Tejas Networks R&D Engineer Interview Questions, Process, and Tips

Interview preparation tips for other job seekers - Prepare well ahead about the company you are applying for and whatever you use in your resume

Round: Test
Experience: Questions were asked from following topics:
• VLSI (concentrate more) : setup time, hold time , propagation delay ( EE619 must be read carefully , recommended book : Rabaey )
• Information theory ( unexpectedly ) : Information and coding theory
• Digital & analogue circuits
• Signal processing
• No questions were asked from electrical portion.
• A question was asked on cache memory concept and was almost asked in many companies.
• There were questions related to flip-flops, gates, laches, FSM these topics must be thorough.
Tips: This test was dependent on the amount of practice you've done. Since, for 60 questions 1 hour time is quite less so you must have your strategy under your sleeves. I was more towards technical side so I first completed the technical part in first 50 min. and then attempted 40-50 % aptitude portion. There were two profiles of R&D Software and Hardware engineer.
Duration: 60 minutes
Total Questions: 20+40

Round: Technical Interview
Experience: The panel was of 5 (2 software engineers, 2 hardware engineers, 1 HR manager) and duration was 45 minutes.
Questions were asked on:
• Bug converter
• What are enhancement and depletion type and MOSFETs?
• setup time, hold time , propagation delay
• Verilog HDL : blocking assignment vs. non-blocking assignment
• Which optimization approach do we follow while writing a code in HDL high level to low level or low level to high level?

General Tips: • For aptitude test your speed must be really fast.
• Before applying in the companies you must know do want to do core job or non-core job.
• EE 619 should be thoroughly studied.
• It is not necessary to answer the question correct at the first time but you must continuously think for the answer and must correct yourself with proper logic.
• You should not give ambiguous answers and must know to say don’t know when you really don’t know the answer.
Skills: Digital and analogue parts of VLSI, Digital circuits , Computer Network, Control Systems and Analysis , microprocessors
College Name: IIT- Kanpur

Round: Test
Experience: One written test. It contains three sections. The first two sections are of 20 minutes each and the third section is of 60 minutes.
Tips: You must be good in coding.
Duration: 100 minutes

Round: Technical Interview
Experience: The software technical interview revolved around software skills only for an ECE student. Questions were asked from c,c++, DS and OS (depth of which depends on the student himself).
General and basic knowledge in electronics was also tested like those in STDL, CAO , digital electronics. 
Thus a 40 minutes interview in software skills was followed by a 20 minutes interview on technical stuff in electronics.
Tips: You must be strong with your basics.

General Tips: Brush up all your basics in C, C++, data structures and operating systems.
Skills: Analyzing and problem solving skills., Good technical skills.
College Name: NIT WARANGAL