About Nelson
Network & Security Engineer with 4+ years of hands-on experience designing, implementing, and troubleshooting enterprise network infrastructures across global environments.
Specialized in Cisco and Fortinet technologies, with strong expertise in routing & switching, SD-WAN, firewall management, and network security operations. Proven ability to work in complex, multi-site architectures, ensuring high availability, performance, and secure connectivity.
I am known for my strong problem-solving mindset, clear communication, and ability to work independently in fast-paced environments. I adapt quickly to new challenges, take ownership of projects, and consistently deliver reliable and scalable solutions.
Core Skills & Technologies:
Cisco (Routing & Switching, SD-WAN, Catalyst)
Fortinet (FortiGate, FortiManager, Security Fabric)
Network Security & Firewalling
VPN (IPsec, SSL)
Troubleshooting & Incident Response
Network Design & Implementation
Soft Skills:
Strong communication & client interaction
Analytical thinking & problem-solving
Ownership and accountability
Adaptability and continuous learning
Team collaboration in international environments
English
Native or bilingual
Portuguese
Native or bilingual
Spanish
Basic
Remote only
Primarily works remotely
Experience
- INGERSOLL RANDNETWORK & SECURITY ENGINEERINTERNET OF THINGS (IOT)September 2023 - Today (2 years and 9 months)Porto, Portugal• • Led network and security architecture for M&A projects across 400+ sites in EMEA, AM, and APAC regions.• • Designed and delivered multi-site SD-WAN solutions using Cisco and Fortinet• • Implemented LAN/WLAN segmentation improving security posture and fault isolation• • Produced architecture documentation, risk assessments and trade-off analyses• • Reduced network incidents through standardization and proactive monitoring• • Evaluated SASE / ZTNA and SD-WAN enhancements via PoCs.
- JOLERANETWORK & SECURITTY NSOC TEAM LEADERDIGITAL AND ITAugust 2022 - January 2023 (5 months)Porto, Portugal• • Identified and remediated network and security incidents across multi-client environments.• • Configure and monitor network and security tools.• • Incident response on technologies such as Fortinet, Cisco, Meraki, Barracuda, Veeam Backup & Replication.• • Monitor and troubleshoot Virtualization infrastructure as Azure, AWS, VMware.• • Monitor, record, and troubleshoot customer backup status.• • Triage, classify, and prioritize incidents.
- PORTUGUESE ARMYJUNIOR NETWORK ENGINEERDIGITAL AND ITFebruary 2016 - July 2022 (6 years and 5 months)Porto, Portugal• • Incident response-• • Design, configure and maintain our tactical networking infrastructure using CISCO equipment's, providing secure access to classification networks and service.• • Cisco Networking Academy trainer, IT-Essentials; Computer hardware and software. Network concepts, LANs, WANs, Ethernet, TCP/IP, subnetting.
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Education
- Fortinet FortiGate 7.6 AdministratorFortinet FortiGate 7.6 Administrator
- Forti managerForti manager