William Halloran

Experience

• 

  AT&T

  Jan 2000 - Jul 2020

  Project Managed a $2+M per year contract with an external vendor to develop and support a proprietary QA automation tool for IMS VoLTE/VoIP services. Managed a team of 20 domestic and offshore contractors. Provided ongoing support for 200+ service and platform QA engineers and Operations Support engineers, executing 800+K tests per month in lab-based testing and production support.Responsible for vendor contracts, including scope, budget, feature requirements, priorities, and software release schedules. Managed application security and user support.Increased feature delivery throughput and reduced schedules. Migrated the development team from an iterative development methodology to a full Agile approach. Led the effort to adopt JIRA for Sprint and Backlog management. Improved customer satisfaction, release management, timeliness of delivery, and customer focus. Established a more rigorous client requirements intake process. Ensured compliance with corporate security policies and reduced ongoing support costs. Standardized use of security tools across QA servers and VMs. Reduced risk of significant downtime and increased testing capacity. Improved tool reliability and capacity based on the sharing of servers across test domains. Show less Managed a team of 75+ employees and contractors responsible for test lab builds and support for AT&T’s service and platform test labs. Accountable for data networking, storage, and system administration for legacy and OpenStack/Contrail cloud-based labs.Significantly improved customer experience. Doubled closure rate of build and support tickets. Reduced ticket backlog by 50%. Reduced response time and time to closure for blocking issues. Managed escalations and troubleshooting across a broad range of technology. Grew the organization by 30%. Established a resource plan for my organization based on a detailed assessment of customer requirements, ticket volumes, and troubleshooting methods. Show less Managed a team of 10-15 network reliability and performance experts focused on improving service quality on IP and Mobility network infrastructure. Collaborated across Product Management, Service Development, Network Operations, and Vendors.Established industry-leading methodologies for network availability and performance.Significantly improved IP service availability from 99% to 99.99%. Established data collection of service outages and network element failures. Defined availability SLAs/SLOs to guide and track improvement. Increased service availability through a metrics-driven, Pareto analysis approach. Significantly enhanced operational processes and vendor delivery.Improved IP network performance by establishing service and backbone measurements for delay, loss, and jitter. Monitored service infrastructure and remediated low performing routes. Metrics served as a basis for customer performance SLAs and operational SLOs.Responsible for managing the system engineering, requirements, and testing of IP network performance systems. Established feature requirements and testing processes driven by lead performance analysts to ensure user requirements and system quality were exceptional.Managed the design and development of an internally developed system that integrated proprietary performance measurements from the IP backbone to the cell site with IoT capabilities. Supported security cameras, HVAC monitoring, remote access to cell site equipment, and remote provisioning of routers and eNodeBs. Automated staging, provisioning, and maintenance to support deployment to 4000+ cell sites. Show less

  • Lead Member of Technical Staff - Quality Assurance and Automation Development

    Dec 2017 - Jul 2020

  • Technical Director - Quality Assurance

    Mar 2016 - Dec 2017

  • Technical Director, Network Reliability and Performance Program Managemnent

    Jan 2000 - Mar 2016