Posted yesterday
Senior Facility Engineer – Mechanical
@ 5C Data Centers USA, Inc.
Montréal, Quebec
Overview
5C Data Centers USA is hiring a Senior Facility Engineer – Mechanical in Montreal, QC, on a hybrid full-time basis. The role is the primary mechanical technical authority for live data center facilities, covering chilled water, air handling, heat rejection and liquid cooling for high-density AI environments. Medical, vision and dental insurance are offered.
Responsibilities:
- Primary mechanical technical authority for operational data center facilities
- Lead root cause and reliability analyses of cooling systems
- Review and approve MOPs, SOPs, EOPs and high-risk interventions
- Support critical incidents and L3/L4 escalation rotation
- Represent engineering in design reviews, commissioning and handovers
Requirements summary:
- Bachelor's degree in mechanical or closely related engineering
- 6+ years in data centers or critical mechanical/cooling infrastructure
- Strong command of chilled water, air systems, pumps and heat rejection
- Ability to read mechanical drawings, control sequences and test data
- Strong judgment and calm under pressure during live events
Source and dates
Source type not verified · applicantpro
- Employer posting date
- 2026-11-05
- First seen by our source
- 2026-11-06
- Source record updated
- 2026-11-06
These dates describe the source record, not a live verification that the employer is still hiring. Check the original posting.
Job details
| Seniority | Senior |
| Department | Engineering |
| Experience | 6+ years |
| Hours per week | 40 (estimated) |
| Work setting | Office, Plant or factory, Client sites |
| Position | Sitting and standing |
| Physical demands | physical low · computer high |
| Languages | English |
| Education | Bachelor’s degree (required) |
| Fields of study | Mechanical Engineering |
Summary and details written by AI from the posting; the employer’s posting is the authority.
5C Data Centers USA, Inc.
| Field | Value |
|---|---|
| Open jobs on Jobsy | 3 |
5C DATA CENTERS
Join the Future of Digital Infrastructure
Are you a passionate Senior Facility Engineer – Mechanical looking to make a meaningful impact? We're building the next generation of digital infrastructure powering hyperscalers, AI innovation, and high-performance computing across North America.
JOB TITLE Senior Facility Engineer – Mechanical | DEPARTMENT Engineering – Facility Reliability |
LOCATION Montreal, QC | WORK ARRANGEMENT Hybrid |
TRAVEL REQUIREMENTS | SALARY RANGE |
Role Summary
5C is a full-stack AI digital infrastructure provider that designs, develops, and operates scalable AI factories and purpose-built data center campuses engineered for speed, density, reliability, sustainability, and long-term performance across North America.
As 5C's data center facilities transition from development into live operation, this role provides deep mechanical and cooling engineering authority for the operating portfolio. The Senior Facility Engineer – Mechanical is a senior technical anchor who owns the hardest live-site cooling and mechanical problems - from chilled water and air systems through liquid cooling for AI density - while mentoring engineers and setting the mechanical engineering bar for the function.
How We Work at 5C
Our core values guide how we collaborate, make decisions, support one another, and serve our customers. We're looking for people who embrace them and help us build something great.
What You Will Do
- Act as the primary mechanical engineering technical authority for operational facilities, providing expertise in chilled water systems, air handling systems, pumping systems, CRAH/CRAC units, heat rejection systems, and liquid cooling solutions designed for high-density AI environments.
- Lead root cause analyses, failure mode studies, and reliability assessments related to mechanical and cooling systems. Ensure the implementation, monitoring, and closure of corrective and preventive actions to maintain facility performance and resilience.
- Review and approve operational procedures (MOPs, SOPs, and EOPs) as well as high-risk interventions involving cooling systems, evaluating their impact on redundancy, capacity, and facility condition. Provide senior technical expertise during critical incidents, abnormal operating conditions, and major alarms, while participating in the L3/L4 technical escalation rotation.
- Represent the engineering team during design reviews, commissioning activities, Integrated Systems Testing (IST), and operational handovers. Identify single points of failure, redundancy losses, and thermal or capacity constraints; maintain technical documentation and control sequences; mentor engineers; and establish regional mechanical engineering technical standards.
What You Bring
- Bachelor's degree in Mechanical Engineering or a closely related engineering discipline.
- 6+ years in data centers, critical facilities, or mission-critical mechanical/cooling infrastructure.
- Strong command of chilled water and air systems, pumps, heat rejection, and data center cooling design.
- Ability to read and interpret mechanical drawings, control sequences, commissioning reports, and test data.
- Strong judgment, written communication, and the ability to remain calm and direct under pressure during live events.
Why Join 5C Data Centers?
At 5C, we believe great people build great companies. You'll build a rewarding career while helping shape the future of digital infrastructure - one of the fastest-growing industries in the world.
Career Growth Build a rewarding career in one of the world's fastest-growing industries. | Industry Leadership Help power the infrastructure behind AI and high-performance computing. |
Entrepreneurial Culture Your ideas matter - we empower employees to help shape our future. | Comprehensive Rewards Competitive pay plus meaningful, lasting impact on the work you do. |
Life at 5C
We're more than a workplace - we're a team of builders, innovators, and problem-solvers united by a shared purpose: creating infrastructure that powers the technologies transforming our world. Your voice matters here, and we encourage fresh ideas at every level.
Ready to Apply?
If this opportunity sounds like the right fit for you, we'd love to hear your story. Apply today and discover what your future could look like at 5C Data Centers.
5C Data Centers is an equal opportunity employer.
We celebrate diversity and are committed to creating an inclusive environment where everyone can thrive. 5C evaluates qualified applicants without regard to race, color, religion, gender, national origin, age, sexual orientation, gender identity or expression, disability status, or any other legally protected characteristic.
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Medical insurance Vision insurance Dental insuranceJournal
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