Executive Administrative Assistant

MiTek • Chesterfield, MO

25d • Onsite

About The Position

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.

Requirements

• 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
• 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.

Nice To Haves

• Experience with procurement, budgeting, and HRIS systems preferred

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.

Benefits

• 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

What This Job Offers

• Job Type: Full-time
• Career Level: Executive
• Education Level: High school or GED