Engineer III or IV - Storage Application

• 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.

• Bachelor’s degree in Electrical Engineering, or related Engineering discipline.
• 4+ years of relevant electrical and/or power engineering experience (Energy Storage preferred).
• Ability to independently lead technical reviews and drive issue resolution across multiple stakeholders.
• EIT or PE license preferred

• Bachelor’s degree in Electrical Engineering or related Engineering discipline.
• 7+ years of relevant electrical and/or power engineering experience with significant Energy Storage project exposure.
• Demonstrated ability to lead program-level standards, equipment strategies, and cross-functional technical decision-making (Engineering, Supply Chain, Operations, Commissioning, and vendors).
• Experience supporting pursuits, design development, construction issue resolution, and commissioning/turnover for critical power systems.
• Professional Engineer (PE) license, preferred

(Actual range is higher for the following office locations: Denver, CO and Chicago, IL – 5%, Seattle, WA, and Portland, OR – 10%, Washington, D.C. – 12.5%).

Base pay is positioned within the range based on several factors including an individual’s knowledge, skills, and experience, with consideration given to internal equity.

#LI-TH1 #LI-Hybrid

A few benefits offered include:

(for Non-Craft & Non-Union Craft working 25+ hours / week)

• 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

Please make note:

• Visa sponsorship is not offered for this position.
• Our postings are typically open a minimum of 5 days and an average of 44 days.

As a top builder, developer, and EPC (Engineering, Procurement, and Construction), our expertise spans markets like sports, renewable energy, data centers, healthcare, and more.

We are builders at heart, working to ensure the built environment has a lasting positive impact.

Your uniqueness brings new and creative perspectives to the team.

Mortenson is committed to providing equal opportunities of employment (EOE) to all individuals, regardless of your race, religion, gender, national origin, age, veteran status, disability, marital status or any other legally protected category.

• Mortenson reserves the right to hire any individual without legal or financial obligation on unwanted solicitations. No agency emails, calls, or solicitations are accepted without a valid agreement.
• 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.). We are unable to sponsor or take over sponsorship of an employment Visa at this time.