Nelson Caseiro
McKinney,TX
Summary
A motivated and detail-oriented Network Engineer with expertise handling variety of vendor equipment and technologies, and implementing & supporting the infrastructure to serve organizational needs. Ready for a new position that involves all things networking and automation.
Overview
8
8
years of professional experience
1
1
Certification
Work History
Network Engineer II
Thales (Imperva)
10.2021 - Current
- Maintained global content delivery network (CDN) with more than 50 PoPs worldwide.
- Performed BGP traffic engineering to steer traffic within ISPs for anycast prefixes.
- Troubleshot and resolved routing issues reported by customers & NOC.
- Created Confluence documentation for the team for oneoffs or new solutions or services.
- Prepared MOPs to perform network maintenances, performs tasks such as upgrades.
- Edited and created Salt State files (SLS), using a mixture of YAML and Jinja2 to create pillars and templates for centralized configuration management.
- Used SaltStack for configuration management of the whole network, managed through a GitLab repository and using Git to track changes.
- Used Jenkins pipelines for configuration deployments across the network in a staggered.
- Responded to incidents through on-call rotation, and worked on a war room to implement mitigation.
- Tested and analyzed ISP routing prior to turn up to determine risk of suboptimal routing for anycast routes, and performed BGP traffic engineering to provide optimal routing.
- Maintained IP addressing and subnets through Netbox and Nautobot as source of truth.
Data Center Operations Engineer
Thales (Imperva)
05.2021 - 10.2021
- Provisioned and performed test & turn-up of several Internet circuits with various ISPs (NTT, Lumen, Telxius, & more) to expand edge capacity.
- Interacted with remote hands of various colocation datacenters around the world (Equinix, Telehouse, Interxion, CoreSite, & more) to execute remote activities, such as rack & stack and cabling.
- Prepared MOPs for new rack expansions in existing datacenters, preparing rack elevations and cabling instructions for remote hands.
- Ordered cross-connects to connect to ISPs and private peers.
- Troubleshot and repaired network links experiencing errors.
- Coordinated with remote hands on preparing new cage deployments for PoP expansions, getting new racks up with all equipment installed, cabled correctly, and functional.
Network Engineer
Global IP Networks
Plano, TX
05.2016 - 05.2021
- Established Internet and transport links in a data-center environment.
- Managed and maintained the data-center network, ensuring high availability and reliability with 99.999% SLA to mission critical infrastructure.
- Managed public cloud network environment, ensuring high availability and security between VMs.
- Managed both company internal and external client requests via ticketing systems such as Ubersmith.
- Established BGP peerings with clients and Internet Exchange peers.
- Performed zero-downtime network migrations.
- Designed and deployed network solutions for clients to fit organizational needs.
- Developed a combination of BASH scripts, Python scripts, and Ansible playbooks to deploy a variety of automation needs, such as backups, deployments, RBL's, and prefix-list and as-path access-lists for different peers based on IRR AS-set's.
- Managed and maintained Linux servers that had been used for network purposes, using both Ubuntu and CentOS/RHEL distributions for running software such as Zabbix and Ansible.
- Managed IRR route objects and AS-set's for our ASN.
- Troubleshot any network issues clients would be experiencing, from both a service provider and client network perspective.
Education
Associate of Science - Computer Networking - Infrastructure
Collin County Community College
05.2018
Skills
- Strong knowledge in Routing and Switching protocols
- Strong analytical skills
- Strong collaborative skills
- Excellent problem solving skills
- Excellent troubleshooting skills
- Open about ideas
- Excellent attention to details
- Passionate in networking & new technologies
- Fluent in Portuguese
- Automation tools and scripting
- Documentation Writing
- IP Addressing and Subnetting
Certification
- Juniper Networks Certified Internet Associate (JNCIA) - Junos
- Juniper Networks Certified Internet Associate (JNCIA) - Data Center (DC)
- RG Nets Fundamentals
- Microsoft Technology Associate (MTA): Networking Fundamentals
- CISCO Certified Network Professional (CCNP): Routing & Switching (Expired)
- CISCO Certified Design Associate (CCDA) (Expired)
Skills
- Expert knowledge using Cisco IOS, Juniper JUNOS, Arista EOS, and MikroTik RouterOS in service provider, enterprise, and content delivery networks.
- Experienced in Palo Alto Firewalls, Juniper SRX, Dell SonicWALL, Fortinet FortiGate, Barracuda CloudGen Firewall, Cisco Meraki, and pfSense.
- Experienced using Ruckus ICX (formerly Brocade ICX) TurboIron switches.
- Experienced in using Ansible for network automation in different platforms, and generating configuration based off Jinja2 templates.
- Experienced in the following operating systems: Ubuntu, CentOS/RHEL, Windows.
- Experienced using the following hypervisors: VMware ESXi, Citrix XenServer, Proxmox/KVM, Microsoft Hyper-V.
- Proficient in the following programming languages: Python, Bash.
- Strong knowledge using Docker and using compose files.
- Strong knowledge using Git in repositories used by several teams.
- Expert knowledge in implementing and troubleshooting BGP in service provider and content delivery networks.
- Strong knowledge of deploying and troubleshooting OSPF in service provider network.
- Strong knowledge of deploying and troubleshooting IPsec tunnels between third-party vendors and clients.
- Understanding of VXLAN and knowledgeable in its deployment in Arista EOS.
- Knowledge of utilizing MLAG in Arista EOS.
- Experience handling and troubleshooting fiber circuits.
- Experience utilizing ADVA & FS DWDM MUX/DEMUX for increased link capacity.
References
References available upon request.
Timeline
Network Engineer II
Thales (Imperva)
10.2021 - Current
Data Center Operations Engineer
Thales (Imperva)
05.2021 - 10.2021
Network Engineer
Global IP Networks
05.2016 - 05.2021
Associate of Science - Computer Networking - Infrastructure
Collin County Community College
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