Summary
Overview
Work History
Education
Skills
Custom
Timeline
Generic

Mahamadou Sylla

London,London

Summary

Accomplished network engineer with extensive expertise in BGP, OSPF, and ISIS protocols. Proficient in configuring and optimising Juniper switches and routers, including SRX, ACX, EX, and MX series. Demonstrated ability in troubleshooting network issues and enhancing network performance using advanced skills in MPLS, RSVP, LDP, and nextgen firewalls such as Palo Alto. Adept at managing networking hardware configuration and ensuring seamless operations through comprehensive troubleshooting expertise. Career goal includes leveraging technical proficiency to drive innovative solutions in network engineering.

Experienced Network and Security Engineer skilled in designing robust network infrastructures and implementing comprehensive security measures. Enhanced network performance and reduced security breaches by deploying advanced solutions and proactive monitoring. Known for improving system reliability and ensuring seamless connectivity across global enterprises.

Offering strong foundation in IT with focus on network and security principles. Knowledgeable about troubleshooting, risk management, and system maintenance. Skilled in communication, problem-solving, and teamwork. Ready to use and develop analytical, technical, and security skills in network and security role. Seasoned professional focused on network and security engineering, specialising in designing and implementing secure, resilient network infrastructures. Capable of identifying vulnerabilities, enhancing system defences, and ensuring robust data protection through advanced technical expertise and proactive strategies. Skilled in safeguarding organisational assets while maintaining optimal network performance.

Overview

11
11
years of professional experience

Work History

Network and Security Engineer

Ocado Technology
Hatfield, Hertfordshire
08.2022 - 03.2025
  • Working with Juniper switches, routers, for customer network to design and configure
  • Configure, monitor and support the core network and edge network and services
  • Palo alto and Juniper SRX security for VPN to AWS and global protect remote access VPN
  • Deploying and configuring, monitoring edge devices using EX series switches and VLANs
  • Design, deploy Palo alto firewall including the next generation features using the Panorama
  • Supporting and monitoring network, making changes and doing migration and adding new service
  • Configure and support Juniper SRX firewall and Palo alto SNI filters, security policy and troubleshooting
  • Troubleshot complex network issues to restore functionality swiftly.
  • Delivered robust VPN solutions for secure remote access.
  • Coordinated software updates and patches; ensured minimal downtime during these processes.
  • Design and implementation of secure LAN and WAN infrastructure, resulting in improved network efficiency.
  • Troubleshot network issues and provided rapid solutions to limit downtime.
  • Optimised network operation through focused configuration and monitoring.
  • Recommended equipment and resource upgrades to improve network capabilities.
  • Configured networks according to set specifications.
  • Tracked network performance to identify weak points and implement improvements.

Principal network engineer

BAE System
London
03.2021 - 07.2022
  • Defence network project from start to end managing and supporting security and network
  • This including Configuration and supporting the network and security issues, and testing
  • L2 and L3 support and operations, monitoring and troubleshooting
  • Manage Juniper SRX firewall implementation, NAT, security policy url filtering
  • Deploy and configured Palo alto firewall, next generation features
  • Maintained network security by implementing updated firewall configurations.
  • Enhanced network performance with regular system checks and updates.
  • Maximised network security by configuring firewalls and optimising IP routing and switching.

Project implementation engineer

Timico
London
01.2021 - 03.2021
  • Company Overview: contract
  • Designing and implementing customer project including delivery, and testing
  • Core network configuration and support including the protocols MPLS/ISIS/BGP/RSVP
  • Using Juniper, Cisco, Fortinet, and Palo alto NG firewall products, advanced features
  • Juniper Network devices include: MX, EX, ACX and SRX
  • Cisco network devices include: ASA, Cisco routers and Switches
  • Contract

Core Network and Security Engineer

UK THREE NETWORK
London
03.2020 - 12.2020
  • 3rd Line support including migration from ASA to Palo alto firewall
  • 24/7 Core network support including of hour on-call duty
  • Deploy and manage the configuration and support for firewall, Palo Alto, ASA and Juniper SRX
  • Maintain routing and switching and the Protocols including the following: MPLS, Layer 3 VPN, Layer 2 VPN, IPsec, SSL, OSPF, ISIS, BGP, VRRP, VLANs
  • Deploy and support juniper SRX, ACX, MX, EX devices as well as Palo Alto
  • Network and security implementation: configuration, and monitoring
  • Troubleshot complex network issues to restore functionality swiftly.
  • Configured routers and switches optimally; achieved a balanced load distribution on servers.

Network Engineer

Yoti ltd
London
01.2020 - 02.2020
  • Deploying and configuring network devices including juniper switches, routers and
  • Firewalls, as well as protocols such as OSPF, BGP VRRP
  • Managed multiple projects simultaneously whilst maintaining high standards of workmanship.
  • Installed hardware components, ensuring optimal operation of the network infrastructure.
  • Assisted team members in understanding complex networking concepts, enhancing team productivity.

Service Delivery Engineer

EXPONENTIAL-E
London
05.2018 - 10.2019
  • Company Overview: London
  • Network and security implementation: configuration, and monitoring
  • Deploy, configure and manage ISIS, OSPF, BGP, VRRP, MPLS, RSVP
  • Firewall: Palo Alto firewall including next-generation features
  • Customer facing environment where we deploy extensively Juniper SRX and EX to
  • Connect multiple sites for a customer using VPLS and as well as provide cross connect or point to point connections
  • London
  • Successfully delivered on tasks within tight deadlines.
  • Demonstrated respect, friendliness and willingness to help wherever needed.

Network Support engineer

High Speed Office
London
12.2017 - 04.2018
  • Duties include deploying, maintaining, secured and troubleshooting network infrastructure devices, such as cisco routers, switches, ASA firewall and network monitoring software
  • Deploying and implementing OSPF, BGP, VPN, HSRP, VRRP
  • Working with internet service provider and telecommunication companies to maintain customers’ connectivity
  • Developed effective strategies to mitigate potential risks associated with complex networking tasks.
  • Collaborated with cross-functional teams to deliver optimal network solutions.
  • Reviewed existing procedures, implemented changes wherever necessary to streamline operations.
  • Troubleshot various hardware and software problems, ensured minimal disruption in daily operations.

Tag recruitment
04.2014 - 11.2017
  • Engaged in the designs, deployment and implementation of cisco switches and routers including wireless routers for different clients, configuring, troubleshooting and monitoring the network
  • Protocols involve OSPF, BGP, STP and HSRP as well as VLANs
  • Configure and troubleshoot network through occasional visit to the client’s site as well as remote support

Education

PGD - Security

Royal Holloway University of London
London

Juniper JNCIA, JNCDA, JNCIS-SP, JNCIP-SP -

Juniper Networks
London
06.2024

Palo Alto PCNSE -

Palo Alto
London
11.2020

Skills

  • BGP
  • OSPF
  • ISIS
  • Juniper switches
  • Juniper routers
  • Troubleshooting
  • Panorama
  • Palo Alto firewall
  • MPLS
  • RSVP
  • LDP
  • Juniper SRX
  • Juniper ACX
  • Juniper EX
  • Juniper MX
  • Linux

Custom

References Available upon request

Timeline

Network and Security Engineer

Ocado Technology
08.2022 - 03.2025

Principal network engineer

BAE System
03.2021 - 07.2022

Project implementation engineer

Timico
01.2021 - 03.2021

Core Network and Security Engineer

UK THREE NETWORK
03.2020 - 12.2020

Network Engineer

Yoti ltd
01.2020 - 02.2020

Service Delivery Engineer

EXPONENTIAL-E
05.2018 - 10.2019

Network Support engineer

High Speed Office
12.2017 - 04.2018

Tag recruitment
04.2014 - 11.2017

PGD - Security

Royal Holloway University of London

Juniper JNCIA, JNCDA, JNCIS-SP, JNCIP-SP -

Juniper Networks

Palo Alto PCNSE -

Palo Alto
Mahamadou Sylla