Office Administrator

The Opportunity

Tetra Tech is looking for a part‑time Office Administrator based in our Chicago, IL location.

This is a part‑time (24 hours) in‑office role requiring the ability to be on‑site each day.

The selected candidate will be responsible for assisting the Operations Manager, Supervisors and Project Managers with administrative duties related to their selective projects. This role will also oversee all administrative processes and office operations of our Chicago office and provide administrative support for satellite offices assigned to the Chicago office.

The following duties are considered essential to the role. Reasonable accommodations may be made to enable individuals with disabilities to perform these essential functions:

• Administrative support which includes managing the front desk, office equipment, ordering supplies and other administrative responsibilities.
• Coordinate preparation and organization of multiple documents and other deliverables according to internal and external client requirements and schedules.
• Manage inventory of IT equipment.
• Reserve and prepare conference rooms for meetings.
• Enter work orders and visitor information in building management system.
• Communicate building management messages to office staff.
• Schedule services with vendors for office.
• Provide human resources assistance, including but not limited to:
• Review resumes
• Schedule interviews
• Prepare offer letters
• Conduct phone screens
• Order sympathy flowers
• Provide pre‑and onboarding support for new employees
• Organize office events
• Other administrative/project tasks as assigned

At Tetra Tech, we are Leading with Science to solve the world’s most complex challenges. Our industry‑leading experts in engineering and consulting are committed to driving positive change in communities around the world. For over 50 years, we have been at the forefront of innovation and sustainability. Today we stand as a market leader, offering cutting‑edge solutions in water, environment, energy, and international development.

Our work has improved more than 625 million lives around the world.

Join Tetra Tech to make a real difference. Our work leverages cutting‑edge technologies, advanced analytics, and the expertise of world‑class scientists and engineers to create meaningful change around the world. Discover your full potential – join us to advance your career while leaving a lasting legacy.

• High School Diploma
• 1‑3 years of experience
• Ability to effectively communicate with all levels of management and peers.
• Exceptional organizational skills with good judgment and follow through.
• Capability to work under pressure and prioritize time effectively.
• Ability to handle multiple tasks and meet deadlines while maintaining a high level of integrity and confidentiality especially matters concerning business and staff.
• Individual drive and initiative with the aptitude to maintain under minimal supervision.
• A professional disposition and a positive attitude.
• Self‑starter and be able to work as part of a team.
• Flexible, able to immediately adapt to changing priorities.

• Bachelor's Degree Preferred.
• Familiarity with Microsoft Teams.
• Strong proficiency with Microsoft Word and Excel.
• Proficiency with Adobe Acrobat PDF.

• Ability to lift up to 25 pounds occasionally such as boxes of paper.
• Prolong periods of sitting or standing at a desk and using a computer.

The work environment is 100% in‑office.

• The schedule for this part‑time position is in‑office Monday – Friday; minimum 24 hours per week.

Additional hours in office may be required during office events or trainings.

• Comprehensive and market‑competitive benefits.
• Merit‑based financial rewards.
• Flexibility and company‑wide commitment to work/life balance.
• Collaborative team atmosphere that values the contributions of all employees.
• Learning and development opportunities for ongoing professional growth.

Tetra Tech offers comprehensive benefit options that allow employees to design a plan based on individual needs and assists in planning for long‑term…