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Energy Storage United States Be the First to Apply Job Description ESS Project Administrative Assistant SUMMARY Mortenson is currently seeking a Project Admin to join our Energy Storage Group with the ability to work well with a variety of staff at all levels in an ever-changing environment, remaining flexible, inventive, enthusiastic, and efficient with a high level of integrity and confidentiality.

As a Project Administrative Assistant, you are at the heart of the business operations and activities and the soul that keeps your team moving forward. You will be handling a wide range of administrative and executive support tasks with an aptitude for working independently or with little supervision. You move quickly with the changing environment and are up to date with the latest software and services. You also use that knowledge to strategically support your team's projects.

RESPONSIBILITIES

Organization and flexibility are critical in performing duties which include, but are not limited to: Provide administrative and operational clerical support to the department or staff Handle incoming calls and providing general information, forward calls to the appropriate party and take messages as required File and maintain written records along with crafting electronic copies for records Receive, sort and record deliveries into computer database Prepare daily outbound deliveries Prepare materials for design and construction meetings Record and update meeting minutes for the various site meetings Responsible for procurement of consumable materials and office supplies Assist Superintendent with equipment inventory tracking and organization Support Superintendent with the entry of craft worker timecards General support for the project team as needed with various day to day tasks Schedule, track and log all repairs and standard maintenance for the work trucks Provide maps and directions to any visitors, subcontractors, deliveries, or new employees Log all applicants into the Craft Applicant Tracking Spreadsheet

QUALIFICATIONS

Associate's degree in Business or related administrative experience preferred. Three years administrative experience, preferably supporting a large number of team members Proficiency in Microsoft Office suite, including Excel, Email and Calendar systems, and PowerPoint Detail oriented, with excellent problem-solving skills, meticulous, upbeat, adept at succeeding in rapidly changing environment Strong communication skills with high degree of integrity in both written and verbal communications 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 Gym Membership Discount Program The base pay range for this role is $24.52 MIN

$33.12 MAX. (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
#LI-LS1 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.

ABOUT MORTENSON

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. Let's Redefine Possible® Equal Employment Opportunity 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. Other Items to Note 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. Apply Now Job Info Job Identification 23769 Job Category Project Support Posting Date 09/14/2026, 07:02 PM Job Schedule Full time Locations 1131 Fm 1055, Earth, TX, 79031, US © MapTiler © OpenStreetMap contributors Legend Jobs at a location Group of locations © MapTiler © OpenStreetMap contributors | © Oracle Corporation Terms Legal Notices Use control and scroll to zoom the map Use two fingers to move the map 1131 Fm 1055, Earth, TX, 79031, US Copy to Clipboard Similar Jobs Project Administrative Assistant Colorado Springs, CO, United States Posted on 09/11/2026 Project Admin Project Administrative Assistant

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Project Administrative Assistant- Energy Storage