← Search all jobs

Administrative Assistant

Mortenson

Listing collected from Mortenson's career site. NextChapter is independent of Mortenson.

MN, United States · Posted October 12, 2026

Just laid off? Start here: a plan for the first weeks

See every open role at Mortenson

More in Minnesota job market · All Administrative Assistant jobs (1,492) · Manufacturing & Industrial · Administration jobs

More roles at Mortenson

Similar jobs

Pay compared with the market

This listing does not state pay. Across 419 open administrative assistant listings that state pay, the middle half runs $37,500 to $52,000 and the median is $42,500.

Listed pay is what employers advertise, not what people are paid.

Administrative Assistant salaries by state · Check your own pay

How AI is used in this kind of work

Among secretaries and administrative assistants, except legal, medical, and executive, AI is already used for a large share of the tasks. Measured exposure for secretaries and administrative assistants, except legal, medical, and executive: 45% (high).

Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.

Check how this applies to your own job

Skills this job asks for

Say which you have and which you want to build. We use it to match you to jobs like this one.

About the job

Administrative Assistant

SUMMARY

Mortenson is currently seeking an Administrative Assistant to handle a wide range of administrative and executive support tasks. Your ability to remain flexible, inventive, dedicated, and efficient with a high level of integrity and confidentiality is vital to your success in this role. Excellent written and verbal communication skills are necessary as you will be interacting with staff at all levels in an ever-changing environment. Your extraordinary customer service abilities will ensure every customer has a superb experience when they are at Mortenson facilities.

RESPONSIBILITIES

Perform regular administrative tasks and overall office organization, greet visitors and customers with a positive demeanor, coordinate and set up meetings, handle calendars, and schedule travel

Set up, organize, and manage filing systems, prepare documents, perform record keeping and filing duties, and proofread communications and documents carefully

Prepare billing/invoices as needed, coordinate between numerous support groups (Safety, Human Resources, IT, Legal), and procure miscellaneous goods using Mortenson’s internal procurement system

Understand the operating group and company resources and assist Operating Group Leadership members with miscellaneous duties such as expense reports and travel

Perform all other duties as assigned

QUALIFICATIONS

Associate or bachelor's degree preferred

Minimum three years administrative support experience required

Detail orientation and the capability to proofread effectively

Demonstrate flexibility as well as excellent organization and multi-tasking skills

Display proficient skills in Microsoft Word, Excel, Outlook, and Power Point

Exhibit effective communication and active listening skills

Positive professional attitude and strong customer service skills

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 $59,300.00 - $80,000.00. (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.

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.