Are you an administrative professional eager to advance your career with a dedicated, community-focused, award-winning company? Tatham Engineering offers the opportunity to join a supportive team that values mentorship and provides challenging, rewarding work. Put your knowledge and experience to meaningful use in an environment where collaboration and growth are encouraged. We have an exciting new opportunity for the position of Administrative Assistant based in our Guelph office. This is an in-office position that will require 30 to 37.50 hours per week. The successful candidate will be responsible for coordinating and/or assisting with the daily administrative functions of the office in an organized, efficient and friendly manner. Work involves performing administrative duties for Senior Managers, Group Leaders and Project Managers. The ideal candidate is detail-oriented, thrives in a fast-paced environment, and enjoys being a central point of coordination within a collaborative team. Key Responsibilities Perform reception duties, greeting visitors, opening and circulating incoming mail and packages, coordinating deliveries and couriers, etc. Schedule meetings and appointments for staff and provide related administrative support Prepare meeting agendas, minutes and schedule action item reminders Complete word processing, scanning, photocopying and compiling PDFs and reports Prepare spreadsheets, tender summaries, project financial summaries, contract change orders and other contract documents Understand and ensure office deliverables (eg. reports, letters, proposals, etc.) reflect Tatham standards Assist with and/or coordinate office lunches and events Maintain the inventory of office supplies and materials (eg. stationary, kitchen, washrooms, etc.) Coordinate office repairs and maintenance with landlord and/or service providers (eg. cleaners, copier service, etc.) Manage office key fobs and alarm system codes Other responsibilities include: Assist Head of Client Relations and Growth with establishing and maintaining business development and growth related initiatives and systems Assist Proposal Specialist with development and submission of engineering proposals Provide administrative support to other offices (from Guelph) as needed, including vacation coverage for administrative assistants and assistance during periods of excess workload Support additional initiatives and tasks as needed, contributing to the ongoing growth and success of the Guelph office Key Requirements Diploma in business, office administration or related field is an asset Minimum of 2 years of relevant administrative experience in a professional office setting (experience in an engineering, architecture or construction-related office would be an asset) Advanced knowledge of Microsoft Office (Word, Excel, Powerpoint) Knowledge of graphic design programs and applications would be an asset Excellent communication and interpersonal skills Excellent organizational, time management, multitasking and prioritizing skills Enthusiasm for working in a collaborative team environment, with a proactive willingness to support colleagues and contribute to a positive and high-performing office culture Demonstrates sound judgement and initiative in selecting appropriate work methods and procedures How to Apply Click the “Apply Now” button below and follow the instructions to create your account. Please include your resume and contact information. We thank all candidates for applying, however only those selected for an interview will be contacted. Tatham Engineering does not use artificial intelligence in the hiring process. All applications are reviewed by Human Resources and the appropriate hiring managers. Why Tatham? At Tatham, our key values are reflected in everything we do. We aim to be the engineering consulting firm of choice by upholding our core values: Service, Communication, Teamwork, Relationships & Community. Our company has experienced significant growth by putting these values into action.

What We Offer Competitive compensation, benefits, health spending account, RRSP matching and profit sharing Flexible work arrangements and work-life balance Paid volunteer opportunities Vacation starting at 3 weeks minimum for all positions – prorated in the first year Challenging and rewarding work on notable projects Professional development, training, mentorship program and career progression opportunities Reimbursement for annual professional dues Collaborative and engaging workplace environment Regular office/team socials and recreational outings, including an activity allowance for approved events Shareholder opportunities Company Information Tatham Engineering is a Canadian employee-owned, consulting engineering firm that specializes in Coastal, Land Development, Municipal, Structural (Buildings and Bridges), Transportation, Water Resources, Water & Wastewater, Electrical and Mechanical engineering, and provides specialized services in Air & Noise, Climate Resilience and Hydrogeology. The firm was founded in Collingwood, Ontario, in 1988 and currently employs over 200 staff with branch offices in Barrie, Bracebridge, Guelph, Orillia and Ottawa. Tatham is proud to be recognized as one of Southwestern Ontario’s Top Employers of 2026 and Canada’s Top Small & Medium Employers of 2026!

Diversity, Inclusion, and Accommodations

Tatham Engineering is an equal opportunity employer that values diversity in the workplace and welcomes applications from all qualified candidates. We are committed to ensuring the selection process is inclusive, accessible, and barrier-free. If you require accommodation, please contact Human Resources at hr@tathameng.com and the request will be addressed confidentially. Expected Hiring Range for This Position $26.00 to $28.00 per hour Compensation will reflect the unique skills and experience each candidate brings to the role. The posted range serves as a general guideline, and final offers may vary.