Melvin Johnston
Holts Summit,MO
Summary
Dynamic Network and Integration Engineer with over 31 years of extensive experience in technical support and performance testing, specializing in SIP protocol and UNIX systems. A visionary in network engineering, leveraging deep expertise in Oracle Acme Packet SBCs and TITAN multi-protocol signaling platforms to drive innovation. Committed to enhancing network integration capabilities through strategic implementation and innovative solutions, ensuring seamless operations and improved connectivity across diverse environments. Proven ability to adapt to evolving technologies while maintaining a focus on delivering exceptional results.
Overview
42
42
years of professional experience
Work History
SR. SYSTEMS RELIABILITY ENGINEER
T-Mobile
04.2020 - 10.2025
- Instrumental in design, integration and deployment of new 6500 Oracle (Acme Packet) Session Border
Controllers across two production locations and one lab location. - Lead the integration of the Sprint call center environment with the T-Mobile call center environment.
Essential in the routing engine redesign to incorporate the routing engine into the SBC environment utilizing
SPL routing and removing the Titan.Ium (NetNumber) TITAN platform. - Coordinated decommissioning of Titan.Ium (NetNumber) TITAN multi-protocol routing-signaling platform
deployed on new 6500 SBC deployment. - Fundamental in traffic removal and decommissioning of legacy Sprint call center environment.
- Analyzed system performance data to identify bottlenecks, resulting in optimized resource allocation and
improved operational efficiency.
TECHNICAL SUPPORT ENGINEER III
Sprint
01.2015 - 04.2020
- Lead Engineer supporting Call Center Communication platform.
- Instrumental in design, integration and troubleshooting of Oracle (Acme Packet) Session Border Controllers
deployed across two production locations and one lab location. - Subject matter expert on Titan.Ium (NetNumber) TITAN multi-protocol routing-signaling platform.
- Provided exceptional technical support by troubleshooting issues, ensuring rapid resolution and enhancing
customer satisfaction. - Streamlined the ticketing process, reducing response times and improving service efficiency, leading to
noticeable gains in team productivity.
TECHNICAL SUPPORT ENGINEER III
Sprint Nextel
10.2008 - 01.2015
- Lead Engineer supporting Call Center Communication platform.
- Instrumental in design, integration and troubleshooting of Oracle (Acme Packet) Session Border Controllers deployed across two production locations and one lab location.
- Subject matter expert on Titan.Ium (NetNumber) TITAN multi-protocol routing-signaling platform.
- Provided exceptional technical support by troubleshooting issues, ensuring rapid resolution and enhancing customer satisfaction.
- Streamlined the ticketing process, reducing response times and improving service efficiency, leading to noticeable gains in team productivity.
PERFORMANCE TEST ANALYST III
Information Technology Group
04.2007 - 10.2008
- Production engineer/test analyst for Sprint MGX Platform.
Configure, validate, and test all configuration aspects on equipment prior to production. - Responsible for operation and maintenance of all MGX Platform related equipment.
- Configure new endpoints, new protocols, and dial plan design and implementation.
- Responsible for Application Upgrades and Patch loads as well as implementation and configuration of new
feature additions and enhancements.
SR. SWITCH ENGINEER
TruePosition
03.2004 - 04.2007
- Test engineer for Wireless E911 project.
- Test T1s utilizing T-Berd communications test set and equipment software based test platforms.
- Install and test E911 wireless location equipment.
Integrate and commission E911 wireless location equipment onto live market network. - Perform Customer Acceptance Testing for entire network.
Perform software upgrades and configuration changes on all network elements. - Maintain performance and configuration of all servers, routers, and switches.
- Troubleshoot and repair network and equipment issues.
Oversee and assist drive testers and field technicians with daily assignments. - Collect and evaluate drive test data, alarm reports, and equipment inventory to incorporate into daily
reports. - Monitor network via EMS and SCOUT client servers.
NETWORK TECHNICAL SPECIALIST
Sprint
04.2002 - 02.2004
- Floor Supervisor for Special Service Operations Maintenance call center.
- Ensure all customer maintenance tickets are processed efficiently.
- First level for all internal proactive and reactive escalations.
Subject matter expert and first level of support for all systems and procedures. - Maintain proper manning for various ACD queues.
Coach associates on discrepancies in procedure.
Manage and track all Major Outages and assign proper resources. - Ensure all circuits are tested utilizing REACT 2001.
Assist in training new associates and in communicating proper procedure for new processes.
SR. NETWORK OPERATIONS SPECIALIST
Sprint
04.2000 - 04.2002
- Lead technician for Nortel DMS250 switch site.
- Coordinated and oversaw installation and turn up of first fully Succession Nortel DMS250 switch.
- Responsible for all switch related troubles and completing Call Thru Test Plans.
- Testing and turn up of new circuits utilizing REACT 2001.
- Analyze and correct equipment and circuit problems associated with customer complaints.
- Assist outside entities with troubleshooting and repair of co-located equipment.
- Respond to alarms associated with various switching/ATM/frame relay/DACS equipment.
- Complete cross-connect and wiring associated with new DS1, DS3, OC3, OC12, OC48, and OC192 circuit
additions. - Perform hardware and software upgrades.
- Assist and train new and less experienced personnel.
- Perform all required daily routines and periodic maintenance for switch operations center.
SR. NETWORK OPERATIONS SPECIALIST
Sprint
06.1998 - 04.2000
- Responsible for Operation, Administration, and Maintenance of International Gateway elements for Iridium
North America. - Respond to alarms associated with Switching and RF Gateway elements.
- Investigate congestion and circuit issues and redirect call traffic if needed.
- Troubleshoot and repair equipment problems associated with customer complaints.
- Monitor call traffic and volume by means of E1 monitors and communication analyzers.
- Perform routing translations for new circuit turn ups.
Ensure links and routers for Gateway Interface Equipment are operational. - Perform hardware/software upgrades and routine periodic maintenance.
- Generate and maintain system performance reports.
SYSTEM PERFORMANCE ENGINEER
PrimeCo Personal Com.
02.1996 - 03.1998
- Responsible for monitoring circuit usage through Operation Maintenance and Control - Radio graphical
user interface. - Monitor cell site performance for CDMA based cellular infrastructure system.
- Regional supervisor over four cell site technicians.
- Monitored 35 Motorola cell sites and recorded all performance parameters daily.
- Provided installation crews with necessary information for proper installation of base station equipment.
- Troubleshoot failures related to CDMA and GPS circuitry.
Respond to customer related as well as unplanned service outages. - Perform drive test of prospective and existing sites to determine coverage and make adjustments to
equipment.
COMM TECH 3
Motorola
06.1993 - 02.1996
- Responsible for troubleshooting and repair to component level of cellular phones failing production line
testing. - Worked with design engineers to incorporate and test new product lines and features.
- Assisted in developing automated test programs for factory test platform.
- Create and suggest solutions to process and production related issues.
INSTRUCTOR E-5
US Navy
09.1989 - 01.1993
- Taught electronics and communications theory for the US Navy's Electronics Technician class A school.
- Areas of study included HF/UHF communications, Power and Control circuits, and Shipboard Communication systems.
- Lead technical writer in charge of developing new curriculum, changes to existing curriculum, and test questions.
ELECTRONICS TECHNICIAN 2 (E-5)
US Navy
03.1984 - 09.1989
- Responsible for maintenance and repair of shipboard HF/UHF communications, surface search radar, helicopter navigation, and interrogation/identification systems.
- Supervised and trained junior technicians responsible for equipment maintenance.
Timeline
SR. SYSTEMS RELIABILITY ENGINEER
T-Mobile
04.2020 - 10.2025
TECHNICAL SUPPORT ENGINEER III
Sprint
01.2015 - 04.2020
TECHNICAL SUPPORT ENGINEER III
Sprint Nextel
10.2008 - 01.2015
PERFORMANCE TEST ANALYST III
Information Technology Group
04.2007 - 10.2008
SR. SWITCH ENGINEER
TruePosition
03.2004 - 04.2007
NETWORK TECHNICAL SPECIALIST
Sprint
04.2002 - 02.2004
SR. NETWORK OPERATIONS SPECIALIST
Sprint
04.2000 - 04.2002
SR. NETWORK OPERATIONS SPECIALIST
Sprint
06.1998 - 04.2000
SYSTEM PERFORMANCE ENGINEER
PrimeCo Personal Com.
02.1996 - 03.1998
COMM TECH 3
Motorola
06.1993 - 02.1996
INSTRUCTOR E-5
US Navy
09.1989 - 01.1993
ELECTRONICS TECHNICIAN 2 (E-5)
US Navy
03.1984 - 09.1989