Assistant, Executive

Location: Toronto, ON, CA
Position Title: Assistant, ExecutiveCome Build Your Career at Aecon!
Aecon delivers some of the most complex and impactful infrastructure projects — from transformative transportation networks to critical energy, industrial and nuclear programs. The projects we build connect communities and power future generations. With deep roots in North America and a strong footprint internationally, Aecon brings global expertise and proudly serves public and private sector clients through its Construction and Concessions segment.
Safety Always is not only our #1 core value – it is the standard that anchors our culture. We believe the most ambitious projects deserve the most committed people. At Aecon, you won’t just build your career — you’ll help build what matters to enable future generations to thrive.
At Aecon, you can count on:
Safety Always.
Our number one core value. The safety of our people, projects, partners, and stakeholders is our priority focus – today and always.
Integrity.
We lead by example, with humility and courage.
Accountability.
We’re passionate about delivering on our commitments.
Inclusion.
We provide opportunities where people feel valued, supported, and empowered to contribute fully.
We deliver infrastructure with purpose, and our people are at the heart of everything we do. Aecon employees are incredibly proud to build some of the most impactful infrastructure of this generation – we call it
Aecon Proud .
At Aecon we:
Ensure you and your family receive the services and benefits needed to
support your mental, emotional, and physical well-being.
Are intentional when it comes to investing in your development. We help you build your career and advance your skills through our
Aecon University, tuition reimbursement, and Leadership Programs.
Are committed to creating work environments focused on mutual respect, teamwork, collaboration, and new ideas, through meaningful initiatives, training, partnerships with Veteran groups, our
Aecon Women in Trades
and diversity programs, as well as our
Employee Resource Groups (ERGs), to ensure we are building with top talent and harnessing our collective strengths within every aspect of our culture.
Operate responsibly by managing risk, safety, and environmental considerations across all our projects and surrounding communities.
Our success is built on the passion, expertise, and dedication of our people. Together, we embrace strong execution, innovation, and continuous improvement — values that come to life through the unique talents and collaborative spirit of every team member. If you’re inspired to make a difference through future-building projects, join our best-in-class team.
What is the Opportunity?
The Executive Assistant provides high-level, proactive support to the Chief Operating Officer (COO). The role protects the COO’s time, keeps priorities moving, and ensures the COO is prepared for meetings, decisions, travel, and follow-up. The Executive Assistant works closely with senior leaders, executive assistants, employees, clients, and external partners, and handles sensitive information with sound judgment and discretion.
Role Scope and Complexity
Supports a senior executive whose responsibilities span multiple business units, functions, projects, and time zones.
Manages a complex calendar and changing priorities, often with limited notice.
Coordinates confidential and time-sensitive information for executive and leadership discussions.
Uses judgment to resolve scheduling conflicts, identify risks, and determine when issues require the COO’s attention.
Works independently while staying closely connected with the COO and the broader executive support network.
What You’ll Do Here:
Executive Calendar and Priority Management
Own and manage the COO’s calendar, including meetings, travel, preparation time, and follow-up.
Assess meeting requests, clarify purpose and required decisions, and recommend priorities.
Resolve calendar conflicts and adjust plans quickly when business needs change.
Protect time for the COO’s most important operational, strategic, and people priorities.
Meeting and Decision Support
Prepare agendas, briefing notes, presentations, reports, and other meeting materials.
Confirm that the COO has the right information, context, and documents before each meeting.
Coordinate leadership meetings and offsites, including logistics, materials, minutes, and action tracking.
Record decisions and follow up with owners to keep commitments on schedule.
Communication and Stakeholder Coordination
Act as a professional first point of contact for the COO’s office.
Draft and edit clear correspondence, presentations, and updates on behalf of the COO.
Build effective working relationships with executives, executive assistants, employees, clients, board contacts, and external partners.
Handle questions and requests promptly, redirecting them when another leader or function is better placed to respond.
Travel, Expenses, and Administration
Plan detailed domestic and international travel, including transportation, accommodation, itineraries, meeting logistics, and changes.
Prepare accurate expense reports, process invoices, and maintain organized records in line with company requirements.
Coordinate office, technology, supplies, and other administrative needs for the COO.
Support special projects and events that require careful planning, follow-through, and confidentiality.
Confidentiality and Executive Office Effectiveness
Protect confidential business, employee, legal, financial, and personal information.
Use sound judgment when handling sensitive requests, competing priorities, and incomplete information.
Maintain simple, reliable systems for files, contacts, action items, and recurring commitments.
Identify ways to improve the COO office’s routines, information flow, and use of time.
What You Bring to the Team:
Qualifications and Experience
Post‑secondary education in business administration, office administration, communications, or a related field is preferred, or an equivalent combination of education and relevant experience.
At least 7 years of progressive administrative experience, including 3 to 5 years supporting a C‑suite executive or equivalent senior leader.
Experience managing complex calendars, executive travel, confidential correspondence, meetings, presentations, and expense reporting.
Experience supporting a senior leader in construction, infrastructure, engineering, energy, professional services, or another complex operating environment is an asset.
Knowledge and Skills
Excellent judgment, discretion, and ability to maintain strict confidentiality.
Strong planning, organization, problem‑solving, and follow‑through skills.
Clear written and verbal communication, with strong proofreading and attention to detail.
Advanced working knowledge of Microsoft Outlook, Word, PowerPoint, Excel, Teams, and SharePoint;
experience with expenseand travel systems is an asset.
Ability to remain calm, responsive, and accurate in a fast‑moving environment with competing priorities.
Working Conditions
Role based in Toronto, Ontario, with regular in‑office presence to support the COO.
Occasional travel and work outside standard business hours may be required to support executive priorities across time zones.
Act with integrity, discretion, professionalism, and respect.
Anticipate needs, raise issues early, and recommend practical solutions.
Build trust through accuracy, responsiveness, and consistent follow‑through.
Create order and clarity when priorities change or information is incomplete.
Reason for Vacancy: Replacement
The expected pay range for this role is $70,000 - $90,000 CAD per year.
Individual pay is determined based on several factors, including work location, education, experience, unique skills and job conditions. Other considerations may include certifications, specialized training, and the complexity or scope of the role.
Aecon fosters diversity, inclusion and belonging within and across our organization. We welcome all to apply including, women, visible minorities, Indigenous peoples, persons with disabilities, and persons of any sexual orientation or gender identity.
We are committed to adhering to the objectives and requirements outlined in the Accessible Canada Act (ACA), and to meeting the accessibility needs of persons with disabilities in a timely manner. Through the implementation of the requirements of the ACA and its applicable regulations, appropriate accommodations will be provided upon request throughout the interview and hiring process.
As part of our commitment to fair and transparent hiring practices, Aecon may use artificial intelligence (AI) tools to assist in screening and reviewing candidates. These tools are applied responsibly and in accordance with applicable privacy laws and Aecon’s AI Usage Policy. All final decisions are made by qualified Aecon team members.
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