Executive Administrative Assistant

Company: MiTek
Location: Chesterfield
Posted on: April 1, 2026

Job Description:

Job Description Provide administrative support to multiple members on the executive leadership team by independently managing complex calendars, travel and communications, preparing and analyzing reports, coordinating cross-functional priorities, and leading key administrative processes. This role exercises sound judgment, maintains strict confidentiality, and proactively identifies opportunities to improve office and business operations. Job Responsibilities & Requirements What You Will Do: Responsibilities Serve as a primary administrative partner to executive leadership, anticipating needs, prioritizing competing demands, and ensuring timely follow-through on commitments. Independently manage complex executive calendars (multiple time zones and stakeholders), including proactive conflict resolution, agenda preparation, travel and meeting logistics. Assist with small & large departmental meetings and company events end-to-end, including vendor coordination, contracts, budgets, catering, and post-event feedback. Own administrative processes and office procedures; create documentation, streamline workflows, and implement improvements to increase efficiency and compliance. Manage purchasing and invoice processing for administrative and office needs, including requisitions, expense reconciliation, and tracking against department budgets (as applicable). Draft, proofread, and disseminate executive communications; serve as a point of contact for internal and external stakeholders while maintaining a high degree of professionalism and confidentiality. Maintain regular, reliable attendance and punctuality, including being present and ready to work at the start of the scheduled shift. This is an on-site Monday - Friday role at our Corporate HQ in Chesterfield. Qualifications High School/GED required, BA/BS Degree preferred 4 years of progressively responsible executive administrative or related experience required Demonstrated experience planning, managing, and executing complex events and meetings (multiple stakeholders, budgets, and vendors) required Demonstrated experience providing executive-level support and/or coordinating facility/office operations required Advanced proficiency with Microsoft Office applications (Outlook, Word, Excel, PowerPoint, Teams) required Ability to learn new software programs to discern most efficient ways to work Experience with procurement, budgeting, and HRIS systems preferred Soft Skills Excellent verbal and written communication skills, including the ability to draft executive-ready correspondence. Strong organizational and time-management skills, with the ability to manage multiple priorities and deadlines with minimal direction. Demonstrated judgment, discretion, and ability to handle highly confidential information. Ability to build effective working relationships across levels and departments and communicate with tact and professionalism. Creative & proactive problem-solver with a continuous improvement mindset; comfortable navigating ambiguity and change. Physical Demands This role is performed in an office environment where a computer, telephone and other office equipment are used as needed to perform the duties of the role. This role may need to access areas within the building that are undergoing renovations which may contain jobsite hazards. Occasionally this role will be required to push, pull, bend, lift and move up to 25 lbs. MiTek Perks: Generous time off including Paid Time Off, 13 annual holidays, and volunteer time off Day One Medical/Rx, Dental and Vision Plans Family friendly benefits including Paid Caregiver Leave, Paid Parental Leave and Adoption Reimbursement Performance/Incentive bonuses Career advancement, training opportunities, Employee Resource Groups, and tuition reimbursement Retirement programs including Matching 401(k) Contributions and Profit Sharing Employer paid Short-Term Disability, Long-Term Disability and Life Insurance myFlexPay partner – allows you to track, manage and access your pay anytime MiTek is a platform innovator and enabler that exists to transform the building industry with better building solutions. In 1955, MiTek transformed residential construction with the invention of the Gang-Nail plate and a digital platform that provided an affordable and scalable way to manufacture wood trusses. Today, MiTek delivers software, services, engineered products, and automated solutions that enable the building industry to improve efficiencies by optimizing the balance between off-site and on-site. With nearly 5,600 team members worldwide, MiTek collaborates across the building industry to enable and accelerate transformational breakthroughs in design and construction to transform the way the industry designs, makes, and builds. As a Berkshire Hathaway (NYSE: BRK-A, NYSE: BRK-B) company since 2001, MiTek has a record of continuous growth and innovation. MiTek is an E-Verify and Drug and Tobacco-Free Workplace. We are an equal opportunity employer; and all qualified applicants will receive consideration for employment without regard to race, color, creed, religion, national origin, ethnicity, physical or mental disability, sex (including pregnancy, sexual orientation, gender identity or expression, or transgender status), age (40 and over), genetic information (including family medical history), veteran status, or any other protected characteristic. For accommodation to assist with completing this application, please contact Human Resources at 1 314-434-1200. www.mii.com

Keywords: MiTek, Saint Charles , Executive Administrative Assistant, Administration, Clerical , Chesterfield, Missouri