find yourself connecting communications and technology with opportunities that will take you to places you never imagined.

Learn more about AT&T's cutting edge opportunities with a wide range of career paths in emerging and ground breaking technologies.

We're so much more than just a phone company!Entry into this title requires Technical Title Plan (TTP) Board Approval.

This position requires an individual with proven technical skills within a specific technology discipline.

Individuals attaining this technical level will have or be capable of exhibiting significant contributions in specific complex technical areas.

Their contribution can be external to the company but shall be primarily internal.

They shall be recognized in the company as a technical leader within a specific area and may lead projects of small to medium size and technical breath.

In addition, the individual will have worked or be capable of working on projects of high complexity, where analysis of data requires in-depth evaluation of various factors, using knowledge and expertise derived from strong educational background and progressive experience.

A PMTS candidate shall have a PhD in an approved field from an accredited university and a minimum of 4 years of relevant experience, or a Master's degree in an approved field from an accredited university and a minimum of 6 years of relevant experience, or a Bachelor's degree in an approved field from an accredited university and 8 years of relevant experience.

Supervisory: NoThe position requires in-depth understanding of the AT&T IMS network solution.

Protocol analysis skills are required for SIP, Diameter, HTTP, TCP/IP, and UDP. Experience with Call Generation test tools and scripting is required.

3 years demonstrated leadership at a senior engineering position in a VoIP environment is desired.

The job scope includes: 75% - Lead the requirements definitions and development of IMS VoIP test tools for lab and field usage.

25% Provide SME engineering and testing leadership for CVoIP IMS and UIC IT provisioning interfacesQualificationsRequired Qualifications: Entry into this title will require Technical Title Plan (TTP) Board Approval.

Candidate shall have a PHD degree in an approved field from an accredited university as listed in the job description aboveFive or more years experience with networks, network protocols, and IP networksCandidate must have a strong communication skills both verbally and written as well as strong problem solving skillsAbility to balance and prioritize work and work independently and as part of a teamPrevious experience as a system tester and experience in a lab test environmentExperience and expertise with the following protocols is required: SIP, Diameter, HTTP, TCP/IP and UDP.Experience with VoIP and TDM Call Generators is requiredExperience with testing IMS interface is required.

Desired Qualifications: Experience with any/all of following software tools: PHP, Perl, Action Script, Java, JavaScript, Linux, XML, CVS/SVN, Linux Shell Scripts, and OracleExperience with network access technologiesExperience troubleshoot layer 2 and layer 3 data networksAT&Tis an Affirmative Action/Equal Opportunity Employer, and we are committed to hiring a diverse and talented workforce.

EOE/AA/M/F/D/VJob-Research/LaboratoryPrimary Location-IL-WARRENVILLESchedule-Full-timeEmployee Status-Regular

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