About Mullen

Careers at Mullen

Teaching & Faculty Positions

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  • Development Programs & Engagement Manager

    Mullen High School is seeking to hire an energetic, committed individual to serve as the Development Programs and Engagement Manager. This is a full-time, at-will opening. The role is a key member of the Advancement team at Mullen High School, providing essential support for the school’s fundraising, alumni engagement, and donor stewardship efforts. This role ensures strong operational execution across the Annual Fund and major gift program support functions, with a focus on data integrity, donor communications, and event coordination. The role will retain ownership of data entry, database integrity, reporting, donor research and audience segmentation. The Development Programs and Engagement Manager supports the school’s fundraising and engagement efforts by managing the accuracy, organization and effective use of development data while contributing to donor programs, communications and stewardship activities. This position requires someone who is highly detail-oriented while also able to see the larger picture. The successful candidate will understand how development strategy, communications strategy and donor engagement work together to advance the school’s mission and vision. Working closely with the Director of Development and Chief Advancement Officer—and collaboratively with the Communications team—the Development Programs and Engagement Manager will help translate fundraising priorities and donor information into coordinated communications, meaningful engagement opportunities and effective outreach. The position will maintain primary responsibility for development data entry, database integrity, reporting, donor research and audience segmentation. The manager will also contribute to donor communications, stewardship, cultivation and selected solicitation efforts and assist with special events as needed. Success in this role will be measured by the timely execution of Annual Fund activities, accuracy and completeness of donor data, consistent and high-quality donor communications, and effective support of advancement events and alumni engagement initiatives. The role and work is an extension of our Lasallian Catholic mission. You’ll need to be the kind of person who communicates proactively, shares information freely, and thinks about how your work connects to your colleagues, especially the Communications and Marketing Manager. This role isn’t just about executing tasks well. It’s about doing the work with intention, representing the school with integrity, and contributing to a community built on faith, service, and the dignity of every person. 

    CLICK HERE for the full job description.
    Salary Range: $57,000- $67,126
    depending on education and background Mullen reserves the right to pay more or less than the posted range

    Mullen offers a competitive benefits package to include health insurance, employee 403(b) contribution and employer partial match, employer paid life and disability insurance, and generous paid time off.

    Application Deadline: Friday October 9, 2026
    Interviews will begin for qualified applicants as soon as materials are received.
    Submit cover letter, resume, & three references to HR@mullenhigh.com

  • Substitute Teachers Pool

    Mullen High School is seeking Substitute Teachers to cover classes for teachers who are on retreat, attending conferences, or traveling to school-related events. Substitute teachers will be asked to monitor classes, proctor tests, and deliver simplified lesson plans.
    For any candidates that are interested in serving as a substitute for Mullen High School should send an e-mail to HR@mullenhigh.com with a resume and cover letter explain which courses you would be willing to substitute. 

Coaching Positions

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Non-Discrimination Policy

Mullen High School does not discriminate or allow unlawful harassment in any of its programs, procedures, or practices on the basis of age, color, disability, national or ethnic origin, political affiliation, race, religion, gender, sexual orientation, military service, or other protected classifications defined by the State of Colorado and local laws. The policy applies in all aspects of employment with Mullen High School.

HUMAN RESOURCES

Complete the Employment Application and send it with your resume and cover letter to hr@mullenhigh.com.

Human Resources
c/o Mullen High School
3601 S. Lowell Blvd.
Denver, CO 80236

(303) 761-1764 ext.3336

Contact Human Resources

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Benefits Overview

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  • Medical, Dental & Vision

    Mullen offers Medical, Dental and Vision insurance to all eligible employees through Cigna. We strive to maintain low cost to the employee. 

  • Paid Time Off

    Mullen offers a generous paid time off policy for teaching and non-teaching staff. Paid time off includes vacation, sick time, and family sick time. 

  • Educator Tuition Reduction

    After one year of employment with Mullen, eligible employees are able to participate in tuition reduction for dependents enrolled at Mullen High School. The percentage reduction is dependent on the employees years of service. 

  • Retirement Plan

    Mullen participates in a 403(b) retirement plan. Eligible employees can make contributions into the 403(b) plan up to the IRS's annual limitations. 

    Mullen also offers a Defined Benefit Plan fully funded by Mullen. Employees must remain with the company for 5 years to be vested in this plan. 

  • Life and AD&D Insurance

    Mullen provides all eligible employees with Life Insurance and Accidental Death & Dismemberment (AD&D) Insurance at no cost to the employee. We do also offer a supplement insurance to this category at the discretion and cost to the employee. 

  • Short & Long Term Disability

    Mullen provides all eligible employees with Short and Long Term disability at no cost to the employee. Disability insurance provides benefits that replace part of your lost income when you become unable to work due to a covered injury or illness. 

  • Employee Assistant Program

    We are proud to provide a confidential program dedicated to supporting the emotional health and well-being of our employees and their families. The EAP is provided at NO COST to employees through Unum.

  • Flexible Spending Account (optional)

    We give our employees the opportunity to participate in a flexible spending account through 24 Hour Flex. This is a pre-tax deduction that will help cover medical cost throughout the year. 
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