Mainspring Energy Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 42 interview experiences · FREE TO READ
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25 roles · 42 reportsCandidate interview experiences
First-hand accounts from people who interviewed at Mainspring Energy.
Mainspring Energy
Thermal Hardware Engineer
Mid Average Positive experience No offer 4 rounds
Interview process
Recruiter call Technical screen Presentation Onsite Background check Offer
Interview formats
Technical Presentation
Applied through LinkedIn. The process was really quick, and I was invited for an onsite interview right away. It felt like a good interview, and they even showed me around the facility. There was a presentation and some technical questions. It seemed like a great place to work. I got positive feedback after the interview, but surprisingly, I didn't get an offer.
Confirmed questions3 questions
- Can you explain lumped capacitance models?
- What about first and second order thermal systems?
- How would you approach transient heat transfer problems?
Mainspring Energy
Salesforce Engineer
Entry Average Neutral experience No offer 5 rounds
Interview process
Technical screen Onsite Presentation
Interview formats
Technical Presentation Behavioral
I had one tech round and then 4 rounds on-site. The on-site included a presentation about an end-to-end project I delivered. I had to talk about the obstacles and challenges I faced, and also the deployment process. I also discussed the value it added to the business, the end result, and some metrics using the STAR method.
Confirmed questions5 questions
- Can you tell me about a project you worked on?
- Describe an end-to-end project you delivered, including any obstacles or challenges encountered and the deployment process.
- What business value did this project provide?
Mainspring Energy
Demand Generation
Mid Average Negative experience No offer 5 rounds
Interview process
Take home Recruiter call
Interview formats
Other Behavioral
I had four interviews and also a take home assignment to complete, which took about two months. The take home assignment was supposed to take three hours, but I actually spent twelve hours on it. It was unpaid time, and it involved creating a marketing plan for a specific segment. After I sent it in, three to four weeks went by and I didn't hear back, even after following up twice. When I finally got a response from the recruiter, they said they were still figuring out if the role would be remote or in-office, and if it would be on the sales or marketing team. They also told me not to wait around for them.
Confirmed questions2 questions
- Can you tell me about your experience with demand generation?
- Tell me about your experience with marketing strategy.
Mainspring Energy
Mechanical Engineer
Mid Average Negative experience No offer 4 rounds
Interview process
Recruiter call Onsite Background check Technical screen Offer
Interview formats
Presentation Technical Behavioral
I had a recruiter call, then a manager round, followed by an onsite panel interview. During the onsite, I presented a project I worked on, and then faced back-to-back interviews with 5-6 people from the panel. It took a full day. After that, they did a reference check where the manager spoke with two of my references for about 15 minutes each, asking about my work ethic, technical skills, and personality. They then made me wait three weeks for a decision. The recruiter then called me for another interview with a different hiring manager who gave me an exam with 8 medium-difficulty questions to solve. A week later, they informed me my skills weren't sufficient and reposted the job. It seems like they weren't sure what they were looking for. A tip for them: don't ask for references and then contact them before making an offer, as candidates usually interview with multiple companies and their references can't handle random calls.
Confirmed questions8 questions
- Questions about beam bending
- Questions about materials
- Questions about the standard stress strain curve
Mainspring Energy Interview Questions
Quoted word for word from Mainspring Energy interview reports.
“Can you explain lumped capacitance models?”
Read reports →“What method would you use to measure the straightness of a long pipe's inner diameter?”
Read reports →“What about first and second order thermal systems?”
Read reports →“What are your thoughts on EtaGen's technology and future plans?”
Read reports →“Could you create a part in Solidworks?”
Read report →“Solve 8 medium difficulty questions on an exam paper”
Read report →“How would you approach transient heat transfer problems?”
Read report →“Which domestic markets would you target for expansion and what is your rationale?”
Read report →“Can you give me three characteristics that define you?”
Read report →Formats, difficulty and experience
Across all 42 Mainspring Energy interview reports.