Tellabs Software Engineer Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 9 interview experiences · FREE TO READ
Candidate interview experiences
First-hand accounts from people who interviewed at Tellabs.
Tellabs
Software Engineer
Mid Average Negative experience No offer 7 rounds
Interview process
Recruiter call Technical screen Onsite
Interview formats
Technical Coding
I interviewed with 7 people. It was mostly professional, but a few interviewers were too theoretical and seemed to have big egos. None of them seemed very enthusiastic about the company.
Confirmed questions3 questions
- Can you explain the step-by-step network design for different protocols?
- Please write out a full Ethernet frame on the whiteboard.
- Please write out a full MPLS frame on the whiteboard.
Tellabs
Senior Software Engineer
Senior Average Positive experience Accept offer 4 rounds
Interview process
Recruiter call Phone screen Technical screen Onsite
Interview formats
Technical System Design
It was a few rounds of interviews. There was a pretty long wait between the first and second rounds, which turned out to be due to a management change. All the interviewers were really proactive and involved, which made for a good experience overall.
Confirmed questions1 question
- Can you design networking software?
Tellabs
Software Engineer
Entry Easy Positive experience Accept offer 2 rounds
Interview process
Recruiter call Technical screen Take home
Interview formats
Behavioral Technical
It was a two-stage process. First, I had a general discussion with two managers, and they did a basic check for programming. Then, in the second stage, I was sent to do a standard psychological test.
Confirmed questions2 questions
- Were there any questions about work experience, considering I was a recent graduate?
- Were the questions simple and general?
Tellabs Software Engineer Interview Questions
Quoted word for word from Tellabs interview reports.
“Can you explain whether the ARP layer is considered Layer 2 or Layer 3, and provide the reasoning for each classification?”
Read reports →“Can you explain the step-by-step network design for different protocols?”
Read reports →“Are there questions about protocols like SNMP, tunneling and MIBS?”
Read reports →“Can you explain how the OTN optical card is designed? Also, what can you tell me about OTN and SDH protocols? And what about your C programming skills?”
Read reports →“If you have Network experience, are you questioned on wimax and lte network architecture?”
Read report →“Can you design networking software?”
Read report →“Were the questions simple and general?”
Read report →“Can you describe your experience with linked lists and coding challenges related to them?”
Read report →“Were there any questions about work experience, considering I was a recent graduate?”
Read report →Formats, difficulty and experience
Across all 9 Tellabs interview reports.