Live Production Support & Operations – System administrator

Momentous Ltd.; Ottawa; On-site; CAD 70,000 - 90,000; Full time

Job summary

A leading tech company in Ottawa is seeking a System Administrator for their Live Production Support & Operations team. This role requires strong systems administration skills in both Linux and Windows environments, with a focus on AWS cloud services. The ideal candidate will maintain hosting platforms and provide second-level technical support, ensuring high reliability and performance. A degree in a related technical field is required, along with over five years of relevant experience.

Qualifications

• 5+ years of DevOps or sysadmin experience in Linux and Windows environments.
• 5+ years working in AWS cloud environments (EC2, VPC, S3, etc.).
• Hands-on experience with scripting and automation.

Responsibilities

• Provide second-level technical support for websites and applications.
• Maintain and improve hosting platforms like Plesk and WordPress.
• Monitor system performance and resolve issues efficiently.

Skills

Systems Administration

Networking Protocols

DevOps

AWS Cloud Services

Scripting and Automation

CI/CD Practices

Performance Optimization

Collaboration

Education

Degree in Engineering, Computer Science, or related field

Job description

Live Production Support & Operations – System administrator

At Rebel, we’re in the middle of a bold reinvention. We were early to the cloud (hello, AWS circa 2016), and we’ve kept our hands on the wheel ever since—constantly experimenting, optimizing, and evolving how we serve our customers. Now we’re looking for someone who’s ready to help us take it further.

This isn’t just a support role. You’ll be embedded in a tight-knit, nimble team of engineers and developers, working across both live production and new cloud-based infrastructure. From web hosting to email, DNS to domain management, you’ll help power the services that keep thousands of websites online—and make sure they’re fast, secure, and future-proof.

You’ll be the kind of person who enjoys being in the thick of things: hands‑on, proactive, quietly confident in your problem‑solving, and motivated by a desire to keep improving. If you’re the one your team relies on when something’s on fire, this is your kind of place.

What you’ll do

• Provide second‑level technical support for websites, applications, and email services
• Handle occasional after‑hours support (about 1–2 incidents per week)
• Maintain and improve our hosting platforms: Plesk, Managed WordPress, Virtuozzo VPS, and more
• Own and optimize our infrastructure stack—AWS, Ghost and others
• Support and streamline customer migrations
• Monitor system performance, troubleshoot issues, and resolve them efficiently
• Proactively track costs and propose ways to deliver more value with less spend
• Administer Linux/Unix and Windows environments
• Manage and tune database systems (MSSQL, MySQL)
• Use infrastructure‑as‑code tools like AWS OpsWorks
• Contribute to IT operations process improvement and documentation

What you bring

• Strong systems administration skills and a love of clean, scalable infrastructure
• Deep knowledge of core network protocols and services: TCP/IP, HTTP/S, DNS, SSL, firewalls, load balancers, etc.
• 5+ years of DevOps or sysadmin experience in Linux and Windows environments
• 5+ years working in AWS cloud environments (EC2, VPC, ELB, EBS, S3, RDS, Route53)
• Hands‑on experience with scripting and automation
• Familiarity with Agile/Scrum and modern CI/CD practices
• A mindset for performance, optimization, and reliability
• A collaborative attitude—you support what you build and help others level up too
• A degree in Engineering, Computer Science, or a related technical field

Our approach

• We build things to last: simple, testable, maintainable
• We stay curious: always experimenting, always learning
• We help each other out, and celebrate wins together
• We take action—even when things aren’t perfect yet

Location

This is an in‑office position based in Ottawa.