All roles

Open role

[Remote] Senior Cloud System Administrator

Remote · Portugal Full-time

Note: The job is a remote job and is open to candidates in USA. 5C is a company focused on enabling the infrastructure behind the future of AI. They are seeking a Senior Cloud System Administrator to build, maintain, and optimize scalable cloud infrastructure primarily in Linux environments, ensuring system reliability and operational efficiency.

Responsibilities

  • Mentor team members and foster a culture of knowledge sharing and continuous learning
  • Deploy, manage, and maintain scalable, automated, and well-documented systems
  • Build, scale, and secure cloud infrastructure with a focus on Linux environments
  • Leverage open-source technologies to enhance platform performance and reliability
  • Operate within heterogeneous environments, ensuring seamless integration across systems and applications
  • Serve as an escalation point for complex infrastructure and system issues
  • Collaborate with cross-functional teams to support operational efficiency and system performance
  • Participate in a 24/7 on-call rotation to support critical infrastructure

Skills

  • DEC or bachelor's degree in computer science or a related field (or equivalent experience)
  • 5+ years of experience as a System Administrator in cloud or infrastructure environments
  • Strong experience with Linux system administration and troubleshooting
  • Hands-on experience configuring and managing core services such as HTTPd, MySQL, NFS, DHCP, SSH, DNS, and SNMP
  • Proficiency in at least one scripting or programming language (Shell, Python, Ruby, or Java)
  • Ability to perform effectively under pressure and meet tight deadlines
  • Strong interpersonal and customer service skills
  • Ability to work collaboratively within a team environment

Benefits

  • Health, Dental & Vision
  • 401(k)
  • Life Insurance
  • Voluntary Benefits
  • PTO

Company Overview

  • 5C is a data center that provides AI digital infrastructure, HPC systems, and scalable compute solutions for enterprises. It was founded in 2025, and is headquartered in Saint Laurent, Quebec, CAN, with a workforce of 51-200 employees. Its website is https://5c.ai.
  • More open positions

    [Remote] Global Product Manager - Instruments

    Work from home Full-time role

    [Remote] Senior Manager, Revenue Operations

    Work from home Full-time role

    [Remote] Power System Studies - Project Manager - Data Center

    Work from home Full-time role

    [Remote] Social Media Intern (Volunteer)

    Work from home Full-time role

    [Remote] Account Executive, PR

    Work from home Full-time role

    Lead Data Analyst

    Work from home Full-time role

    Entry Level Independent Financial Professional (Remote)

    Work from home Full-time role

    Remote Data Entry Specialist – Full‑Time & Part‑Time Opportunities at careerzynith – $23/hr Competitive Pay, Flexible Schedule, and Comprehensive Benefits

    Work from home Full-time role

    Senior Commercial General Liability Underwriting Associate REMOTE

    Work from home Full-time role

    Review Managers, Team Leads, Quality Control Reviewers

    Work from home Full-time role

    Technical Support Engineer – Network Infrastructure & Systems Administration (On‑Site) – Data Entry & IT Help Desk Specialist at careerzynith

    Work from home Full-time role

    Account Manager

    Work from home Full-time role

    [Remote] Customer Service Escalation Specialist - (Mid-Day Shift)

    Work from home Full-time role

    Experienced Healthcare Customer Service Representative - Remote Opportunity at careerzynith

    Work from home Full-time role

    Lead Substation Physical Engineer - Remote (Canada)

    Work from home Full-time role

    [Remote] Licensing & Marketing Coordinator

    Work from home Full-time role

    [Remote] Technical Recruiter - Staffing ( Remote )

    Work from home Full-time role

    Healthcare Course Creator (Content Creator / SME) Remote | Social Worker, Psychologist, Pharmacists, Physicians

    Work from home Full-time role

    Business Development Manager - U.S. Navy

    Work from home Full-time role

    [Remote] Analytics Manager, Direct Sales Performance & Forecasting

    Work from home Full-time role

    Remote Customer Support Chat Operator – Earn $25‑$35/hr – Flexible Home‑Based Role at careerzynith

    Work from home Full-time role