🚀 Hiring: Linux + VoIP Systems Administrator (Remote | Full-Time | Contract)

💼 About the Opportunity

We are currently seeking highly skilled and experienced Linux + VoIP Systems Administrators to join a dynamic Infrastructure Engineering, Operations, and Planning team. This is a fully remote, long-term contract opportunity designed for professionals who thrive in high-performance environments and are confident working independently on mission-critical systems.

If you have a passion for Linux systems, VoIP technologies, and maintaining high-availability production environments, this role offers an exciting opportunity to work with a forward-thinking organization while contributing to the backbone of customer-facing communication infrastructure.

This role is ideal for candidates who can think critically, troubleshoot complex issues end-to-end, and make safe decisions in production environments. You will play a vital role in ensuring system reliability, security, and operational excellence.

🌍 Work Setup & Schedule

• Job Type: Full-Time (Contract – Long-Term)
• Location: Fully Remote (Work from anywhere in Pakistan)
• Working Days: Monday to Friday
• Working Hours: Aligned with U.S. Eastern Time (EST/EDT)
• Flexibility: Occasional after-hours work for scheduled maintenance

Candidates must be comfortable working in a time zone shift environment and maintain a professional remote workspace setup.

💰 Compensation

• Weekly Pay Range: Rs 10,000 – Rs 100,000
• Competitive compensation based on experience, expertise, and skill level
• Payment structure aligned with 40-hour work weeks
• Additional compensation may apply for on-call or after-hours work

🧠 Role Overview

As a Linux + VoIP Systems Administrator, you will be responsible for managing and improving Linux-based infrastructure supporting VoIP services. You will work with cutting-edge technologies and tools, ensuring that systems are stable, secure, and scalable.

You will collaborate remotely with infrastructure teams while maintaining the ability to work independently and take ownership of systems.

🔧 Key Responsibilities

🖥️ Linux Infrastructure Management

• Build, deploy, and maintain Linux-based systems in production environments
• Perform system upgrades, patching, and performance tuning
• Monitor system health, logs, and resource utilization
• Implement automation using shell scripting

📞 VoIP Systems Administration

• Configure, manage, and troubleshoot VoIP platforms
• Work with SIP signaling and RTP media streams
• Diagnose call routing, registration, and media flow issues
• Support VoIP systems such as:
  • FreeSWITCH
  • Asterisk
  • Kamailio
  • OpenSIPS
  • SER/OpenSER

⚙️ High Availability & Reliability

• Maintain systems across production, development, and staging environments
• Ensure minimal downtime and high reliability
• Implement redundancy, failover mechanisms, and monitoring systems

🛠️ Troubleshooting & Problem Solving

• Identify root causes of issues across infrastructure layers
• Resolve complex technical problems with minimal supervision
• Ensure safe and controlled changes in live environments

🔐 Security & Compliance

• Implement and maintain system security best practices
• Manage access controls, authentication systems, and auditing
• Ensure compliance with industry standards:
  • ISO 27001
  • SOC 2
  • HIPAA
  • GDPR
  • PCI

📊 Automation & Documentation

• Write scripts for automation and operational efficiency
• Maintain documentation for systems, processes, and changes
• Follow structured change management procedures

✅ Required Qualifications

To be successful in this role, candidates must meet the following requirements:

📌 Experience

• Minimum 3+ years of Linux Systems Administration in 24/7 production environments
• Minimum 3+ years of VoIP experience (SIP, RTP, call flow troubleshooting)

🧩 Technical Skills

• Strong understanding of:
  • Linux system services and architecture
  • Networking fundamentals
  • VoIP protocols (SIP, RTP)
• Hands-on experience with:
  • FreeSWITCH, Asterisk, Kamailio, OpenSIPS, or SER

⚡ Core Competencies

• Strong troubleshooting and analytical thinking skills
• Ability to work independently with minimal supervision
• Experience handling live production systems safely
• Excellent written communication skills in English

🏠 Remote Work Requirements

• Quiet, secure, and distraction-free workspace
• At least two reliable high-speed internet connections
• Willingness to work on company-provided equipment

⭐ Preferred Qualifications

While not mandatory, the following will give you a strong advantage:

• Experience with centralized logging and monitoring systems
• Knowledge of AAA (Authentication, Authorization, Accounting) frameworks
• Familiarity with virtualization platforms:
  • KVM
  • VMware
  • Hyper-V
• Experience with cloud platforms:
  • AWS
  • Microsoft Azure
  • Google Cloud
• Exposure to regulated environments and compliance frameworks

🎯 What Success Looks Like

A successful candidate in this role will:

• Troubleshoot Linux and VoIP issues methodically and efficiently
• Make safe, controlled changes in production environments
• Work independently without constant supervision
• Communicate clearly and document all changes
• Focus on long-term, scalable solutions rather than temporary fixes
• Collaborate effectively with remote teams

📝 Application Questions

Applicants must be prepared to answer the following:

1. How soon can you start working (in calendar days)?
2. Do you have a secure and quiet remote workspace with two reliable internet connections?
3. Are you comfortable working in U.S. Eastern Time (EST/EDT) hours?
4. Do you agree to a background check requirement?
5. Does your resume and LinkedIn profile clearly reflect your experience?
6. What is your expected weekly income (USD) for a 40-hour work week?
7. Are you comfortable working in a strict compliance-driven environment (ISO, HIPAA, etc.)?
8. Are you applying as an individual (not through a third party)?
9. Do you have 3+ years of lead Linux SysAdmin experience in high-availability environments?
10. Do you have 3+ years of experience with VoIP platforms like FreeSWITCH, Asterisk, or Kamailio?

🚀 Why Join?

This is more than just a job—it’s an opportunity to:

• Work on high-scale, production-grade systems
• Gain exposure to global infrastructure standards
• Enhance your expertise in Linux and VoIP technologies
• Work remotely with a professional and skilled team
• Build a long-term career in infrastructure engineering

📩 How to Apply

If you meet the requirements and are ready to take on this challenging yet rewarding role, apply now with:

• Updated Resume
• LinkedIn Profile
• Clear answers to all application questions

🔚 Final Thoughts

This role is best suited for professionals who are technically strong, disciplined, and capable of working independently in critical environments. If you are someone who values stability, security, and performance, and enjoys solving complex infrastructure problems, this opportunity is for you.

Take the next step in your career and become a key part of a high-performing infrastructure team.