Technical Support Engineer applicants have rated the interview process at Fortinet with 3.2 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 66% positive. To compare, the company-average is 65.1% positive. This is according to Glassdoor user ratings.
Candidates applying for Technical Support Engineer roles take an average of 49 days to get hired, when considering 29 user submitted interviews for this role. To compare, the hiring process at Fortinet overall takes an average of 38 days.
Common stages of the interview process at Fortinet as a Technical Support Engineer according to 29 Glassdoor interviews include:
Phone interview: 24%
One on one interview: 18%
Skills test: 13%
Background check: 10%
Presentation: 10%
Personality test: 8%
Drug test: 7%
Group panel interview: 5%
IQ intelligence test: 3%
Other: 1%
Here are the most commonly searched roles for interview reports -
I applied online. The process took 2 months. I interviewed at Fortinet (Plano, TX) in Jan 2019
Interview
I applied online, got an email after 2 weeks to schedule a phone screen, the phone screen took about an hour, he asked a lot of basic networking and security questions. it was pretty straight forward stuff if you have done CCNA training.
Then i got a call the same week for an in person interview in two weeks.
The in person interview was with one engineer and the TAC manager, it took close to 3 hours, it was like the first phone screen but now they went into deep details, from TCP handshake to routing protocols to IPsec VPN tunnels, it was really deeper than i expected.
So i knew i didn't prepare well enough for this round.
so weeks went by and i didn't hear back from them, i emailed the hiring manager and he replied that they have not made a decision yet, so weeks when by again and out of nowhere i got an email asking for a second round of in-person interview, i knew this timei had to do better.
It was still the same format but i did a lot of labs before the interview to refresh my skills especially in IPsec IKE VPN which i was not doing a lot of in my present job.
So i went for the interview and came out on top this time. when i left after the interview i knew i had done well and they will get back to me lol. So before i got home from the location i got a call that i had aced the interview and that was it.
Good preparation was everything
Interview questions [1]
Question 1
Explain OSI Model with examples of a protocol on each layer, 3 way handshake, SSL VPN, IPsec IKE wireshark capture, static route, OSPF and BGP, VLANs, subnetting, a lot of port numbers, ACL and stateful firewall and lots of Networking and VPN questions
2.5 hours interview and really tough . In depth details needed and there will be follow up questions. Prepare well and then schedule interview . Do CCNP and then only apply for this job
I applied online. The process took 3 months. I interviewed at Fortinet in Nov 2025
Interview
I spent more than 20+ hours on 5+ interviews, including a 5 hour take home test and going to their office for 3 consecutive interviews. Then I waited 1.5 months for a rejection without explanation. No respect for our time.
Interview questions [1]
Question 1
Specific questions about processes that should be written down.
Great interview experience! The focus was on networking fundamentals like LAN, OSPF, TCP/IP, and the OSI model. The questions were technical but fair, testing both theoretical knowledge and practical application. A great way to assess networking expertise.