Senior Pre-Sales Network Engineer and Architect
Resume:
David J. Zimmerman
Riverview, Florida 33579
**********@***.***
OBJECTIVE
Pre-Sales Network Engineer/Network Engineer/Security Systems Engineer/Solutions Architect EDUCATION
Niagara University, Niagara University, New York 14109 CERTIFICATIONS
CCNP Security: April 2026
CISSP: January 2019 CCNA Security: August 2015
Cisco Certified Networking Associate (CCNA):
August 2014
Agilent Certified Expert (ACE): July 2001
Cisco Certified Security Professional (CCSP):
January 2007
Cisco PIX Firewall Specialist (CPFS): January 2007 Fortinet NSE 4 & SD-WAN: October 2018 Citrix SD-WAN certification: April 2017 Velo Cloud VCE Certification: June 2018 Cisco Viptela Routers TECHNICAL SKILLS
Hardware:
Calix C Series, Canoga Perkins, Checkpoint NGX (2200, 4000 & 12000), Cisco Routers (16, 17, 18, 25, 26, 35, 36 and 72 series), Cisco PIX Firewalls (500 series), Cisco ASA Security Appliances (5500 series), Cisco VPN Concentrators (3000 series), Cisco IPS (4200 Series), Palo Alto 3200 Series NG Firewalls, Fortinet Fortigates
Software:
Cisco IME, Cisco Security Manager, Cisco Security MARS, Microsoft Offce, Symantec A/V Systems:
Kali Linux, Cisco IOS, Cisco UTM, Dell UTM, DOS 3.3-6.22, Banyan 6.0, Novell Netware 3.1+, OS/2, UNIX, VAX VMS, Windows NT Server 4.0, Windows
Protocols:
ATM, BGP, EIGRP, Ethernet, FDDI, Frame Relay, IGRP, IP, IPX, OSPF, RIP, TCP, Token Ring, UDP, LTE and Wireless
EXPERIENCE
Uniti Fiber — Tampa, FL November 2023 -- Present
Sr. Sales Engineer
Working as a technical subject matter expert (SME) alongside the Sales Teams to drive sales growth for Uniti Fiber, a leading provider of infrastructure solutions including cell site backhaul, small cell for wireless operators, and Ethernet, Wavelengths and Dark Fiber for telecom carriers and enterprises. Responsible for customer-facing consultations with prospects, current customers, internal Engineering teams, and vendors to design quality, cost-effective network solutions. Dark Fiber Expertise: Design and implement comprehensive dark fiber solutions across Uniti's extensive 140,000+ fiber route mile network. Create customized dark fiber routes for enterprise clients requiring dedicated, secure, and scalable connectivity with virtually unlimited bandwidth potential. Develop IRU (Indefeasible Right of Use) proposals for long-term dark fiber agreements. Dark Fiber Network Design: Create detailed network topology diagrams for complex dark fiber implementations, including diverse route planning, fiber characterization specifications, and interconnection requirements between client equipment and Uniti's fiber infrastructure. Plan and specify optical amplification requirements for long-haul dark fiber spans. Technical Leadership: Supporting Sales teams on pre-sales activities by providing technical expertise and comprehensive network design solutions for fiber-based communication services. Train Sales teams on the technical aspects of dark fiber capabilities, limitations, and implementation requirements.
Cross-functional Collaboration: Serve as primary liaison between Enterprise Sales teams and other Uniti Fiber support teams including Operations, OSP Engineering, Network Engineering, and Service Delivery to ensure dark fiber implementations meet client specifications and timeline requirements.
Technical Solution Development: Conduct technical solution reviews, designs, and development of customer-specific network solutions across Uniti's extensive fiber infrastructure spanning over 140,000 fiber route miles.
Product Education: Train Sales teams on Uniti Fiber's complete product portfolio including Internet Services, Managed Networking Services, Voice Services, Dark Fiber solutions, and Colocation solutions.
Network Architecture: Design layer 2 and layer 3 network topologies, as well as Hosted VoIP, Unified Communications, SIP, PRI, and analog-based voice requirements for enterprise customers.
Project Planning: Create detailed network topology diagrams and review Network Build Cost analyses to ensure accurate project estimation that meets technical requirements for dark ber and lit fiber services.
Implementation Support: Assist Service Delivery Teams in implementing projects post-sale to ensure customer expectations are met, particularly for complex dark fiber and high-capacity wavelength service deployments.
Multi-client Management: Collaborate with multiple Sales Representatives simultaneously to help foster and close multiple sales opportunities while performing job functions independently with minimal supervision.
New Era Technologies — Remote Position March 2022 — October 2023 Sr. Solutions Architect
Function as Subject Matter Expert (SME) for the design and migration of legacy Cisco ISR WAN routers to Viptela SD-WAN architecture for multiple enterprise clients. Lead end-to-end planning, designing, and implementing data communication networks that align with client requirements for bandwidth, infrastructure, cost efficiency, and technical factors. SD-WAN Architecture: Design and implement Cisco SD-WAN solutions utilizing vManage, vSmart, vBond orchestration platforms with vEdges and cEdges for customer premises deployments.
Migration Strategy: Develop comprehensive migration plans for transitioning from legacy routing infrastructure to modern SD-WAN solutions with minimal disruption to business operations. Security Implementation: Design multi-tenant segmentation and security policies within the SD- WAN framework, including configuration automation for consistent policy deployment. Pre-deployment Testing: Conduct extensive POC lab testing for large Cisco customers prior to production deployment across SD-WAN networks to validate design and functionality. Advanced Network Design: Create multi-region meshed hub-to-hub routing architectures across regional data centers and implement SD-WAN controller disaster recovery mechanisms between pairs of data centers.
QoS Architecture: Serve as QoS Architect to develop and implement application-level quality of service policies ensuring critical traffic prioritization across the network. Service Chaining: Design and implement services chaining from edge site to edge site through centralized service appliances such as firewalls for optimal traffic flow and security management.
Syniverse — Tampa, FL August 2019 — March 2022
Solutions Engineer
Provided global pre-sales technical leadership and advanced support in identifying, creating, and integrating solutions across multiple complex solution areas. Worked directly with Sales teams to identify opportunities, providing technical subject-matter expertise throughout the selling process. Technical Leadership: Served as lead Solutions Engineering SME for multiple lines of business and product sets, presenting as an industry expert at global trade shows for multiple solution areas.
Customer Presentations: Delivered technical presentations to customers on product capabilities and commercial terms across Syniverse's portfolio, demonstrating deep technical knowledge of telecommunications infrastructure.
RFX Response Management: Collaborated with Development and business teams to create comprehensive responses to RFPs, RFQs, and RFIs, ensuring technical accuracy and alignment with client requirements.
Product Development: Liaised with product managers to provide feedback on business requirements for future products, releases, enhancements, and customized solutions based on market trends and customer needs.
Operational Support: Identified operational issues and escalated them to Customer Support and Operations teams, ensuring prompt resolution and maintaining high service levels. Portfolio Gap Analysis: Worked with Product Management and R&D to identify customer needs and product gaps in Syniverse's existing portfolio, driving product roadmap decisions. Wireless Technology Expertise: Applied expertise in wireless technologies including 3G, LTE, and 5G (SA and NSA) networks and associated signaling protocols (SS7, Diameter, and HTTP/2) to develop client solutions.
Private Network Consulting: Consulted with customers on Private LTE network use cases and benefits, helping them evaluate implementation options and value propositions. Windstream — Tampa, FL February 2018 — February 2019 Senior Sales Engineer
Designed telecommunications solutions for Windstream customers. Consulted on IT solutions including IP Routing and Switching, IP V4/V6, MPLS, VPN, SIP and TDM Voice, Data Center, Cloud Solutions, Virtualization, Managed Services, and UCaaS. Specialized in SD-WAN solutions from Velo Cloud, Meraki, and Fortinet. Functioned as subject matter expert on network services including SD- WAN, TDM solutions, LAN/WAN technologies and applications, SIP, customized ber, data center, and associated hardware.
Previous Experience 2000 — 2018
Sr. Technical Consultant — Ingram Micro (Remote) — June 2016 - January 2018 Security Consultant — Cisco Systems (Contract) — April 2015 - October 2015 Security Systems Engineer — AT&T (Tampa) — September 2012 - March 2013 Pre-Sales Network Engineer/Sales Engineering Manager — Verizon Business (Tampa) — September 2004 - May 2012
Pre-Sales Network Engineer — Sprint (Tampa) — February 2000 - December 2003 HONORS/AWARDS
Certificate of Achievement, Niagara University
Computer Science Department, May 4, 1991
U.S. Patent Award in Virtual Reality, September 2018 ACTIVITIES
Hockey, football, martial arts, reading.
REFERENCES
Available upon request.
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