Canada – Ontario, Mississauga

Job Summary

AECOM’s Ontario Water & Natural Resources looking for applicants for the position of Arborist in our Mississauga, ON office to support our existing activities and to grow our capacity to serve clients on challenging and exciting projects across the province.

The successful candidate will have 3-5 years of experience, be highly motivated and enjoy working on a diversity of projects, be an effective communicator and be committed to producing high quality work. Individuals should have a strong background conducting tree inventories and tree health assessments, completing arborist reports and tree preservation plans, as well as experience with tree removal and injury permit applications. Individuals should also have knowledge and experience in the taxonomic identification of woody plants, including native and non-native species that occur in natural areas as well as landscape varieties and street trees.

Individuals should have a background preparing, coordinating and conducting field work and completing associated data analysis and reporting. Strong organizational skills, leadership skills, and an ability to work well on multi-disciplinary teams in a fast-paced environment are essential qualities.

Individuals must be willing to travel to complete field work across the GTA and other areas of Ontario and Canada.

Responsibilities for the position include but aren’t limited to the following:

  • Support a field crew to undertake data collection and field investigations related to tree inventories in urban and remote sites in southern and central Ontario and Canada
  • Data entry and report writing
  • Adhere to AECOM’s Health and Safety Protocols


At AECOM, we believe infrastructure creates opportunity for everyone. Whether it’s improving your commute, keeping the lights on, providing access to clean water or transforming skylines, our work helps people and communities thrive.

We take on the most complex challenges and pioneer innovative, iconic solutions that push the limits of what’s possible – the world’s longest cable-stayed bridge, record-breaking sports events, the largest greenfield port development mega project, life-sustainingand disaster recovery programs, and the tallest tower in the Western Hemisphere.

On projects spanning transportation, buildings, water, governments, energy and the environment, we deliver professional services throughout the project lifecycle.

We are proud to be recognized for excellence:

  • Fortune ‘s World’s Most Admired Companies – 2014-2020
  • #1 in Transportation and General Building in Engineering-News Record ‘s 2019 “Top 500 Design Firms” and #1 2019 “Top 200 Environmental Firms”
  • VIQTORY 2020 Military Friendly® Gold Employer
  • Perfect score on the Human Rights Campaign Foundation’s Corporate Equality Index for 2017-2019


With world class technical expertise, leading edge technology and innovative project delivery capability around the world, AECOM’s global environmental practice helps industry and government meet their business goals – to achieve compliance, reduce or eliminate risks and manage impacts. We provide advisory and technical services to help clients cleanup and close contaminated sites and surplus operational facilities and restore them for reuse, plan and permit new facilities, address critical climate change issues, restore habitats and water quality, protect natural and cultural resources, maintain compliance, and cost effectively manage residuals and wastes.

Minimum Requirements

  • BA/BS in environmental science or biology, from a recognized University or College + 2 years of relevant experience or demonstrated equivalency of experience and/or education.
  • Valid Ontario Drivers License
  • Valid Standard First Aid + CPR

Preferred Qualifications

  • Arborist Certification
  • Knowledge of and experience with application of tree by-laws and policies across southern and central Ontario
  • Strong technical capability in identifying flora of southern and central Ontario and ability to apply/use dichotomous keys
  • Demonstrated experience conducting field work in southern and central Ontario
  • Experience with air photo interpretation (hard/soft copy), Global Positioning Systems, and map and compass orientation
  • Ability to work effectively in a team environment as well as independently
  • Ability to work in both field and office environments
  • Efficient in the use of cell phones, laptops, tablets and other technical devices.
  • Ecological Land Classification Certification
  • Experience writing and preparing technical reports
  • Familiarity with Microsoft Office Suite with proficiency in Microsoft Word and Excel; experience with GIS
  • Wilderness First Aid and/or wilderness experience
  • Has access to a vehicle for conducting field work
  • Tree Risk Assessment Qualification (TRAQ)

What We Offer

When you join AECOM, you become part of a company that is pioneering the future. Our teams around the world are involved in some of the most cutting-edge and innovative projects and programs of our time, addressing the big challenges of today and shaping the built environment for generations to come. We ensure a workplace that encourages growth, flexibility and creativity, as well as a company culture that champions inclusion, diversity and overall employee well-being through programs supported by company leadership. Our core values define who we are, how we act and what we aspire to, which comes down to not only delivering a better world, but working to “make amazing happen” in each neighborhood, community and city we touch. As an Equal Opportunity Employer, we believe in each person’s potential, and we’ll help you reach yours.

Job Category Sciences

Business Line Environment

Business Group Design and Consulting Services Group (DCS)

Country Canada

Position Status Full-Time

Requisition/Vacancy No. 244076BR

Additional Locations CA – Guelph, ON – 55 Wyndham St N, CA – Hamilton, ON – OG – Hamilton Office 201-45 Goderich Roa, CA – Kitchener, ON – 50 Sportsworld Crossing Rd, CA – Markham, ON – 105 Commerce Valley Dr W

Virtual: No

Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status.

Job Overview

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