Systems Administrator - Senior

About Total Network Solutions

Total Network Solutions (TNS) is a fast-growing, U.S.-based Managed IT Services Provider supporting clients nationwide, with a strong presence in Southern California. We deliver 24/7/365 IT support, cybersecurity, cloud, and Microsoft 365 services to organizations across manufacturing, financial services, government contracting, and professional services.

We are scaling fast—and we need a Senior Systems Engineer who can operate at a high technical level, lead by example, and help us standardize, automate, and elevate our service delivery.

The Role

This is a full-time, on-site role in Long Beach, CA.

Candidates must live in Los Angeles or Orange County.

You’ll serve as a senior escalation point, project engineer, and technical leader across multiple client environments. This is not internal IT—this is real MSP engineering work across diverse, multi-tenant environments.

What You’ll Be Doing

• Act as Tier 3 / senior escalation for complex client issues
• Design, implement, and support Microsoft 365, Azure, Entra ID, Intune, and Windows Server environments
• Lead and execute client projects (migrations, security hardening, cloud initiatives)
• Design and support network infrastructure (Meraki / Fortinet firewalls, VPNs, switching)
• Build and maintain PowerShell and/or Python automation
• Standardize client environments and improve operational efficiency
• Mentor junior engineers and raise the technical bar of the team
• Create and maintain clear, usable documentation
• Collaborate with leadership on tooling, architecture, and best practices

What We’re Looking For

You’ll be successful here if you have:

• 5+ years experience as a Systems Engineer or SysAdmin in an MSP or consulting environment
• Deep hands-on experience with:
• Microsoft 365 (Exchange, SharePoint, Teams)
• Azure / Entra ID
• Intune / endpoint management
• Windows Server & Active Directory
• Strong networking fundamentals (firewalls, VPNs, DNS, DHCP)
• Experience with MSP tools (Autotask, NinjaRMM, Huntress – or similar)
• Scripting/automation experience (PowerShell required; Python a plus)
• Excellent troubleshooting skills and calm under pressure
• Strong communication skills with both clients and internal teams
• Experience configuring and managing Fortinet, Meraki, and Ubiquiti Network devices

Highly preferred:

• Meraki and/or Fortinet experience
• MSP security stack experience
• Certifications (Microsoft, CCNA, VMware, etc.)

Core Values

• Customer-centricity: Putting customers' needs and satisfaction first and striving always to provide exceptional service.
• Reliability: Committed to providing dependable, consistent, and available best practice services and solutions whenever needed. We also ensure we are reliable, available, and committed to the TNS Team.
• Expertise: A team of highly skilled professionals knowledgeable and experienced in various IT domains.
• Proactive approach: We identify and address potential issues before they become major problems and offer proactive solutions to improve the efficiency and security of the systems we support.
• Communication: Maintaining clear and open lines of communication with clients, partners, and team members, ensuring transparency and updates on the status of tickets, projects, and services.
• Integrity is at the very core of our company culture. We conduct business with honesty, transparency, and ethical practices, ensuring the confidentiality and security of client data. Achieving and maintaining customer trust is paramount.
• Continuous improvement: Striving for excellence through ongoing learning, training, and improving processes and services.

Mission Statement

At Total Network Solutions, we aim to empower small and medium-sized businesses with top-notch Managed IT and cybersecurity Services. We strive to be the trusted partner that understands and caters to our customers' unique needs, providing customer-centric solutions.

Committed to reliability, we offer a proactive approach to IT management, ensuring seamless operations and peace of mind for our clients. Through open and effective communication, we build strong relationships and foster a sense of trust and transparency.

Integrity is at the core of everything we do, as we prioritize honesty and ethical practices. Embracing a continuous improvement mindset, we adapt to ever-evolving technologies and industry standards to deliver cutting-edge solutions. Just like a family, we treat our customers as our own, working diligently to serve their best interests and contribute to the success of both their businesses and our local communities.

Pay

Pay: $90,000.00 - $125,000.00 per year

Benefits:

• 401(k)
• Dental insurance
• Health insurance
• Paid time off
• Vision insurance

Work Location:

In person