Office Administrator (Temporary)

Trileaf Corporation is a nationwide environmental, architecture, and engineering consulting firm that assists clients with environmental due diligence, regulatory compliance, and engineering & architectural design. Trileaf serves the wireless communications, real estate, financial and petroleum industries from its headquarters in St. Louis, MO and 19 branch offices throughout the U.S.

We are currently looking to add a dynamic Office Administrator to our growing business. (This is a temporary assignment with the potential of becoming a regular position.)

Essential Job Functions:

• Provide a welcoming environment while greeting visitors
• Oversee daily operations to ensure a clean, functional and collaborative workspace
• Manage office supplies, equipment, and vendor services to maintain availability and efficiency
• Answer phone, route calls and take messages
• Serve as the primary contact for building management and external vendors for maintenance and office-related needs
• Provide occasional travel and meal coordination for management team
• Assist in preparing documents, reports and presentations as needed
• Support Accounting, with invoice tracking, correspondence, and scheduling
• Update client information in accounting software
• Support Activities Committee with office events, employee appreciation activities, and team-building initiatives
• Manage company announcements and employee welcome notifications
• Foster a welcoming and inclusive office culture to support team engagement
• Support HR administrative duties as assigned
• Maintain breakroom
• Other duties as assigned

Basic Qualifications:

To be considered, the resume of the applicant must demonstrate the following qualifications/skills:

• Proven experience as an Office Manager, Administrative Assistant, or similar role
• Prior experience in clerical tasks, including electronic filing, data entry and record maintenance
• Familiarity with basic accounting principles - Accounts Receivable, Accounts Payable, General Ledger
• A proactive attitude and the ability to work independently
• Attention to detail and problem-solving abilities.
• Strong work ethic
• Excellent written and oral communication skills
• Strong client service skills with the ability to interact with all levels of management
• Critical thinking and problem-solving skills
• Ability to develop relationships with customers and team members
• Proficient in using office software, such as Microsoft Office Suite.
• Quick Books experience preferred

Education :

• Associates degree or equivalent - preferred

Trileaf's benefits include:

• Health, Dental and Vision insurance
• Short-term disability, Long-term disability and Life insurance - 100% Employer paid
• 401k w/ match
• 3 weeks of PTO per year
• 8 paid holidays plus Floating Holiday

The listed salary range for this position is an expected range. The actual offer will be at the company's sole discretion and determined by relevant business considerations, including the final candidate's qualifications, years of experience, skillset, geographic location, and current market data.

All offers of employment are contingent upon the successful completion of a comprehensive background check, including criminal history, education verification, employment verification and drug test. This may also include credit and motor vehicle record checks depending on the position.


Trileaf Corporation is an Equal Opportunity. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, genetic disorder, disability, protected veteran status or any other characteristic protected by state, federal, or local law.