Mississauga, On Temp admin assistant Jobs – 34 Openings This Week

Office Administrator (6 Month Contract)
Dexterra —Mississauga, ON
- $50,000–$55,000 a year
- Full-time
- Microsoft Powerpoint
- Microsoft Word
- Microsoft Excel
Quick apply
6d
Entry-Level Administrative Coordinator & Summer Fulfillment & Office Assistant - Full/Part-time
Nology Solutions & Systems Inc —Mississauga, ON
- $44,000–$55,000 a year
- Part-time
- Microsoft Word
- Microsoft Excel
- Microsoft Outlook
- Paid time off
- Vision care
Quick apply
1d
Executive Assistant
Quantum Management Services —Toronto, ON
- $80,000–$85,000 a year
- Full-time
- Microsoft Powerpoint
- Microsoft Word
- Microsoft Excel
Quick apply
Client Support Admin and Servicing Rep
CanCap Management Inc. —Mississauga, ON
- $20–$23 an hour
- Hybrid work
- Customer service
- Administrative experience
- Negotiation
Quick apply
Communications and Admin Assistant, Lilly Project (Term Contract)
The United Church of Canada —Toronto, ON
- $28,740–$38,319 a year
- Part-time
- Hybrid work
- Writing skills
- English
- Microsoft Office
6d
Clerical Support Associate, Medical Imaging
Humber River Health —Greater Toronto Area, ON
- $29.97–$31.02 an hour
- Temporary
- Customer service
- Microsoft Office
- Administrative experience
7d
Administrative Assistant Canada Summer Jobs (CSJ) Position
CACD Canada —Mississauga, ON
- $17.60 an hour
- Temporary
- Microsoft Powerpoint
- Microsoft Word
- Microsoft Excel
Quick apply
Clerical Support Associate Birthing Unit
Humber River Health —Toronto, ON
- $29.97–$31.02 an hour
- Temporary
- Microsoft Office
- Administrative experience
- High school diploma or GED
Administrative Assistant
Wonderspeak Speech Therapy —Toronto, ON
- $20–$24 an hour
- Temporary
- Microsoft Excel
- Microsoft Outlook
- Customer service
- Flexible schedule
Quick apply
Administrative Assistant, Administrator
Halton Region —Burlington, ON
- $59,127–$73,910 a year
- Temporary
- Microsoft Powerpoint
- Microsoft Word
- Microsoft Excel
15h
Clerical Support Associate, Operating Room
Humber River Health —Greater Toronto Area, ON
- $29.97–$31.02 an hour
- Temporary
- Customer service
- Microsoft Office
- High school diploma or GED
Clerical Support Associate, Surgical Prescreening
Humber River Health —Toronto, ON
- $29.97–$31.02 an hour
- Temporary
- Customer service
- High school diploma or GED
- Organizational skills
Office Administrator
Callus 4Service Inc. —Brampton, ON
- $18–$20 an hour
- Temporary
- Microsoft Word
- Google Suite
- English
Quick apply
7d
Administrative Assistant (Safe Centre of Peel)- Canada Summer Jobs Program
Catholic Family Services of Peel-Dufferin for Safe Centre of Peel —Brampton, ON
- $18.50 an hour
- Full-time
- Microsoft Word
- Google Suite
- English
Quick apply
Clerical Support Associate Paediatric Outpatient Clinic
Humber River Health —Greater Toronto Area, ON
- $29.97–$31.02 an hour
- Temporary
- Customer service
- High school diploma or GED
- Organizational skills
Temporary Office Administrator
Crown Holdings —Toronto, ON
- Full-time
- Microsoft Powerpoint
- Microsoft Word
- Microsoft Excel
9d
Clerical Support Associate NICU/Children Inpatient unit
Humber River Health —Greater Toronto Area, ON
- $29.11–$30.13 an hour
- Temporary
- Microsoft Excel
- Customer service
- High school diploma or GED
Administrative Assistant II (Medical) - JS Sonshine Centre
University Health Network —Toronto, ON
- $25.56–$31.95 an hour
- Contract
- Word processing
- Writing skills
- Microsoft Office
Quick apply
6d
Administrative Coordinator - HO - CSJ
The Muslim Association of Canada —Mississauga, ON
- $21 an hour
- Full-time
- Microsoft Powerpoint
- Microsoft Word
- Microsoft Excel
Quick apply
Executive Assistant to the Dean & Special Projects Coordinator
OCAD University —Toronto, ON
- $31.59–$41.52 an hour
- Temporary
- Microsoft Outlook
- Social media management
- Writing skills
- Work from home
14d

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Office Administrator (6 Month Contract)

Dexterra -
Mississauga, ON

Quick apply

Job details

Full-time
$50,000–$55,000 a year
6 days ago

Qualifications

Microsoft Powerpoint
Microsoft Word
Microsoft Excel
Microsoft Outlook
Filing
Administrative experience
Presentation skills
Organizational skills
College diploma

Full job description

Company Description

WHO ARE WE?

Dexterra Group is a fast-growing, financially strong, publicly listed company (TSX:DXT). We have a far-reaching presence across the entire continent North America with hundreds of full-time and part-time opportunities at any given time. We aim to provide our people with more than just a job – we offer fulfilling opportunities in a culture that promotes stability, diversity and inclusion, camaraderie, employee recognition, work-life balance, and doing what you love. For over 75 years, the companies that began independently, and now form Dexterra Group, have been dedicated to serving North American clients to create and manage built environments that play a vital role in our economy and our local communities. And, that’s something we’re truly proud of. Work That Matters, People Who Care.

Job Description

The Administrative Assistant works independently within a team-oriented environment to provide comprehensive support to the Contract Representative, the Fleet Manager, and the Facilities Management team. This role ensures the efficient flow of business processes, fleet operations, workspace coordination, and safety compliance. The successful candidate maintains meticulous records, drives digital administrative workflows, manages office assets, and serves as the central point of contact while building positive relationships with personnel, vendors, and clients.

Please keep in mind this is a temporary hire (6 month contract).

Core Responsibilities (Things You Are Great At):

Office Ownership & Housekeeping: Execute a daily morning walk-around to ensure total office upkeep, monitor the office budget, manage the security system (fob programming), re-establish the visitor sign-in book, and maintain general office, kitchen, and truck supplies.
Fleet & Asset Management: Administer vehicle licensing renewals, plate transfers, CVOR requirements, and 407 Transponder inventory tracking; run weekly vehicle inspection and deficiency reports, monitor GPS/Geotab data, and coordinate truck decaling schedules.
Financial & Expense Administration: Process vendor purchase orders, manage new vendor setups, execute one-time payment/cheque requests, and assist the finance team with invoice tracking, corporate expenses, weekly Controls Technician expenses, and DOD staff expenses.
Onboarding, Offboarding & IT Setup: Coordinate employee onboarding/offboarding lists, set up physical workspaces, order Petro-Canada and Home Depot cards, configure new employee cell phones, set up RingCentral accounts, and issue new ID badges.
Training & Compliance Management: Schedule required 3rd party training for technicians, create technician profiles, track professional license renewals (TSSA, ESA), and run monthly training reports to issue compliance reminders. Track Security clearances for employees and Sub-contractors and flag any renewals needed to the Ops team and company CSO for action.
HR Support & Employee Tracking: Update employee master lists and organizational charts, manage vacation pay requests, track uniform allocations, and maintain the safety boot tracker.
Mail & Logistics: Handle the receiving and shipping of all parcels, check daily mail, and manage corporate hotel and flight travel arrangements.
Health, Safety & Contract Compliance: Support safety protocols by tracking WSIB/COI certificates, executing clearances, monitoring the "Don't Walk By" program, and maintaining the specialized team calendar.
Digital Data & Reporting: Drive organizational efficiency by moving all files to an eFiling system going forward, assisting with monthly PRM reports, and preparing routine presentations and correspondence.
Software Proficiency: Utilize Microsoft Outlook, Word, Excel, PowerPoint, and specialized tracking tools to manage day-to-day department activities.

Qualifications

Qualifications:

College Diploma in Office Administration or a related discipline.
Minimum of 2 years of secretarial, administrative, or fleet/facilities support experience.
Ability to obtain Government of Canada Security Clearance at the Reliability Level (Mandatory requirement).
Demonstrated initiative with the ability to work independently as a self-starter.
Strong organizational skills to manage conflicting priorities in a fast-paced environment.
Familiarity with fleet, safety, or trade compliance monitoring (e.g., CVOR, WSIB, TSSA, ESA) is a strong asset.
Proficient use of computers, digital filing systems, landlines, and mobile programming.
Documented proof of Worker or Supervisor health and safety awareness training (as per Ontario’s Occupational Health and Safety Act regulations; training can be provided).

Additional Information

WHAT’S IN IT FOR YOU?

Be part of an industry that's more important than ever!
Employee Referral Program!
Career advancement opportunities.
Whereas other companies are downsizing, we are growing!
Be #1 on day 1 by joining an industry leader.

Dexterra Group is an equal opportunity employer committed to diversity and inclusion. We are pleased to consider all qualified applicants for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, protected veterans’ status, Indigenous status, or any other legally protected factors. Disability-related accommodations during the hiring selection process are available upon request.

#IND1

Quick apply

Refine Your Search

temp admin assistant jobs in mississauga, on

Office Administrator (6 Month Contract)

Entry-Level Administrative Coordinator & Summer Fulfillment & Office Assistant - Full/Part-time

Executive Assistant

Client Support Admin and Servicing Rep

Communications and Admin Assistant, Lilly Project (Term Contract)

Clerical Support Associate, Medical Imaging

Administrative Assistant Canada Summer Jobs (CSJ) Position

Clerical Support Associate Birthing Unit

Administrative Assistant

Administrative Assistant, Administrator

Clerical Support Associate, Operating Room

Clerical Support Associate, Surgical Prescreening

Office Administrator

Administrative Assistant (Safe Centre of Peel)- Canada Summer Jobs Program

Clerical Support Associate Paediatric Outpatient Clinic

Temporary Office Administrator

Clerical Support Associate NICU/Children Inpatient unit

Administrative Assistant II (Medical) - JS Sonshine Centre

Administrative Coordinator - HO - CSJ

Executive Assistant to the Dean & Special Projects Coordinator

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