Marc Hounsossou
Aubrey,TX
Summary
IP Engineer with 7 years of experience in configuring and troubleshooting complex network infrastructures. Skilled in routing and switching with a focus on reducing downtime and ensuring high availability for customers.
Overview
8
8
years of professional experience
Work History
Associate Engineer, Technical Support
T-Mobile USA
02.2021 - 04.2024
- Troubleshot LAN/WAN (Layer 1, 2, 3) connectivity issues in the backbone network, minimizing downtime.
- Acted as the primary point of escalation to resolve complex incidents and maintain service continuity.
- Collaborated with vendors (Checkpoint, Palo Alto, Juniper, A10, Cisco TAC) to address hardware, software defects such as bugs and outages.
- Engaged with customers as needed to ensure that their services are running smoothly according to their business requirements.
- Provided high-touch support managing NGFW by troubleshooting existing and non-existing policies that either permit or deny traffic for production and pre-production flows based on App-ID, User-ID and Content-ID.
- Guided customers to use JIRA to request non-production flows to be integrated into production.
- Troubleshot device authentication issues using Cisco ISE and end-device NAC compliance failures.
- Troubleshot Out of Band management devices to ensure their reachability in order to access critical core network devices in case of total loss of connectivity.
- Addressed DNS issues using Infoblox and Secure64.
- Facilitated the resolution of customer-impacting issues by joining troubleshooting bridges for P1/P2/P3 incidents.
- Led training sessions for junior team members, enhancing team performance in handling incidents independently.
- Executed weekly review to measure metrics and performance for management and business stakeholders.
NOC Technician
T-Mobile USA
03.2016 - 01.2021
- Monitored network alarms, identifying and escalating issues impacting service.
- Initiated and tracked trouble tickets for network incidents, driving timely resolutions.
- Worked closely with transport vendors to resolve fiber optic issues and supported hardware replacements through RMAs.
- Coordinated repair efforts for hardware and cabling failures, ensuring minimal network downtime.
- Escalated complex incidents to senior engineers for further investigation.
- Provided network redundancy updates to management during outages.
Education
Bachelor of Science - Information Technology System
The University of Texas Rio Grande Valley
Brownsville, TX12-2014
Associate of Applied Science - Computer Information Systems
Texas Southmost College
Brownsville, TX05-2013
Skills
- Networking & Protocols:
- OSI Model, TCP/IP, UDP, DHCP, DNS
- Routing protocols: OSPF, EIGRP, BGP, MPLS, VRF
- VPN technologies, IPSec, NAT, BFD, TACACS, RADIUS, IPS/IDS
- Hardware:
- Cisco ASR9K, 4500, 2900, N3K, N5K, N7K, N9K, NCS5500
- Alcatel Lucent, Aruba Networks, Lantronix, OpenGear
- Security & Firewalls:
- Checkpoint (21k, 44k, 64k), Palo Alto Firewall, Juniper Firewalls
- A10 Load Balancers, F5
- Transport:
- 400 GigE, 100 GigE, 10 GigE, T1
- Monitoring & Tools:
- Infoblox, Secure64, MFNA, Splunk, Sevone, Grafana
- NetBrain, Wireshark
- Other Technical Skills:
- HTML, CSS
- Proficient in MS Office Suite (Word, Excel, PowerPoint)
Certifications
- Cisco Certified Network Associate (CCNA): Link to certificate in header - Exp 2/2028
- Cisco Certified Specialist - ENARSI (300-410) — In Progress
Implementing Cisco Enterprise Advanced Routing and Services (ENARSI) Cisco U training completed - 2/2025
Timeline
Associate Engineer, Technical Support
T-Mobile USA
02.2021 - 04.2024
NOC Technician
T-Mobile USA
03.2016 - 01.2021
Bachelor of Science - Information Technology System
The University of Texas Rio Grande Valley
Associate of Applied Science - Computer Information Systems
Texas Southmost College
Similar Profiles
Soulan GoldenSoulan Golden
Rural Indirect Sales Manager at T-Mobile USARural Indirect Sales Manager at T-Mobile USA
ALEX YEPESALEX YEPES
Sr. Program Manager at T-Mobile USASr. Program Manager at T-Mobile USA
KENNETH R. DAVIS JR.KENNETH R. DAVIS JR.
ACCOUNT ASSOCIATE at T-MOBILE USAACCOUNT ASSOCIATE at T-MOBILE USA