Assistant Project Manager
Confirmed on the employer's own hiring board on Nov 12, 2026. First seen by Alion on Nov 11, 2026.
Company: 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, and financial industries from its headquarters in St. Louis, MO and many branch offices throughout the U.S.
Position Summary: Trileaf Corporation is a nationwide environmental, architecture, and engineering consulting firm that assists clients with environmental due diligence, regulatory compliance, and engineering and architectural design. From its headquarters in St. Louis, MO, and multiple branch offices throughout the U.S., Trileaf serves the wireless communications, commercial real estate and financial industries.
Location: St. Louis, MO (In-office)
RESPONSIBILITIES:
- Support client management of the Denver team virtually by distributing weekly project trackers, initiating new projects, handling purchase orders and requests, preparing and submitting proposals, assigning responsibilities, and monitoring project progress.
- Effectively manage and maintain a high volume of open projects and responsibilities with minimal supervision, including communication with federal, state, and local officials to define scopes of work and clearly convey those scopes and timelines to clients.
- Prepare detailed Environmental Report Scopes of Work with accuracy and efficiency.
- Assists in the training of new employees, including the development and implementation of training documents, presentations, and annual/seasonal companywide reminders.
- Perform quality reviews for all environmental reports.
- Maintain high quality communication with supervisor, team, and clients.
- Perform additional duties and special projects as assigned by the Supervisor.
QUALIFICATIONS AND SKILLS:
- 3+ years of relevant experience
- Phase I, Phase II and NEPA Environmental Site Assessment experience OR status as an Environmental Professional (EP) preferred
- Other Professional Licensure (PE/PG/CHMM/PMP/LEP) is desirable
- Experience with administrative functions such as accounting is helpful, but not necessary
- Valid driver's license
Education:
- Bachelor's degree in environmental sciences, biology, or related field required
Benefits:
- Health, Dental & Vision Insurance
- 401k with company match
- Short-term disability, Long-term disability & Life Insurance - 100% Employer paid
- 3 weeks of PTO per year
- 8 paid holidays plus 1 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.