Mainspring Energy

Senior Sales Engineer

Mainspring Energy

full-time

Posted on:

Location Type: Remote

Location: California • United States

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Salary

💰 $127,500 - $150,000 per year

Job Level

Senior

About the role

  • Develop system architecture, preliminary designs, and cost estimates from concept through execution handoff
  • Articulate and support sound technical approaches, ensuring appropriate design integration and tradeoff evaluation
  • Produce complete, accurate, and timely proposal packages across multiple concurrent projects
  • Build well-supported cost estimates, proactively communicate risks, and incorporate market inputs into pricing assumptions
  • Support customer meetings, site walks, and solution presentations as the technical subject matter expert
  • Communicate technical concepts in clear, structured, and solution-oriented formats across customer and internal stakeholders
  • Collaborate with Engineering, Product, Controls, Commissioning, and Project Management to support technical feasibility and execution alignment
  • Contribute to peer design reviews to share technical perspective and strengthen overall solution quality

Requirements

  • Bachelor’s degree in Electrical/ Mechanical/ Systems/ Energy Engineering
  • 7+ years of experience in sales engineering, applications engineering, front-end engineering development (FEED) or cost estimating within electrical power systems or related industries
  • Experience in distributed energy, solar, batteries, fuel cells, microgrids, or related technologies preferred
  • Familiarity with electrical power systems, three phase inverters, protection relays, and the physics of grid integration
  • Strong understanding of standard electrical drawings such as wiring diagrams, electrical schematics, and one-lines
  • Ownership Mentality: Proactive in identifying risks and comfortable advocating for the resources needed to solve them
  • Ability to travel nationally (~25%)
Benefits
  • This position is remote and eligible for a 25% annual bonus.
  • Along with the base salary, Mainspring offers pre-IPO stock options + benefits.
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
system architecturecost estimatingtechnical designelectrical power systemsthree phase invertersprotection relayswiring diagramselectrical schematicsone-linesdistributed energy
Soft Skills
communicationcollaborationproactive risk identificationsolution-oriented thinkingtechnical subject matter expertiseownership mentalitypresentation skillsstakeholder engagementpeer design reviewproblem-solving
Certifications
Bachelor’s degree in Electrical EngineeringBachelor’s degree in Mechanical EngineeringBachelor’s degree in Systems EngineeringBachelor’s degree in Energy Engineering