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DC Energy
www.dc-energy.com Vienna, VA 16 to 50 Employees
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DC Energy Interview Questions & Reviews

Getting the Interview  12 Interviews

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Interview Experience  10 Ratings

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Analyst at DC Energy

No Offer – Interviewed in Washington, DC Oct 2011 – Reviewed Nov 11, 2011

Interview Details – Applied through university career services, then got offered an interview. First round interview was about half and hour, a computer science question, algorithm-based. Later that night got a phone call offering me a 2nd round interview the next day. That was 2 45-minute interviews back to back, both were much more quantitative in nature. Also got to ask questions.

Interview Question – Which power plant would you build, coal, natural gas, or oil?   View Answer

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Investment Analyst at DC Energy

No Offer – Interviewed in Washington, DC Nov 2010 – Reviewed Dec 21, 2010

Interview Details – 1 hour skill test. General math and logic. Brush up on this before hand. Find the area of a circle inside a square inside a circle. Most of it is analytical and fairly straight forward but there are a couple of questions regarding your interest in your position and whether you have programming experience.

Interview Question – Why do you want to work at DC Energy?   Answer Question

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Investment Analyst at DC Energy

No Offer – Interviewed in Vienna, VA May 2010 – Reviewed Jun 29, 2010

Interview Details – Submitted resume via college job board and was contacted a few weeks later for an IQ/Computer test.

Online test consisted mainly of brain teasers, math problems and market estimation questions. You are expected to take an hour to complete the exam. I'd suggest skimming a brain teaser or basic probability/math book to prepare.

Phone interview went over my resume and ended with a simple probability case interview involving coin flips.

Week later I was invited for an on-site interview which HR said would consist of 3 case interviews. First interview was centered around choosing between certain power plant configurations given some data--simple DCF would suffice. The 2nd interview involved how to invest in a variety of power plants given probabilistic data. Final interview consisted of choosing between crops and how to allocate an investment.

I'd suggest that interviewers review case study books and basic portfolio texts.

Interview Question – You are farmer with the following historical pricing data for X and Y crop. What would you plant and why?   Answer Question

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Investment Analyst at DC Energy

No Offer – Interviewed in Washington, DC Mar 2010 – Reviewed Mar 31, 2010

Interview Details – The first part is an online test. Mostly logic questions and quant type problems. I don't think you need to get the whole thing right to move onto the phone screen. The second part was a phone screen gauging general interest including fitness questions and also a case at the end. The case was not a general business cases and involved solving a math problem with weighted averages on probabilities. When you get invited to final round, the recruiter will give you a sample case that will make u think you will get general business cases - however don't be misled by this, your cases will be math problems and more like solving brain teaser or quant problems (dont waste your time prepping business cases). There are 3 cases during final round, and afterwards a lunch, and then maybe a presentation of the company. The lunch was after the cases so it cannot help you, only hurt you.

Interview Questions

  • how many zeros are at the end of 100!   View Answers (3)
  • f(n) is a function counting all the ones that show up in 1, 2, 3, ..., n. so f(1)=1, f(10)=2, f(11)=4 etc. When is the first time f(n)=n.   View Answers (7)

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Investment Analyst at DC Energy

No Offer – Interviewed in Oct 2009 – Reviewed Oct 22, 2009

Interview Details – First round interview was 30 minutes long; 10 minutes fit, 15 minutes case, 5 minutes for questions. Case was not like typical mgmt consulting case; don't come in with the strategy consulting approach. The case really consisted of related questions which were indirectly linked to how electricity auctions run. Interviewer wasn't *that* helpful, which made it difficult.

Interview Question – Why do you want to trade energy?   Answer Question

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Associate Power Trader at DC Energy

No Offer – Reviewed Nov 13, 2012

Interview Details – On campus interview. Interviewer is a trader with a technical background. He cared only if you answered a brainteaser right or wrong. I did not answer it right according to him, and left the interview with the belief that it was a communication problem. Given his description of the teaser, I nearly wanted to prove to him that there is no answer to his question. And I did about 10 questions asking clarifications, testing the bounds of the his question, etc during the interview, to no avail.

Interview Question – The miscommunicated brain teaser.   Answer Question

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Investment Analyst at DC Energy

No Offer – Reviewed Nov 10, 2012

Interview Details – applied through University career center and received on-campus first round interview

Interview Question – Was asked technical question about a function provided by the interviewer   Answer Question

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Associate at DC Energy

No Offer – Interviewed in Feb 2012 – Reviewed Jul 16, 2012

Interview Details – Met with company reps at a career fair in D.C. I have experience working in energy, so they were more than happy to give me a quick on-site interview. About 2 weeks later they invited me out for a 2 day interview which consisted of about 3 quantitative case interviews and several opportunities to meet with staff (both junior and senior).

Not going to lie, the interview process is extremely challenging. With that said, this is an excellent company that deserves the best and brightest out there (hence the hard interview process).

Interview Question – What is the optimal investment strategy given 3 different energy plants.?   Answer Question

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Investment Analyst at DC Energy

No Offer – Interviewed in Dec 2011 – Reviewed Feb 18, 2012

Interview Details – Submitted my resume on their website. Several months later, I recieved a response, and took the online test. 8 +/- questions, some were free response (why are you interested, explain why the dollar coin failed), some were brain teasers. (very similiar to the questions others have posted, although a lot of the posted answers are wrong)

Following the online test, i did a thirty minute phone interview with a current analyst. For the most part, we just discussed the electricity market, and how the trade, etc. We ended with a brain teaser, (how many tires are sold in the US). Overall, I believe the interview went well. The analyst sent me an email immediately following the interview, thanking me and saying to reach out with any additional questions. I sent him a nice obligatory thank you reply.

Since then, complete silence. After 3 weeks, I contacted the HR person inquiring about my status. No response... Very odd, considering that others have posted that they've recieved relatively quick feedback.

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Investment Analyst at DC Energy

No Offer – Interviewed in Oct 2011 – Reviewed Dec 1, 2011

Interview Details – Received 1st round interview through on-campus recruiting; 30-minute quantitative case interview. Interviewer was friendly and experienced.

Received call-back for 2nd rounds same evening. Two 45-minute interviews, with a mix of fit, case, quant, and algorithmic questions. Got the feeling that the technical questions carried heavier weight. Crushed all questions except the algorithm one, which was very difficult. Still don't know how to solve it. Having taken some algorithms classes might have been helpful.

Dinged a few days later.

Not a typical prop trading firm. Work is more team-focused with a single bonus pool. Being a team-player was emphasized. Overall, a very selective but pleasant interview experience.

Interview Question – Why trading/DC Energy?   Answer Question

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