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Senior Computer Application Support Specialist (CAS)

Upstaff


Job Location:

Petawawa - Canada

Monthly Salary: Not provided by the employer
Experience Required: 10years
Posted: 1 September 2026 (17 hours ago)
Application Deadline: 29 November 2026
Vacancies: 1 Vacancy

Job Summary

HIRING Senior Computer Application Support Specialist (CAS)

Job Title: Computer Application Support Specialist (CAS) Senior
Client: 4th Canadian Division Signal Squadron
Industry: Government / Defense & Military / Information Technology
Location: Petawawa Ontario
Work Arrangement: 100% On-site
Contract: September 14 2026 March 31 2027
Positions: 2
Language: English
Security Clearance: Valid Reliability Clearance Mandatory


We are currently seeking an experienced Senior Computer Application Support Specialist (CAS) to provide on-site service desk application systems account and technical support for the 4th Canadian Division Signal Squadron.

The successful candidate will have strong hands-on experience supporting end users in a networking environment troubleshooting hardware and software issues managing user accounts supporting Active Directory and working with IT service management/ticketing systems.

Key Responsibilities


Provide 1st line service desk and technical support to end users.
Troubleshoot and resolve hardware software system printer and CPU-related issues.
Provide technical support through remote connections when required.
Support users in a networking environment and troubleshoot connectivity-related issues.
Configure and support network software and ensure compatibility between applications utilities hardware and peripherals.
Support commonly used software applications operating systems and communication protocols.
Assist with system configuration and ensure systems operate efficiently and productively.
Provide support for communication features and related technologies.
Perform account management activities including account creation modification movement and transfers.
Support and manage user accounts and objects within Active Directory (AD).
Assist with file management and other Active Directory-related activities.
Provide technical support for cloud-based applications.
Log update track and resolve incidents and service requests using online IT service management/ticketing systems.
Diagnose issues document resolutions and escalate complex incidents when required.
Provide professional customer service and clear communication to end users.





Requirements
Mandatory Skills & Experience

Candidates should have demonstrated experience in:

Networking environments
Network software configuration and support
Operating systems and commonly used software applications
Communication protocols and communication features
Hardware and peripheral troubleshooting
Printer troubleshooting
CPU/system troubleshooting
1st line service desk/help desk support
Remote technical support
User account creation and modification
Account movement/transfer
Active Directory
File and object management
Cloud-based applications
IT service management/ticketing systems


Strong Asset

EITSM Assyst experience will be considered a strong asset and may receive preference.

Security Clearance Mandatory

Valid Reliability Clearance is mandatory.

Candidates must be able to provide proof of their security clearance.

The contract start date is subject to the candidate having a valid VCR.

Work Location
4 CDSG Signal Squadron Service Desk
Building S111
101 Menin Drive
Petawawa ON K8H 2X3

This is a 100% on-site position. Candidates must be willing and able to work on-site in Petawawa Ontario for the full contract duration.

Ideal Candidate

The ideal candidate is a senior IT support professional with strong hands-on experience in service desk support networking Active Directory account administration troubleshooting cloud applications and ITSM environments.

Candidates who have experience supporting government military defense or enterprise IT environments are encouraged to apply.

Interested candidates: Please send your updated resume along with your contact details and confirmation of your Reliability Clearance.

Only candidates who meet the mandatory requirements and can work 100% on-site in Petawawa will be considered.

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Required Skills:

Mandatory Skills & Experience Candidates should have demonstrated experience in: Networking environments Network software configuration and support Operating systems and commonly used software applications Communication protocols and communication features Hardware and peripheral troubleshooting Printer troubleshooting CPU/system troubleshooting 1st line service desk/help desk support Remote technical support User account creation and modification Account movement/transfer Active Directory File and object management Cloud-based applications IT service management/ticketing systems Strong Asset EITSM Assyst experience will be considered a strong asset and may receive preference. Security Clearance Mandatory Valid Reliability Clearance is mandatory. Candidates must be able to provide proof of their security clearance. The contract start date is subject to the candidate having a valid VCR. Work Location 4 CDSG Signal Squadron Service Desk Building S111 101 Menin Drive Petawawa ON K8H 2X3 This is a 100% on-site position. Candidates must be willing and able to work on-site in Petawawa Ontario for the full contract duration. Ideal Candidate The ideal candidate is a senior IT support professional with strong hands-on experience in service desk support networking Active Directory account administration troubleshooting cloud applications and ITSM environments. Candidates who have experience supporting government military defense or enterprise IT environments are encouraged to apply. Interested candidates: Please send your updated resume along with your contact details and confirmation of your Reliability Clearance. Only candidates who meet the mandatory requirements and can work 100% on-site in Petawawa will be considered. #Hiring #ITJobs #ITSupport #ServiceDesk #HelpDesk #TechnicalSupport #ComputerSupport #ActiveDirectory #Networking #ITSM #EITSM #Assyst #PetawawaJobs #OntarioJobs #CanadaJobs #ContractJobs


Required Education:

Education: Diploma or degree in Computer Science Information Technology Computer Systems Networking or a related field preferred.