Rodolfo Nützmann

Where it started

Before the formal career, there was the curiosity. Through the early 1990s I was importing and assembling computers, running and using bulletin board systems, and working across DOS, Unix, Linux, Netware, early Ethernet, X.25, and dial-up internet. By 1995 that hands-on work had become a first formal role building an electronic-data-interchange system. The thread from then to now is the same: take something genuinely complex and make it work, then make it make sense to someone else.

The path here

My career began on the vendor and implementation side in 1996 and widened from there into systems audits and design, technical and sales enablement — three decades in enterprise networking, two of them hands-on before I focused fully on training. That depth and range is the reason the training lands: I have built, broken, and fixed these systems in production.

1. 1996 – 2000Cabletron Systems · São PauloNetwork engineer and certified instructor. Non-Ethernet and Ethernet networks, campus networks, IP routing.
2. 2000 – 2002Riverstone Networks · Santa Clara, CaliforniaProduct support engineer and knowledge-base coordinator in California. Gigabit Ethernet, metropolitan area networks, IP routing, BGP. Third-level escalation, customer scenario recreation, and regression testing.
3. 2003 – 2004Cisco Systems · BrasíliaNetwork consulting engineer in Brasília, acting as the single point of contact for two of Brazil's federal customers: SERPRO, the government's data-processing agency, and ECT-Correios, the national postal service. Escalation and customer-satisfaction management.
4. 2005 – 2007Enterasys Networks · São PauloNetwork engineer and instructor. Enterprise networks, IP routing, user access control and NAC, IDS and IPS.
5. 2009 – 2010Juniper Networks · São PauloChannel support engineer and instructor for enterprise switches and firewalls. Technical sales enablement and Junos-SRX operations training.
6. 2011 – 2014Implementation · via CYLK, TDec and direct engagementsDeploying and integrating security and network platforms for end customers, mostly under contracts held by resellers and occasionally direct. Juniper SSG, SRX, EX and Secure Access - the line that became MAG and then Pulse Secure - alongside Cisco ASA, Palo Alto Networks next-generation firewalls, and Extreme Networks Summit and BlackDiamond switches.
7. 2015 – 2019F5 Networks · channel (Westcon, ScanSource)Channel-facing sales and pre-sales engineering for F5, providing technical enablement, proof-of-concept execution, and partner training across distribution. Secondary work in the same years covered FireEye, McAfee, VMware, Ixia and Keysight, and Pulse Secure.
8. 2020 – presentRed EducationAuthorized training instructor delivering official certified courses across F5, Fortinet, Extreme Networks, and Netskope to organizations worldwide. The teaching years began in 2020 with F5 courses as a fixed contractor to an authorized training centre in Brazil, widened in 2021 to Extreme Networks delivery on demand for authorized partners in Brazil and Poland, and settled at Red Education - contracted from 2021, full-time from September 2023.

The History

Three eras, one through-line: take something genuinely complex, make it work, then make it make sense to someone else.

1. Era 1Before 1996The curiosityHam radio, a cloned Sinclair, bulletin boards, a stolen dial tone, and the first academic internet — the whole apprenticeship, before any of it was a job.
2. Era 21996 – 2020The practitionerTwo decades inside the networking and security industry, building, breaking, and fixing the systems that later became the curriculum.
3. Era 32020 – presentThe instructorFull-time technical training, delivered globally, expanding platform by platform.