administration assistant jobs in Ontario

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10,000 administration assistant job listings in Canada. Find daily updated positions from leading job boards.


  • Ontario, Canada Dilico-Anishinabek-Family-Care Full-time

    Optional Flexible schedule to support work-life balance OMERS Pension plan available to all employees Generous paid vacation time for Permanent employees Paid time off at Christmas above paid vacation time EFAP available to all employees and their families Benefit plan that includes dental, healthcare, and vision services for Permanent employees A...


  • Ontario, Canada RTX Corporation Full-time €44,000 - €80,000 Temporary

    Location: CA-ON-RENFREW-114 ~ 1 Innovation Dr ~ INNOVATION Date Posted: 2026-10-20 Country: Canada Location: CA-ON-RENFREW-114 ~ 1 Innovation Dr ~ INNOVATION Position Role Type: Unspecified At Raytheon Canada, we are committed to both our customers and employees. Our division provides Mission Support, servicing the defence, security and aerospace...


  • Ontario, Canada RTX Full-time €44,000 - €80,000 Temporary

    Location: CA-ON-RENFREW-114 ~ 1 Innovation Dr ~ INNOVATION Position Country: Canada At Raytheon Canada, we are committed to both our customers and employees. Our division provides Mission Support, servicing the defence, security and aerospace sectors with a broad range of high technology products and services. You will be part of a valuable team that...


  • Ontario, Canada University of Waterloo Full-time €61,955 - €77,444 Temporary

    About Us At the University of Waterloo, we create and promote a culture where everyone can reach their full potential. As an employee, you get support & opportunities that empower you to advance your career. Explore how we can bring big ideas to life, together. The University is a welcoming workplace for those of all abilities, interests, and expertise. As...


  • Northwestern Ontario, ON, Canada Englobe Corp. Full-time

    Your missionYou will play an important role in a dynamic and passionate team, collaborating on a variety of projects of all sizes and scopes in the environment, renewable energies, hydroelectricity, transportation, materials, buildings and climate change markets. Boldness, innovation and collaboration are an integral part of our daily operations.Englobe -...


  • Eastern Ontario, ON, Canada RTX Full-time $44,000 - $80,000 Contract

    Location: CA-ON-RENFREW-114 ~ 1 Innovation Dr ~ INNOVATION PositionCountry: CanadaAt Raytheon Canada, we are committed to both our customers and employees. Our division provides Mission Support, servicing the defence, security and aerospace sectors with a broad range of high technology products and services. You will be part of a valuable team that allows...


  • Southwestern Ontario, ON, Canada University-of-Waterlo Full-time

    At the University of Waterloo, we create and promote a culture where everyone can reach their full potential. As an employee, you get support & opportunities that empower you to advance your career. Explore how we can bring big ideas to life, together. The University is a welcoming workplace for those of all abilities, interests, and expertise. As part of...


  • Southwestern Ontario, ON, Canada Waterloo International Full-time

    Administrative Assistant### Administrative AssistantApply: Waterloo, Ontario, Canada: Full time: Posted Today: 2026-03385At the University of Waterloo, we create and promote a culture where everyone can reach their full potential. As an employee, you get support & opportunities that empower you to advance your career. Explore how we can bring big...


  • Southwestern Ontario, ON, Canada University of Waterloo Full-time $62,000 - $77,000 Contract

    About UsAt the University of Waterloo, we create and promote a culture where everyone can reach their full potential. As an employee, you get support & opportunities that empower you to advance your career. Explore how we can bring big ideas to life, together. The University is a welcoming workplace for those of all abilities, interests, and expertise. As...


  • Eastern Ontario, ON, Canada RTX Corporation Full-time $44,000 - $80,000 Contract

    Location:CA-ON-RENFREW-114 ~ 1 Innovation Dr ~ INNOVATIONDate Posted:2026-10-20Country:CanadaLocation:CA-ON-RENFREW-114 ~ 1 Innovation Dr ~ INNOVATIONPosition Role Type:UnspecifiedAt Raytheon Canada, we are committed to both our customers and employees. Our division provides Mission Support, servicing the defence, security and aerospace sectors with a broad...


  • Northwestern Ontario, ON, Canada Ontario First Nations Technical Services Corporation Full-time

    Administrative Assistant The Ontario First Nations Technical Services Corporation (OFNTSC) is a nonprofit organization that provides technical advisory services, training, and capacity development to First Nations communities in Ontario. By offering a wide range of specialized services and expertise, OFNTSC helps to enhance the quality of life, promote...


  • Ontario, Canada Dilico Anishinabek Family Care Full-time €24 - €30 Temporary

    Why should YOU choose Dilico? Optional Flexible schedule to support work-life balance OMERS Pension plan available to all employees Competitive salaries Generous paid vacation time for Permanent employees Paid time off at Christmas above paid vacation time EFAP available to all employees and their families Benefit plan that includes dental,...


  • Ontario, Canada Anishinabek Employment & Training Services Full-time €45,000 - €55,000 Temporary

    The Ontario First Nations Technical Services Corporation (OFNTSC) is a nonprofit organization that provides technical advisory services, training, and capacity development to First Nations communities in Ontario.By offering a wide range of specialized services and expertise, OFNTSC helps to enhance the quality of life, promote self-sufficiency, and foster...


  • Ontario, Canada Northern Peak HR Full-time €50,000 - €55,000 Temporary

    a partnership between Dallan LP, Lac Des Mille Lac First Nation, Nigigoonsiminikaaning First Nation and Dale Levesque, a member of the Fort William First Nation. Additionally, Dallan LP is a 100% indigenous-owned business that provides industrial yard services which includes a variety of heavy equipment operations, maintenance and general labour. Further,...


  • Southwestern Ontario, ON, Canada University of Waterloo Full-time $62,000 - $77,000 Contract

    At the University of Waterloo, we create and promote a culture where everyone can reach their full potential. As an employee, you get support & opportunities that empower you to advance your career. Explore how we can bring big ideas to life, together. The University is a welcoming workplace for those of all abilities, interests, and expertise. As part of...


  • Northwestern Ontario, ON, Canada Dilico Anishinabek Family Care Full-time

    Become the backbone of the Child Welfare program with Dilico as an Administrative Assistant. Ensure accurate client files and support daily administrative duties in a meaningful role. Under the direction of a Child Welfare Manager, the Administrative Assistant facilitates program organization and timely completion of tasks. This position requires managing...


  • Northwestern Ontario, ON, Canada Dilico Anishinabek Family Care Full-time

    Why should YOU choose Dilico? Optional Flexible schedule to support work-life balance OMERS Pension plan available to all employees Competitive salaries Generous paid vacation time for Permanent employees Paid time off at Christmas above paid vacation time EFAP available to all employees and their families Benefit plan that includes dental, healthcare, and...


  • Eastern Ontario, ON, Canada RTX Corporation Full-time $44,000 - $80,000 Contract

    Bring exceptional organization and Microsoft Office skills to Raytheon Canada’s onsite Administrative Assistant position in Renfrew, Ontario. Support program and warehouse management.This Administrative Assistant provides professional administrative and organizational support at Raytheon Canada’s Renfrew location. The position requires calendar...


  • Ontario, Canada Waterloo International Full-time €61,955 - €77,444 Temporary

    Administrative Assistant to the ChairApply: Waterloo, Ontario, Canada: Full time: Posted Today: 2026-02904At the University of Waterloo, we create and promote a culture where everyone can reach their full potential. As an employee, you get support & opportunities that empower you to advance your career. The University is a welcoming workplace for those of...


  • Ontario, Canada Waterloo International Full-time €61,955 - €77,444 Temporary

    # Administrative Assistant to the ChairApply: Waterloo, Ontario, Canada: Full time: Posted Today: 2026-02904At the University of Waterloo, we create and promote a culture where everyone can reach their full potential. As an employee, you get support & opportunities that empower you to advance your career. Explore how we can bring big ideas to life, together....