Engineer Interview Questions in Portland, OR | Glassdoor

# Engineer Interview Questions in Portland, OR

Engineers are responsible for designing and building products. In an interview context, expect to be quizzed on your technical skills, and also evaluated for your ability to work as a part of a team to get things built. The specific questions you are asked will depend on what type of engineering position you are looking for. Try a specific engineering discipline, such as software engineer, electrical engineer, or mechanical engineer.

## Top Interview Questions

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### Supervising Production Engineer at WaferTech was asked...

Nov 17, 2012
 Only one tech question that wasn't a brain teaser- technical job related question was about line balance. There's 3 tools in a row with known stabilities. You know the second tool is very unstable but you need to meet demand.1 AnswerRun more product the previous day in the first machine the previous day.

### Systems Validation Engineer at Intel Corporation was asked...

May 6, 2010
 You have 8 pennies, 7 weight the same, one weighs less. you also have a judges scale. Find the one that weighs less in less than 3 steps.13 AnswersSet two pennies aside, put 3 on each scale and if they weight the same the lighter one is one of the other two, if not it is one of the three on the scale, repeat for the two or three remaining.A better answer: Split the 8 pennies into 3 groups of 3,3,2 pennies. Weight the first two groups of 3 pennies each. Case 1) - They weight the same. Therefore, take third group of 2 pennies and find the lighter coin. Case 2) Group 1 weights more than Group 2. Take group 2 (3 pennies) and pick any 2 out of 3. If they weight the same, then the third penny is lighter. Answer is trivial if they don't weight the same. It works for any scenario. Always split the groups in 3.It's a lot simpler than you'd think Divide the current number of coins by two and put them on both sides of the scale, remove the side that weighs more, and divide the lighter side in half, repeat so you start with 8: |||| |||| (4/4) || || (2/2) | | (1/1) Three steps, simple, logical, and and can get the right answer each time.Show More ResponsesNeil has it right. Dave - the question says less than three steps.Actually, Neil is still correct. The question does not say less than three steps, it says three steps. You must have misread it Tim. "Find the penny that weighs less in three steps." not less than, it's less in... And they both seem as though they would work and be relatively simple to perform, explain, and understand.I Can do it in one step: Look at the year on the pennies. If 7 pennies weigh the same it means that all 7 were manufactured either before or after 1982, when the mint changed the composition of the coin from solid copper to copper with a zinc core. the one that weighs differently was minted on the opposite side of 1982 as the 7 other pennies.To clarify and adhere to the the question better. the 7 pennies that weigh the same are pre 1982 and the one that weights less is post 1982 because zinc weighs less than copper. but like I said. the one step is to simply look at the date.Step One: Place two pennies aside and weigh 3 vs 3. Step Two: If they are equal then weigh the two other pennies. If a group of three pennies contains the lighter penny then cut one of them in half. Weigh the two groups of one and a half pennies. If its equal then the cut penny is the lightest, otherwise it is the whole penny on the lighter side.Neil's method works in 2 steps. On reflection, I think Bharat has the same method but did not explain it very well so it is hard to know.Uh...I read the question like this. "Find the one that weighs less IN LESS THAN 3 steps." It's pretty clear to me what it says. Matthew, that answer is AWESOME!!! Assuming of course they didn't add any crud like dirt, gum, etc. to the pre-1982 penny and 6 others to weigh equally, while the one remaining is newly minted. I'll remember that one.Dave, your answer is great. The feedback you got is a great lesson for us because you clearly answered the question and others need to ensure in an interview that they answer what is asked, pay attention and ask for clarification. You win Dave- great job!Great answer and explanation here: http://www.programmerinterview.com/index.php/puzzles/25-horses-3-fastest-5-races-puzzle/Oops sorry, the answer is here: http://www.programmerinterview.com/index.php/puzzles/8-pennies-find-lightest-7-equal/

### Software Development Engineer In Test (SDET) at Webtrends was asked...

Sep 26, 2012
 I was asked a pretty straight forward brain teaser during my last phone interview, which they said they don't normally do, but because I put that I was a logical problem solver on my resume they couldn't resist the opportunity to. It was the following "There are 20 different socks of two types in a drawer in a completely dark room. What is the minimum number of socks you should grab to ensure you have a matching pair?"9 Answers3 is the answer when the probability is 50% for either color."20 DIFFERENT socks of two type" In my opinion It's a brain teaser not a probability question. The answer is none. There is no sock alike, so you can't get a pair.3 is the answer no matter what... there are only 2 types, if you grab 3, you must have 1 of one type and 2 of the otherShow More ResponsesI'm not a mathematician, statistician or highly analytical but if you pick up 3 socks they could still be all the same type - even if the odds are 50%. Odds do not equal reality. So the only way to "ensure you have a matching pair"is to pick up 11 of the 20. This is the only fool proof guaranteed way to get a pair (in the real world and not the world of odds).All of the previous answers are somehow wrong or misleading. "Not-a-mathematician": the method you describe would ensure that you get 2 DIFFERENT socks instead of matching - and only in the situation that the ratio is exactly 50-50. "Anonymous on Oct 20 2012": No, you could also have 3 of the same sock after grabbing 3. "Anonymous on Oct 3": The probability has little to do here, while it is over 0%. THE REAL ANSWER: Given that there are 2 types, and you want to get a MATCHING PAIR (not 2 different socks) you must grab 3. When you have 3, you WILL have at least 2 of the same kind, since there are only 2 kinds available.Easy. I do this every morning when I get up. The answer is ONE PAIR. If you are like most people and have rolled the socks together in pairs when you put them away, there is no guessing and you just grab a pair of socks. I think it's more of a question about habits and prep. ;)It says "ensure" you have a pair. So all the probability answers are dead wrong. The person who said "The answer is none. There is no sock alike, so you can't get a pair" is probably correct. However if the question is to get two of the same type (of which there are two), then the only correct answer is 11. That is the MINIMUM number to ENSURE you have a pair--all probability aside.It says "ensure" you have a pair. So all the probability answers are dead wrong. The person who said "The answer is none. There is no sock alike, so you can't get a pair" is probably correct. However if the question is to get two of the same type (of which there are two), then the only correct answer is 11. That is the MINIMUM number to ENSURE you have a pair--all probability aside.It doesn't tell you that there are 10 and 10. There could be 19 and 1. But regardless: There IS a way to grab 2 socks and not have 2 that match. (one of each) But there is NO WAY to grab three socks and not have 2 of them match.

### Process Engineer at Intel Corporation was asked...

Sep 8, 2011
 Do you have any questions for me?3 AnswersTry to prepare a lot of questions for them.I also interviewed but haven't heard for 4 weeks. I hear they are in a hiring freeze. As long as you don't have rejection that should be okay. What group did you interview with?To the OP. Call them and ask about your status! Call the engineer who flew you out. From my experience if you don't prod them a bit you might not get the offer.

### Process Engineer at Intel Corporation was asked...

Oct 9, 2013
 A batch of wafers are getting cleaned in acid, aqueous and drying environments and a technician calls you in the middle of the night reporting that the wafers are having an unusual number of defects. How do solve the problem and what advice do you give the technician?3 AnswersBreak up the problem as much as possible to narrow down the solution. If you are on the right track, they will help you with the solution.My advice to the technician would be to clean the wafers with acetone, ipa and di water after the acid cleaning, as acid cleaning removes the inorganic impurities but not the organic impurities, acetone, ipa and di water will remove the organic impurities and hopefully the defects will be reducedMy advice to the technician would be to clean the wafers with acetone, ipa and di water after the acid cleaning, as acid cleaning removes the inorganic impurities but not the organic impurities, acetone, ipa and di water will remove the organic impurities and hopefully the defects will be reduced

### Software Engineer at Intel Corporation was asked...

Jul 13, 2010
 given #define A 2 + 3 #define B 2 printf("%d", A * B) what does this print? 3 Answers8Preprocessor replaces A and B and then operator * has precedence over +It's never a good idea to obscure the precedence... I'd require the 'A' to be wrapped like this: #define A (2+3) This will result in what is more likely the expected answer.

### Engineering at Intel Corporation was asked...

Aug 28, 2010
 If I told you I was thinking of a word in the dictionary and I could only answer yes or no to your questions, how would you find out the word using the least amount of questions2 AnswersDictionary is a sorted list, so one could use a binary search to find a word in it.Dictionaries are usually tries. How did you even get the offer.

### Physical Design Engineer at Intel Corporation was asked...

Apr 19, 2011
 CMOS Inverter , how to reduce the drive strength of Minimum size inverter7 AnswersDrive strength is basically the current carrying capability of a circuit. more the Ids, the lesser the drive strength is. Increase the aspect ration (W/L) of inverter. Usually done in 2:1 ratio (PMOS is slower and sized approx. twice of NMOS)"more the Ids, the lesser the drive strength is" This is exactly opposite of the actual fact...!the first answer is definitely wrong, to decrease the driving capacity, please size down the ratio!Show More ResponsesIt's a minimum size inverter so can't size it down. So may be we can increase the loading capacitance.To reduce a drive-strength at a minimum size inverter, it would be the easiest way to adjust the work-function at gate to adjust the threshold voltage.Use body effect, reverse biasing, this will reduce the drain current. another way can be change the gate input, according to the I-V characteristicFor those who are looking for insights into Intel, try Rooftop Slushie – where I got resume reviews, job interview info, and offer negotiation tips from verified tech employees. https://www.rooftopslushie.com

### D1DR Process Engineering at Intel Corporation was asked...

Jul 28, 2013
 Questions were basically from my PhD thesis: graphene devices . lithographic fabrication + etching + plasma generation 1.Describe about your research. What kind of photoresist was used? How does dry etching (RIE etch) works.. the setup. Any proble m during research and approach to solve. etcs. 2 AnswersWhat is your backgroundWithin how much time did you get your final offer after the on-site interview? Can u pass me that info @ dxd303@psu.edu

### Engineering Technician at Intel Corporation was asked...

Mar 18, 2009
 There are 25 Netware workstations on a rack, attached to one Netware server. You can only get 20 to see the network at a time. What steps do you take to troubleshoot this?2 AnswersThere are not enough licenses on the server for the number of clients.Just responding to the "most difficult interview" comment. As soon as I read the job title I knew it would be a difficult interview. Engineering Techs are that bridge position between the technicians and the engineers. As such there are always good techs applying. But engineers do the interviewing, predominantly. And if you want to join the big boys... well, they can put you through the obstacle course. Techs may be good or bad, engineers are usually very good (but some may not be high-output or can have strange personalities) but Engineering Techs at Intel are almost always excellent and once in, are highly valued by the engineers. That's my experience anyway. Good luck!
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