Senior System Administrator

Company Overview

Technijian has proudly provided Managed IT Services for over 25 years. With locations in Irvine (USA) and India serving clients across the USA, we deliver 24/7 support in cloud computing, cybersecurity, and comprehensive server/networking consultation and implementation.

We are an employee-focused company that values upward mobility, continuous learning, and a supportive, growth-oriented environment.

Role Overview

We are seeking a Senior System Administrator to take ownership of critical infrastructure and managed services for our US-based clients. This is a senior, hands-on technical role for someone who is highly disciplined, detail-oriented, and committed to delivering accurate, high-quality results at a fast pace.

You will be responsible for maintaining and improving Windows server environments, virtualized infrastructure, core applications, and network services, while also guiding junior team members when required.

Ideal Candidate Profile

You are someone who:

• Is Detail-Oriented & Analytical

You carefully analyze issues, validate assumptions, and ensure nothing is missed before implementing changes.

• Is Self-Disciplined & Results-Driven

You manage multiple tickets and projects simultaneously without sacrificing quality or documentation.

• Makes Decisive, Quality-Focused Decisions

You can make quick technical decisions within established standards, policies, and procedures.

• Is Structured & Process-Oriented

You follow and enforce best practices, SOPs, and security controls, and help improve them where needed.

• Leads Through Expertise

You are comfortable coaching and training others, providing clear direction and close follow-up when delegating.

As part of our interview process, candidates will complete a behavior and skills assessment to ensure strong alignment with the expectations and standards for this role.

Key Responsibilities

• Provide specialized technical support and managed services across Windows servers, virtualization, cloud services, and core applications for US-based clients.
• Administer and maintain Windows Server environments (2012, 2016, 2019 and above), Active Directory, Group Policy, DNS, DHCP, file/print services, and related infrastructure.
• Support and manage Microsoft 365 / Office 365 and G-Suite environments, including email, security, policies, and user provisioning.
• Manage and troubleshoot VMware environments, including virtual machines, resource allocation, and performance optimization.
• Administer Microsoft SQL Server and Exchange (on-prem and/or hybrid), including basic maintenance, backup, and troubleshooting.
• Support and maintain network infrastructure, including switches, firewalls, and routers (e.g., Cisco Meraki, Sophos), working closely with the networking team where required.
• Perform incident resolution, root-cause analysis, and problem management within defined SLAs and quality standards.
• Plan and execute patching, upgrades, and migrations, including server upgrades, OS hardening, and cloud or on-prem transitions (AWS/Azure).
• Implement and monitor backup, disaster recovery, and security controls, ensuring systems meet availability, integrity, and confidentiality requirements.
• Create and maintain accurate documentation, including runbooks, SOPs, network diagrams, and configuration records.
• When required, provide oversight, mentoring, and structured guidance to team members to ensure adherence to company policies, procedures, and timelines.
• Collaborate with US stakeholders and internal teams, communicating clearly on technical status, risks, and action plans.

Technical Requirements

• 5+ years of hands-on experience as a System Administrator / Senior System Administrator / System Engineer in a managed services or enterprise environment.
• Strong experience with:
• Microsoft Windows Server (2012/2016/2019+) administration – 5+ years (Required)
• VMware administration – 5+ years (Required)
• Microsoft Exchange (on-prem/hybrid) – 5+ years (Required)
• Microsoft SQL Server – 5+ years (Required)
• IP networking (Routing, TCP/IP, VLANs, VPNs) – 5+ years (Required)
• Solid understanding of Microsoft 365 / Office 365, including Exchange Online, SharePoint, Teams, and security/compliance features.
• Experience with cloud platforms such as AWS and/or Azure, including migration or hybrid setups.
• Strong troubleshooting skills across servers, networks, and applications with a methodical, root-cause-driven approach.
• Experience with monitoring tools, log analysis, and performance tuning preferred.

Behavioral & Leadership Requirements

• Highly organized, structured, and accurate in all aspects of work, including documentation and communication.
• Able to balance multiple simultaneous projects in a fast-paced, service-driven environment while maintaining high standards.
• Comfortable making quick, well-judged decisions within a clearly defined span of control.
• Strong sense of ownership and accountability for systems and outcomes.
• Willing and able to coach and train others, providing clear expectations, feedback, and follow-up.
• Willing to complete a behavior and skills assessment as part of the hiring process.

Education & Certifications

• Bachelor's degree in Computer Science, Information Technology, or a related field (Preferred).
• Relevant certifications are a plus and strongly preferred, such as:
• MCSE / MCSA / Microsoft 365 / Azure
• VMware (VCP)
• CCNA / CCNP / equivalent networking certifications – 5 years of networking experience (Required)

Pay: $60, $100,000.00 per year

Benefits:

• 401(k)
• 401(k) matching
• Dental insurance
• Flexible schedule
• Flexible spending