Mentor junior administrators and provide technical guidance * Participate in architecture reviews ... Expert knowledge of the Linux (RHEL) & Unix (HP-UX) Operating Systems. * Advanced knowledge of the ...
Mentor junior administrators and provide technical guidance * Participate in architecture reviews ... Expert knowledge of the Linux (RHEL) & Unix (HP-UX) Operating Systems. * Advanced knowledge of the ...
Sr. Administrator Unix/Linux
Montreal, QC · On-site
Mentor junior administrators and provide technical guidance * Participate in architecture reviews ... Expert knowledge of the Linux (RHEL) & Unix (HP-UX) Operating Systems. * Advanced knowledge of the ...
Sr. Administrator Unix/Linux
Montreal, QC · On-site
Mentor junior administrators and provide technical guidance * Participate in architecture reviews ... Expert knowledge of the Linux (RHEL) & Unix (HP-UX) Operating Systems. * Advanced knowledge of the ...
Mentor junior administrators and provide technical guidance * Participate in architecture reviews ... Expert knowledge of the Linux (RHEL) & Unix (HP-UX) Operating Systems. * Advanced knowledge of the ...
Mentor junior administrators and provide technical guidance * Participate in architecture reviews ... Expert knowledge of the Linux (RHEL) & Unix (HP-UX) Operating Systems. * Advanced knowledge of the ...
... junior administrators and provide technical guidance Participate in architecture reviews and ... Expert knowledge of the Linux (RHEL) & Unix (HP-UX) Operating Systems. Advanced knowledge of the ...
... junior administrators and provide technical guidance Participate in architecture reviews and ... Expert knowledge of the Linux (RHEL) & Unix (HP-UX) Operating Systems. Advanced knowledge of the ...
... as a junior pair you direct and verify, not a passenger. Requirements This is a technically ... C/C++ proficiency on performance-critical, low-level codebases, with deep familiarity with Linux ...
... as a junior pair you direct and verify, not a passenger. Requirements This is a technically ... C/C++ proficiency on performance-critical, low-level codebases, with deep familiarity with Linux ...
Conduct code reviews and mentor junior developers. * Troubleshoot, debug and resolve complex ... Experience with embedded Linux environments, including Yocto, Boot2Qt and Ubuntu. * Experience ...
Conduct code reviews and mentor junior developers. * Troubleshoot, debug and resolve complex ... Experience with embedded Linux environments, including Yocto, Boot2Qt and Ubuntu. * Experience ...
Be Seen First
QA Test Technician - PC & Device Testing
Montreal, QC · On-site
CA$20 - CA$24.50/hr
... Linux environments, reproducing defects, documenting clear test results, and working with engineers to validate fixes. This role is best suited for a junior to intermediate QA professional who is ...
Quick apply
Be Seen First
QA Test Technician - PC & Device Testing
Montreal, QC · On-site
CA$20 - CA$24.50/hr
... Linux environments, reproducing defects, documenting clear test results, and working with engineers to validate fixes. This role is best suited for a junior to intermediate QA professional who is ...
Senior Engineer, Software Test
Montreal, QC · On-site
CA$115K - CA$140K/yr
Mentor junior members of team on test development, and SOPs and WIs. * Help devise and enforce ... Experience with Linux or QNX. COMPETENCIES * Decisive * Demonstrate leadership * Dependable
Quick apply
Senior Engineer, Software Test
Montreal, QC · On-site
CA$115K - CA$140K/yr
Mentor junior members of team on test development, and SOPs and WIs. * Help devise and enforce ... Experience with Linux or QNX. COMPETENCIES * Decisive * Demonstrate leadership * Dependable
Apporter un soutien aux analystes en gestion des menaces et des vulnérabilités de niveau junior ... Kali Linux), etc. * Avoir réalisé, au cours des cinq (5) dernières années, dans au moins un (1) ...
Quick apply
Apporter un soutien aux analystes en gestion des menaces et des vulnérabilités de niveau junior ... Kali Linux), etc. * Avoir réalisé, au cours des cinq (5) dernières années, dans au moins un (1) ...
Knowledge in Linux and experience with automating tasks * Using Git as a version-control system ... Assigning tasks to junior developers such as coding, testing, debugging, and analytics * Writing ...
Knowledge in Linux and experience with automating tasks * Using Git as a version-control system ... Assigning tasks to junior developers such as coding, testing, debugging, and analytics * Writing ...
Mentor junior engineering specialists and contribute to engineering reviews, incident response, and ... Linux and networking skills * Experience with agile framework and devops * Familiarity with landing ...
Mentor junior engineering specialists and contribute to engineering reviews, incident response, and ... Linux and networking skills * Experience with agile framework and devops * Familiarity with landing ...
Knowledge in Linux and experience with automating tasks * Using Git as a version-control system ... Assigning tasks to junior developers such as coding, testing, debugging, and analytics * Writing ...
Knowledge in Linux and experience with automating tasks * Using Git as a version-control system ... Assigning tasks to junior developers such as coding, testing, debugging, and analytics * Writing ...
En tant que développeur.se junior, vous contribuerez à l'implémentation d'API, de pipelines d'IA ... Connaissance des environnements Linux et Git. * Capacité à se tenir à jour et à apprendre ...
Quick apply
En tant que développeur.se junior, vous contribuerez à l'implémentation d'API, de pipelines d'IA ... Connaissance des environnements Linux et Git. * Capacité à se tenir à jour et à apprendre ...
Knowledge in Linux and experience with automating tasks * Using Git as a version-control system ... Assigning tasks to junior developers such as coding, testing, debugging, and analytics * Writing ...
Knowledge in Linux and experience with automating tasks * Using Git as a version-control system ... Assigning tasks to junior developers such as coding, testing, debugging, and analytics * Writing ...
En tant que developpeur.se junior, vous contribuerez a l'implementation d'API, de pipelines d'IA ... Connaissance des environnements Linux et Git. * Capacite a se tenir a jour et a apprendre ...
En tant que developpeur.se junior, vous contribuerez a l'implementation d'API, de pipelines d'IA ... Connaissance des environnements Linux et Git. * Capacite a se tenir a jour et a apprendre ...
Sr Principal Developer
Montreal, QC · On-site
Mentor and guide junior developers and influence architectural decisions across the team. * Take ... Windows, Linux * Observability and Monitoring: OpenTelemetry * Automated testing frameworks:
Sr Principal Developer
Montreal, QC · On-site
Mentor and guide junior developers and influence architectural decisions across the team. * Take ... Windows, Linux * Observability and Monitoring: OpenTelemetry * Automated testing frameworks:
Knowledge in Linux and experience with automating tasks * Using Git as a version-control system ... Assigning tasks to junior developers such as coding, testing, debugging, and analytics * Writing ...
Knowledge in Linux and experience with automating tasks * Using Git as a version-control system ... Assigning tasks to junior developers such as coding, testing, debugging, and analytics * Writing ...
Linux Junior information
What are some common challenges faced by Linux Junior professionals in their first year, and how can they overcome them?
What are Linux Junior roles?
What are the key skills and qualifications needed to thrive as a Linux Junior, and why are they important?
What is the difference between Linux Junior vs Linux Support Technician?
| Aspect | Linux Junior | Linux Support Technician |
|---|---|---|
| Required Credentials | Basic Linux certifications (e.g., Linux Essentials) | Linux certifications + troubleshooting skills |
| Work Environment | Entry-level, training-focused | Customer or internal support, troubleshooting |
| Employer & Industry Usage | IT companies, tech startups, educational institutions | IT support firms, enterprise IT departments |
| Common Search & Comparison Intent | Understanding entry-level roles in Linux | Clarifying support roles and responsibilities |
The main difference between a Linux Junior and a Linux Support Technician lies in experience and scope. Linux Juniors are typically entry-level, focusing on basic Linux tasks and gaining foundational knowledge. Linux Support Technicians often have more troubleshooting experience and handle customer or internal support issues. Both roles are essential in IT environments, but Support Technicians usually require more advanced skills and certifications.

Other
Medical, Dental, Life, Retirement
Posted 17 days ago
Domtar rating
7.7
Based on 47 frontline employees who took The Breakroom Quiz
187th of 519 rated manufacturers
Job description
Position title: Sr. Systems Administrator, Linux & Unix
Location: Downtown Montreal (hybrid)
Reports to: Manager, Systems Administration
The mission of the Infrastructure and Operations, Centre of Expertise group is to make Domtar a world-class customer focused IT organization and effective business partner; become a reference for operating efficiency and be an IT employer of choice.
The Senior System Administrator is responsible for the design, implementation, operation, and stability of enterprise Linux/UNIX platforms supporting mission‑critical business services. This role provides advanced technical leadership, performs complex troubleshooting, and ensures systems meet availability, performance, security, and compliance requirements.
The position works closely with architecture, security, networking, storage, and application teams and acts as a senior escalation point for operational issues.
Job Responsibilities/Accountabilities:
Platform Administration
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Install, configure, patch, and maintain Linux/UNIX operating systems (e.g., RHEL, Oracle Linux, HP-UX)
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Administer physical, virtual, and cloud‑based servers
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Manage system lifecycle activities including builds, upgrades, and decommissioning
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Perform capacity planning and performance tuning
Availability, Reliability & Operations
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Ensure high availability, resiliency, and recoverability of systems
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Implement and maintain monitoring, alerting, and logging solutions
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Participate in on‑call rotations and lead resolution of complex incidents
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Support disaster recovery planning, testing, and execution
Security & Compliance
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Apply OS hardening standards and security baselines
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Manage access controls, privileged access, and auditing
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Support vulnerability remediation and security incident response
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Ensure systems comply with internal standards and regulatory frameworks (e.g., NIST, ISO)
Automation & Tooling
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Develop and maintain automation using shell scripting, Python, or configuration management tools (e.g., Ansible, Puppet, Chef)
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Improve build standardization and reduce manual operational effort
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Contribute to CI/CD or infrastructure‑as‑code initiatives where applicable
Storage, Backup & Networking
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Integrate systems with enterprise storage and backup platforms
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Troubleshoot network‑related issues (DNS, TCP/IP, NFS, firewalls)
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Coordinate with storage and network teams on design and operations
Leadership & Collaboration
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Act as senior technical escalation point for system administration issues
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Mentor junior administrators and provide technical guidance
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Participate in architecture reviews and infrastructure design discussions
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Produce and maintain technical documentation and operational runbooks
Critical Competencies :
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Proven skills of change management;
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Good knowledge of the stages of concept proof and pilot project;
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Excellent problem solving and analysis skills;
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Strong communications skills and bilingual in both English* and French (written and spoken) ;
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Strong technical documentation skills in both English* and French;
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Ability to create and define metrics that accurately reflects the current state of an infrastructure.
(*) This is required since as part of this function, you will have to intervene with customers, partners and/or our American subsidiaries on a recurring basis, both orally and in writing.
Required Qualifications/Professional Experiences:
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University degree with a major in IT or equivalent work experience;
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Minimum of 7 years of relevant experience.
Preferred Qualifications/Professional Experiences/Years of Experience:
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Expert knowledge of the Linux (RHEL) & Unix (HP-UX) Operating Systems.
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Advanced knowledge of the Server platforms, (ESX), (HP-UX), (ITANIUM);
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Advanced knowledge of Cloud and Hyperconverged Infrastructures;
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Good knowledge of Backup and Storage;
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Advanced knowledge or the clustering technologies;
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Advanced knowledge of monitoring processes and management tools (for example Red Hat Satellite, Ansible or SolarWinds);
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Strong security awareness;
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Strong scripting skills;
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General ITIL knowledge;
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Strong knowledge of DR (Disaster Recovery), for SAP, Oracle and VMware environments, would be an asset;
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RHEL, Linux, HP-UX, UNIX certifications are a definite asset.
Domtar is an equal opportunity employer. We invite women, Aboriginal peoples, persons with disabilities and members of visible minorities to apply.
Our offer:
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A downtown location (Place des Arts metro);
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A modern and spacious environment;
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A flexible insurance plan (life, medical, dental);
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An employee assistance program;
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A childcare center on location;
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Competitive compensation, including annual bonus plan;
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A pension plan with matching company contributions;
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Employer-paid development and continuing education.
About Domtar :
Domtar makes products that people around the world rely on every day.
Serving more than 50 countries, we are a leading provider of a wide variety of fiber-based products including communication, specialty and packaging papers, market pulp and airlaid nonwovens. We make our products at manufacturing and converting facilities in the U.S. and Canada, with a focus on safety, quality, and sustainability.
Through our values of agility, caring and innovation, we constantly find better ways to serve our customers, support our employees and strengthen our communities.
Domtar’s principal executive office is in Fort Mill, South Carolina and Domtar is part of the Paper Excellence group of companies. To learn more, visit www.domtar.com.