André Osaki

About

Network and Security Engineer with over 12 years of experience in Data Centers, ISPs and Cloud. Specialist in BGP, ASN, SD-WAN, Network Security and Fortinet, with a strong background in architecture, projects and advanced troubleshooting. Experienced in Multicloud environments, IP backbone, ISO 27001 and PCI DSS.

Bachelor's degree in Computer Engineering from Universidade Paulista (2010).

Outside of work, I'm a Jiu-Jitsu black belt (1st degree). The mat teaches me to stay calm under pressure, to think before acting, and to be disciplined and consistent, the same skills I use when handling critical incidents. Training is what gives me balance in everyday life, between body and mind and between personal and professional life.

Skills

BGP & OSPF
Traffic Engineering
Public ASN
NGFW / IPS
IPsec / SSL VPN
Fortinet (FortiGate, FortiManager, FortiAnalyzer, SD-WAN)
Cisco (Firepower, ASA, Catalyst, ISR, ASR, Nexus)
Juniper (SRX, MX, EX, QFX)
IP Backbone, IX.br, MPLS
Multicloud
IPv6 Dual-Stack
RTBH & Anti-DDoS
ISO 27001, PCI DSS, ITIL

Certifications

Cisco Fire Jumper – Field Engineer, Secure Firewall (2026)
Fortinet NSE4 (2024)
CCNA – Cisco Certified Network Associate (2017)

Experience

Jun 2022 – Present
Network & Security Project Analyst · Added

Led the migration from Cisco IWAN/DMVPN to Fortinet SD-WAN across 136 branches, with a HUB & SPOKE architecture, management via FortiManager/FortiAnalyzer, BGP and automation with Jinja.
Feb 2022 – May 2022
Senior Network Analyst · Ativy Digital

Network architecture and projects for private Cloud and MSP customers; last level of escalation; ASN, BGP, OSPF; Juniper SRX, Fortinet and SonicWall NGFWs.
Apr 2019 – Nov 2021
Senior Network Security Analyst · Ascenty

Migration of the BGP/IP backbone from Cisco/Nexus to Arista; BGP edge with Juniper MX204, IX.br and iBGP; Multicloud connectivity (AWS, Azure, Google, Oracle) over MPLS/IP.
Nov 2017 – Mar 2019
Network Security Analyst · IBM

LATAM MSS team managing over 1,500 Fortinet firewalls; SME for customers in the financial and payments sectors; Fortinet, Cisco, Palo Alto and Juniper NGFWs.
Sep 2013 – Jun 2017
Network Analyst · Ascenty

Network engineering and standardization for Data Center customers; restructuring of the network core with BGP/OSPF/full-mesh; IPv6 dual-stack planning.
May 2013 – Sep 2013
Network Analyst · Genesys Prime

Projects, RFCs and CAB; monitoring with Cacti, backups with RANCID, Fortinet firewall validation and deployment of corporate and guest WLAN.
Jul 2012 – May 2013
Pre-Sales Analyst · Multirede

Technical support to the sales team on infrastructure, security and networking solutions (Cisco, Fortinet, Imperva, Infoblox, Netscout, Skybox).
Jul 2010 – Jun 2012
Network Analyst · Ascenty

Implementation and operation of the Data Center's Cloud Computing network infrastructure; ASA firewalls, routing (RIP, EIGRP, OSPF), VLANs, STP, NAT/PAT.
Mar 2007 – Jul 2010
Network Technician I · Added Computer & Telephony

Switching, wireless and security projects, plus technical pre-sales; wired and wireless solutions from site survey to deployment and post-sales support.