Engineer III or IV - Storage Application

Mortenson • Minneapolis, MN

10d • Hybrid

About The Position

Engineering at Mortenson is different. Engineering Services is a dedicated in-house engineering organization that supports some of the most complex and impactful projects across North America. Our engineers contribute to a diverse portfolio spanning energy and transmission infrastructure, utility-scale renewable power, battery energy storage, data centers, manufacturing facilities, sports and entertainment venues, and other large-scale commercial and infrastructure developments. Rather than serving as a traditional consulting firm or performing field construction work, our engineers collaborate closely with project development, design, procurement, and construction teams to provide technical expertise, optimize designs, improve constructability, and solve complex challenges throughout the project lifecycle. This unique model allows engineers to see the direct impact of their work while enjoying diverse technical opportunities, cross-functional collaboration, and the backing of one of the nation's leading builders. If you're looking for a role where technical excellence, innovation, and real-world application come together, Engineering Services offers a unique opportunity to influence projects from concept through completion. The Engineer III, or IV – Energy Storage Application Engineer – Electrical role is an electrical engineering position within Engineering Services that provides early-stage design creation and technical support to Utility Scale Battery Storage Projects through design phase, procurement, construction and commissioning stages of projects. This role supports Mortenson’s Storage and Supply Chain functions. This position is a technical expert providing engineering support across the lifecycle of energy storage projects and partners closely with Project Management, Supply Chain, Design, Construction, Commissioning, and Operations to support the technical evaluation, strategic sourcing, and standardization of battery energy storage systems and associated equipment (e.g., battery enclosures, power conversion systems, medium-voltage transformers, switchgear, energy management systems, controls, and fire/life-safety systems). The role provides lifecycle support from early project development and technology selection through design, procurement, construction, commissioning, turnover, and operational support, adjusting focus based on project demand. This position offers opportunities at Engineer III, and Engineer IV levels, allowing candidates to apply based on their experience and qualifications. Compensation for this role is determined based on factors such as experience and location. Hiring Locations: Minneapolis, MN / Denver, CO / San Antonio, TX

Requirements

• Bachelor’s degree in Electrical Engineering, or related Engineering discipline.
• 4+ years of relevant electrical and/or power engineering experience (Energy Storage preferred) for Engineer III.
• 7+ years of relevant electrical and/or power engineering experience with significant Energy Storage project exposure for Engineer IV.
• Ability to independently lead technical reviews and drive issue resolution across multiple stakeholders (for Engineer III).
• Demonstrated ability to lead program-level standards, equipment strategies, and cross-functional technical decision-making (Engineering, Supply Chain, Operations, Commissioning, and vendors) (for Engineer IV).
• Experience supporting pursuits, design development, construction issue resolution, and commissioning/turnover for critical power systems (for Engineer IV).
• Must be currently legally authorized to work in the U.S. without sponsorship for employment visa status (e.g., H1B status, 0-1, TN, CPT, OPT, etc.).

Nice To Haves

• EIT or PE license preferred (for Engineer III).
• Professional Engineer (PE) license, preferred (for Engineer IV).

Responsibilities

• Serve as the technical subject matter expert for battery energy storage systems (BESS), providing engineering support throughout the full project lifecycle from early development and technology selection through design, procurement, construction, commissioning, turnover, and operations.
• Lead technical evaluations and due diligence for battery energy storage technologies, systems, equipment, and vendors, including feasibility assessments, technology comparisons, preliminary system sizing and engineering calculations, site-specific considerations, and identification of technical risks to support design development, technical discussions, and project decision-making.
• Develop and maintain technical equipment specifications for battery energy storage projects, including ATS, LV switchboards, MV switchgear, transformers, generators, AC distribution panels, power conversion systems (PCS), and control houses, ensuring alignment with project requirements, design standards, applicable codes, and operational needs.
• Support Supply Chain with technical reviews for strategic sourcing, vendor qualification, equipment standardization, bid evaluations, technical clarifications, and supplier selection.
• Identify and resolve technical risks, design gaps, equipment interface issues, and constructability concerns throughout project development and execution.
• Provide engineering support during construction, including responses to RFIs, review of field changes, vendor coordination, technical issue resolution, and verification that installations align with approved design requirements.
• Review vendor proposals, equipment submittals, drawings, calculations, technical data sheets, and compliance documentation to verify alignment with project requirements, applicable codes, and internal engineering standards.
• Ensure energy storage systems comply with applicable codes, standards, utility requirements, and safety practices, including requirements related to electrical systems, battery safety, fire protection, controls, and system integration.
• Drive continuous improvement and standardization across the energy storage portfolio by identifying opportunities to simplify designs, reduce technical risk, improve constructability, increase reliability, and optimize total lifecycle cost.

Benefits

• Medical and prescription drug plans that includes no additional cost vision coverage
• Dental plan
• 401k retirement plan with a generous Mortenson match
• Paid time off, holidays, and other paid leaves
• Employer paid Life, AD&D, and disability insurance
• No-Cost mental health tool and concierge with extensive work-life resources
• Tuition reimbursement
• Adoption Assistance
• Gym Membership Discount Program

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level