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John Halla Email & Phone Number

Principal Member of Technical Staff and Lead Development Engineer (Virtual-based Service Offerings) at AT&T
Location: Greater Chicago Area, United States 4 work roles 2 schools
2 work emails found @att.com 2 phones found area 312 LinkedIn matched
✓ Verified July 2026 4 data sources Profile completeness 100%

Contact Signals · 2 work emails · 2 phones

Work email j****@att.com
Direct phone (312) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Role
Principal Member of Technical Staff and Lead Development Engineer (Virtual-based Service Offerings)
Location
Greater Chicago Area, United States

Who is John Halla? Overview

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Quick answer

John Halla is listed as Principal Member of Technical Staff and Lead Development Engineer (Virtual-based Service Offerings) at AT&T, based in Greater Chicago Area, United States. AeroLeads shows a work email signal at att.com, phone signal with area code 312, and a matched LinkedIn profile for John Halla.

John Halla previously worked as Principal Member of Technical Staff /Lead Development Engineer (Virtual-based Service Offerings) at At&T and Principal Member of Technical Staff /Lead Development Engineer (Hardware Managed Services) at At&T. John Halla holds Telecommunications & Project Management Coursework from Golden Gate University.

Company email context

Email format at AT&T

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{first_initial}{last}@att.com
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AeroLeads found 2 current-domain work email signals for John Halla. Compare company email patterns before reaching out.

Profile bio

About John Halla

John Halla is a Principal Member of Technical Staff and Lead Development Engineer (Virtual-based Service Offerings) at AT&T. He possess expertise in telecommunications, microsoft office, wireless, management, customer service and 5 more skills. Colleagues describe him as "I have had the pleasure working with John as a tech in AT&T in past years. John was always helpful and a wealth of knowledge in trouble shooting. When issues arose, John was able to help decipher what the issue was and provided support in a resolution. A great person to help out!"

Listed skills include Telecommunications, Microsoft Office, Wireless, Management, and 6 others.

Current workplace

John Halla's current company

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AT&T
At&T
Principal Member of Technical Staff and Lead Development Engineer (Virtual-based Service Offerings)
Chicago, IL, US
AeroLeads page
4 roles

John Halla work experience

A career timeline built from the work history available for this profile.

Principal Member Of Technical Staff And Lead Development Engineer (Virtual-Based Service Offerings)

Chicago, Il, Us

Principal Member Of Technical Staff /Lead Development Engineer (Virtual-Based Service Offerings)

Chicago, Il

Key member of senior technical and leadership team directing testing and certifying of new solution offering transitioning from premise-based (hardware) model to a virtual-based, software solution for managed internet services (Universal CPE-uCPE, white box solution). Partner with internal and external software developers supporting agile development lifecycles. • Developed and implemented virtual-based solution, including testing the virtual instance and features, creating technical specifications, creating technical documentation and troubleshooting procedures. • Co-authored the design guide for new uCPE functionality for the Flexware service offerings.

Principal Member Of Technical Staff /Lead Development Engineer (Hardware Managed Services)

Chicago, Il

Directed testing and certification of routers for domestic and international deployments (T1 to OC 48 speed routers) for Managed Internet Service (MIS+) solutions for small to large global corporations. Led assessments and identified technical issues and bugs. Collaborated between vendors (Cisco, Juniper) and customers to resolve operational, implementation and security issues. Partnered with various router vendors globally to evaluate new products; assessed new products on cost and quality; assisted in integrating new vendor products into portfolio. Conducted stress and interoperability testing on firewalls, routers and networks. • Integrated new customers and tested, certified and deployed up to 3,000 routers a month delivering more than $800 million in annual revenue. • Regularly evaluated new products from 3rd party vendors to identify router solutions, which met customer expectations and SLAs, while reducing costs: led several new product integrations, which reduced hardware costs by 30-50%. • Conceptualized and directed a successful lab consolidation, automation and virtualization initiative. Reduced testing laboratories from five nationally to one, which substantially reduced testing budgets and maximized resources. • Conceptualized, developed and launched laboratory automation, scripting and new process flows, which reduced average router testing cycles from 10-15 weeks to less than six weeks consistently.• Developed Engineering & Troubleshooting Guide (ETG) for 14 different platforms. Conducted feature testing to create ETG for service delivery and service assurance channels. • Developed and conducted numerous training programs for new product offerings. Train and support Service Delivery, Customer Care, Provisioning and Maintenance teams nationally for new products, as well as deploying Engineering & Troubleshooting Guides. • Designed and implemented custom overlays for customers. Developed and tested custom features for customers.

Jan 2000 - Aug 2017

Lead Development Engineer (Router-Based Firewall Service)

Chicago, Il

Designed, assembled and implemented test laboratory to test and certify products. Member of senior technical team driving development, testing and general availability launch for new Router-based firewall services (security solution). Managed load-testing of Cisco products to determine impact enabling IOS firewall software. Utilized various test equipment and test modules, including ISDN, Frame Relay, Ethernet, X.25 packet, T1/T3 and IBR and Network General Sniffer. Developed engineering processes, methodologies and procedures. • Member of development team, which directed product development from concept to launch. Led development testing of Cisco IOS firewall feature set, including deploying equipment at customer site and monitoring implementations. • Researched, tested and certified new products; led evaluation of 2500 series routers to 1600 series and recommended 1600 series to reduce costs, while meeting all offering SLAs, saving more than $1,000 per router. • Leveraged technical knowledge of Cisco routers, COMPAQ servers, Ascend MAX 4004, Motorola ISDN BRI terminal adapters, Ascend Pipeline 75 remote LAN/WAN terminal adapters and NT/Solaris servers. • Co-led project to integrate design of test lab’s backbone network (Frame Relay, WorldNet, MIS and VPN). Partnered with resources for provisioning backbone connections. Developed test lab network drawings and documentation. • Led Testing Laboratory Expansion: Developed an innovative strategy to expand testing laboratory by 300% for less than $26,000 to meet rapidly increasing volume; partnered with internal real estate teams to secure new space; developed building and construction plans and new testing workflow. Led successful testing lab transition without downtime. • Project team member to develop, build infrastructure and deploy online technical college courses for internal and external users partnering with Golden Gate University. Designed and launched video network infrastructure.

Jun 1996 - Dec 1999
2 education records

John Halla education

Architectural Building & Construction Engineering Technology

Milwaukee School Of Engineering
FAQ

Frequently asked questions about John Halla

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What company does John Halla work for?

John Halla works for AT&T.

What is John Halla's role at AT&T?

John Halla is listed as Principal Member of Technical Staff and Lead Development Engineer (Virtual-based Service Offerings) at AT&T.

What is John Halla's email address?

AeroLeads has found 2 work email signals at @att.com for John Halla at AT&T.

What is John Halla's phone number?

AeroLeads has found 2 phone signal(s) with area code 312 for John Halla at AT&T.

Where is John Halla based?

John Halla is based in Greater Chicago Area, United States while working with AT&T.

What companies has John Halla worked for?

John Halla has worked for At&T.

How can I contact John Halla?

You can use AeroLeads to view verified contact signals for John Halla at AT&T, including work email, phone, and LinkedIn data when available.

What schools did John Halla attend?

John Halla holds Telecommunications & Project Management Coursework from Golden Gate University.

What skills is John Halla known for?

John Halla is listed with skills including Telecommunications, Microsoft Office, Wireless, Management, Customer Service, Testing, Team Leadership, and Microsoft Excel.

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