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Seh A. Lymas |                                                                                                         865-210-2334 · Manassas, VA 20111


Quality-driven IT professional with over 10 years of extensive hands-on experience with diverse organizations including fortune 500 companies in large-scale data center environment managing cloud and physical network base services worldwide. Strong technical experience with the ability to design, install, configure, migrate, and maintain complex network infrastructure with global reach. Enrich with strong interpersonal, analytical and problem-solving skills that ensures critical events resolution while driving the organizations’ mission forward.​​


AWS CloudWatch, Datadog, EventBridge, Direct Connect, AWS VPN, VPC, Transit Gateway, S3, LACP, L2 ECMP, Ericsson Mediation Platform, Splunk, Instana, Network Manager, Routers, Switches (3750/3800/4500/6500/6800, etc), L2TP, TCP/IP, IPSEC, ATM, Linux, DIG, RAID, Dell, Brocades, Windows Server 2003/2008/2012 Management, Python, Active Directory, Enterprise Network Hardware, DMZ, ACLs, OSI, HTTP, SSL, VPN, Trunking, MPLS, Frame Relay, ATM, Traceroute, Virtualization, Migration, MTR, IAM, Cloud Formation, VPC, X.25, EIGRP, RIP, OSPF, BGP, DHCP, DNS, ISDN, GFI, RSA, PBX, IDS/IPS, VMWare, Hyper-V, VOIP, Aruba, Arista, Meraki, SBC, SIP, Volte, VLANS, LAN, WAN, SAN, MDS, QOS, Policy-maps, Palo Alto, SSO, DOS, SIEM, MACSec, ASA Firewalls, HTML, Nexus, Load Balancer, Workstations, Ethernet, Wireless, CDMA, EVDO, LTE, UTMS, HSPA, Windows 3x/9x/NT/XP/2000/vista/7/8/10, Cisco Phones, Microsoft Office Suite, Visio, Remedy Ticketing System, Cisco AnyConnect VPN, Dell KACE, Solar Winds, Wireshark, White boarding, etc.  


ALTRAN, CAPGEMINI 12/21 – Present



Provide expert level of vulnerability management support for DISH NETWORK 5G infrastructure in Amazon AWS in an Agile environment.

  • Lead Support Engineer in AWS with security vulnerability expertise.

  • Troubleshoot issues with AWS ELB, VPC, EC2, Cloud Watch

  • Analyze, define, diagnose, and resolve network security requirements and issues.

  • Manage and resolve advance support of network security issue.

  • Provide Subject Matter Expertise on Wireless Network Applications & Integrations.

  • Vendor Management - Liaison between DISH and vendors.

  • Coordinate and manage all levels of vulnerability in AWS infrastructure for vendors

  • Ensure security practices in the delivery of network services.

ALTRAN, CAPGEMINI 12/20 – Present



Provide Tier 4 OSS/BSS Wireless application support for LTE/5G Charter MVNO M2.0 architecture services: Ericsson 4G/5G VM Mediation platform, Wireless Back Office (WBO), and Amazon AWS in an Agile environment.

  • Lead Support Engineer in AWS with OSS/BSS expertise.

  • Troubleshoot issues with AWS ELB, VPC, EC2, Cloudwatch.

  • Analyze, define, diagnose and resolve network requirements and issues.

  • Build Dashboards and monitor alarms for AWS in Datadog platform.

  • Manage and resolve advance support of wireless network issue.

  • Provide Subject Matter Expertise on Wireless Network Applications & Integrations.

  • Vendor Management - Liaison between Charter and wireless vendors.

  • Coordinate and manage Incident reporting and change management.

  • Perform root cause application analysis issues originating from NOC team.

  • Design and implement procedures, alarms set-up, workflows processes for NOC and vendors (i.e., Ericsson, Exelacom).

  • Develop workflow processes and procedures for WTG Tier 4 Off-shore team.

  • Implement monitoring solutions via RSSX (Verizon), NBOP, Mediation Reporting, Splunk, Instana, and Datadog.

  • Pro-active analysis & preventive measure taken to ensure no surge in tickets during onboarding process.

  • Documenting processes the procedures, create MOPs / manuals (fix / triage) to minimize ticket AHT.

  • Ensure security practices in the delivery of network services.

AMAZON (2019 – 2020)


Manage individuals and businesses in transforming their computing infrastructures and applications into the Cloud environment. Provide advanced monitoring, troubleshooting solutions to customers along with replicating and reproducing issues in order to provide high standard resolutions for complex situations. Serves as the point of contact to AWS customers during critical network events, as AWS clients’ Consultants. 

  • Apply advanced troubleshooting techniques to provide unique solutions to customers' individual needs.

  • Work directly with Amazon Web Service architects to reproduce and resolve enterprise customers’ issues.

  • Provide feedback to internal AWS teams on how to improve services.

  • Drive customer communication during critical events.

  • Engage with and resolve customer’s technical issues via phone, chat or email.

  • Implement and worked with the following AWS services: Cloud Watch and Event Bridge, Direct Connect, VPC, VPN, Transit Gateway, Network Manager, S3, AWS Config, IAM, etc.

  • Experience in working with the following tools technologies:  Networking (DNS, TCP/IP), IPsec and SSL VPN, Load Balancing, Iperf, MTR, Routing Protocols, SSH, Network Monitoring/Troubleshooting tools.

AMAZON (2017 – 2019)


Support the scaling of several large-scale data centers operations along with daily capacity management and enable encryption on all link/circuits supporting customer traffic between Amazon equipment.  

  • Supported Project Lever to deliver encryption for customer traffic.

  • Managed Knoxs swapping of non-encryption routers with encryption routers.

  • Configured, staged, and swapped lever Knox devices (7772).

  • Troubleshoot fiber architecture, DWDM systems, and resolving johnny5 tickets.

  • Troubleshoot cabling infrastructure connectivity issues (patch panels and patch cord).

  • Implemented MACSec via Rock Racks to encrypt customer data. 

  • Provided mentorship and training for new hires.

  • Worked and exceeded SLAs against assigned trouble tickets via a directed workflow to minimized failure rates.

  • First line touch point for hardware troubleshooting and technical issues.

  • Performed regular server hardware repairs (drives, motherboards etc).

  • Carry out routine network, server hardware and OS related repairs.

  • Worked with cross-functional teams on a regular basis to complete routine work.

  • Adhered to security and safety best practices in the data center.

  • Participated in Data Center power & cooling events.

  • Participated in team meetings for metric analysis and daily/weekly goals achievement.

  • Identified and help create process improvements relevant to the data center environment.

  • Contributed to the development of other team members.

SYNOVUS BANK (2016 – 2017)


Responsible for supporting the application infrastructure, application deployment, performance tuning and updates services within a datacenter environment that impact millions of customers.

  • Implemented and managed fiber design for data center connections to 7ks, 9ks, and 5ks.  

  • Successfully managed the implementation of spanning tree, creating a loop-free environment for the Synovus footprint.

  • Configured and employed Virtualization technologies.

  • Configured firewalls, creating and implementing firewalls rules, building IPSEC tunnels, SSL VPNs, and more.

  • Developing and implementing guidelines for information security division.

  • 95% success rate in response and resolution to security/firewall issues.  

  • Coordinates project activities with contractors, developers, and consultants.

  • Subject Matter Expert for Solar Winds, managing all configurations and implementations.

  • Subject Matter Expert for F5 load balancer, configures, build, and implement all VIPs, Certificates, and profiles.

  • Worked with application owners to outline the installation of applications in the company’s environment, diagrams all network components associated with applications in both production and development.

  • Worked on complex application problems of diverse scope where analysis of situation requires evaluation and judgment. Evaluated new products. Monitored and controlled infrastructure performance in the areas of response, throughput, and availability. Monitored protocol compatibility and performs system tuning and make recommendations for improvements.



Manage IT network, computer systems, and datacenter in an enterprise environment to improve performance and maintained organization’s security:

  • Proactively managed and troubleshoot routers, switches, firewalls, and servers.

  • Maintained, analyzed, repaired, and upgraded network and computer systems.

  • Planned, designed, and implemented network and data center architectures.

  • Monitored and adhered to triple A’s guidelines.

  • Subject Matter Expert for Solar Winds.

  • Successfully managed transition from Dell SonicWALL to Cisco ASA.


SYSTEM TECHNICIAN Knoxville, TN (2014 – 2015)

Managed switching, data communications, and peripheral equipment associated with the Mobile Telephone Switching Office (MTSO): 

  • Managed, optimized, and troubleshoot servers, routers and switches producing seamless productivity for intranet users. Manage the advanced installation, operation, and maintenance of regional network elements, ensuring 100% integrity and quality. 

  • Produced 100% reduction in downtime and outages resulting in increased customer retention. 

  • Coordinated installation, testing, and troubleshooting of transmission facilities; fiber optics, OC48, T3, T1 and

  DSO, CDPD, ATM, OTN, CDMA Data, LTE, AWS, EWS, STP, OMP, desktop, and laptop PCs from multiple  

  vendor systems (Cisco, Juniper, Ericsson, and Lucent); resulting in network communication stability.

  • Implemented major transfer of 3G network to LTE (long term evolution), from origination to completion to include configuring, loading into OSS, achieving vendor licenses, converting old traffic onto the new platform and conducting network traffic analysis.

  • Established and achievement-driven career resulting in acceleration to increasingly responsible positions.

  • Working with OSS to implement Network Configuration and Management, Administering service delivery, activations and provisioning.

  • Optimizing service assurance by utilizing various backup procedures and implementing a well-rounded fault tolerance architecture by updating and resolving OSS related issues. 

SWITCH TECHNICIAN Birmingham, AL (2011 – 2014)  

Responsible for the advanced installation, operation, and maintenance of switching, data communications, and peripheral equipment associated with the Mobile Telephone Switching Office (MTSO). 

  • Coordinated installation, testing, and troubleshooting of transmission facilities (OC48, T3, T1 and DSO). Troubleshooting, upgrading, and administering multiple vendor systems (Cisco, Juniper, Ericsson and Lucent); maintaining system applications; ensuring quality customer service; and providing support to a varied user community. Upgraded daily logs with site-specific information; System backups; and composing clear and concise reports for system. 

  • Managed and implemented AWS project which resulted in increasing the bandwidth for customer utilization.

  • Established an achievement-driven career resulting in acceleration to increasingly responsible positions.


Successfully managed technical support for wireless customers, identified and analyzed network applications and connectivity issues, troubleshoot hardware and software issues for data cards, desktops, Laptops, and wireless devices, while providing superior and efficient customer service. 

  • Awarded employee satisfaction for advanced troubleshooting.

  • Earned promotions following demonstrated ability to quickly learned and master complex concepts.



Installed, configured, and troubleshoot satellite systems, phone systems, and satellite internet.

  • Managed twenty cable field service installation technicians.  

  • Responsible for team growth, development and trainings.

  • Hired, trained, supervised and coached technicians. 

  • Successfully implemented corporate and new technician training.

  • Produced second highest outputs units per day, maintaining trouble calls ratio below 5% quota.

  • Recognized top performers and recommendation for promotions.

  • Set budgetary goals, managing and proposing new technology for company’s growth. 


Master of Science (MS), Network Engineering and Security Management,

DePaul University, Chicago, IL, In progress


Bachelor of Arts (BA), Communication Art and Web Cognate

University of Alabama in Huntsville, Huntsville, AL


Associate of Applied Science (AAS), Network Engineering

Virginia College, Huntsville, AL


  • CompTIA A+ 

  • Network+ 

  • CCNA                                             

  • Security+                                  


  • MCSA

  • AWS Certification – in progress

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