System Administrator- Tier III

Advanced Business Solutions; Louisville (KY); On-site; USD 85,000 - 120,000; Full time

Benefits offered by this job

Competitive salary based on experience

Health, dental, and vision insurance

401(k) with company match

Paid time off and holidays

Professional development opportunities

Job summary

Advanced Business Solutions in Louisville, KY is seeking a System Administrator - Tier III who thrives in a fast-paced MSP environment. You will perform advanced troubleshooting across desktops, servers, networking gear, and storage, act as the escalation point for complex issues, and help lead technical projects for our diverse client base.

The ideal candidate combines strong technical skills with customer focus, mentors Tier I–II technicians, collaborates with vendors, and helps implement

Qualifications

• 5–7 years of relevant IT experience.
• 1–3 years in a senior technical or Tier III role.
• Strong Windows desktop/server knowledge (Win10/11, Server 2016/2019/2022/2025).
• Experience with AD/Entra ID, Exchange, M365, and Intune.
• Networking fundamentals and virtualization (Hyper-V/VMware/Azure).
• Excellent written and verbal communication.
• PowerShell scripting and automation preferred.

Responsibilities

• Troubleshoot advanced technical issues across desktops, servers, networking, and storage.
• Collaborate with vendors to support hundreds of applications.
• Serve as escalation point and own high-profile issues.
• Provide leadership for Tier I/II technicians.
• Lead root-cause analysis investigations and implement fixes.
• Plan infrastructure upgrades, cloud migrations, and client onboardings.
• Develop documentation and SOPs, and maintain knowledge base.

Skills

MSP environment experience

RMM tools

Backup/DR knowledge

Security frameworks (HIPAA, SOC2, etc)

Mentoring/leadership

Education

Bachelor’s degree in IT-related field

Tools

ConnectWise

N-Central

Datto

Kaseya

NinjaOne

Job description

Skip to content Tech Support

A Career in Customer Service

When you join ABS, you're starting more than just a new job. You're beginning a new step in your career, where you will be using your technological expertise and communication skills to help people achieve their goals and feel good about the process. We are guided by The ABS Way , a business philosophy that emphasizes people and relationships, and select new team members not only based on their "hard skills", but on their ability to embody our unique way of doing business.

Position: System Administrator - Tier III Location: Louisville, KY Job Id: 498 # of Openings: 1 System Administrator - Tier III

System Administrator - Tier III Reports to: Service Manager. Hours Required: Full-time (40 hours per week). Location: Louisville, KY.

About Advanced Business Solutions

Founded in 1995, Advanced Business Solutions (ABS) is a Customer Service company first and an IT Service company second. We’ve experienced consistent growth and expansion, creating exciting opportunities for advancement within our team.

At ABS, we encourage ingenuity, creativity, and continuous improvement in all aspects of our business. The key to our success is our constant desire to enhance the Customer Experience through technology, teamwork, and trust.

Position Summary

The System Administrator - Tier III (also referred to as a Tier 3 Technician) is a proactive, self-motivated professional with advanced troubleshooting and analytical skills. This individual thrives in a fast-paced, service-oriented environment and holds themselves to a high standard of technical and customer service excellence.

The ideal candidate is detail-oriented, customer-focused, and possesses a positive "can-do" attitude. They exhibit strong critical thinking, perseverance, and adaptability. As an escalation point for complex technical issues, this role demands leadership, ownership, and a passion for creating and implementing effective solutions.

At ABS, our Tier III technicians are leaders—collaborators who bring creativity and empathy to their work. They understand that trust and integrity are the foundation of every customer relationship. The right candidate is knowledgeable, authentic, personable, and passionate about helping people achieve more through technology.

Essential Duties & Responsibilities

• Troubleshoot advanced technical issues involving desktops, servers, networking equipment, and storage appliances.
• Work directly with vendors to support hundreds of applications across diverse customer environments.
• Act as the escalation point for advanced technical problems and take ownership of high-profile or complex issues.
• Provide leadership and serve as a Senior Technical Resource for Tier I and Tier II technicians.
• Lead root-cause analysis (RCA) investigations and implement permanent resolutions.
• Participate in the planning and execution of infrastructure upgrades, cloud migrations, and new client onboardings.
• Develop and maintain technical documentation, standard operating procedures (SOPs), and internal knowledge base articles.
• Collaborate closely with the Service Manager and other engineers to continuously improve processes and customer outcomes.

Core Competencies

• Experience working within a Managed Service Provider (MSP) environment, including ticketing, SLA management, and client escalation processes.
• Proficiency with Remote Monitoring and Management (RMM) tools (e.g., ConnectWise, N-Central, Datto, Kaseya, or NinjaOne).
• Strong understanding of backup and disaster recovery solutions such as Datto, Veeam, or Acronis.
• Familiarity with endpoint security, conditional access, MFA, and compliance frameworks (HIPAA, SOC2, etc.).
• Proven ability to mentor others, manage priorities, and deliver results in a dynamic, customer-facing environment.

Qualifications

Required:

• 5–7 years of relevant IT experience.
• 1–3 years of experience in a senior technical or Tier III role.
• Strong working knowledge of Microsoft Desktop and Server operating systems, including Windows 10/11 and Server 2016/2019/2022/2025.
• Expertise with Active Directory, Microsoft Entra ID (Azure AD), Exchange, Microsoft 365, and Intune.
• Strong understanding of networking principles, including switches, routers, firewalls, and wireless technologies.
• Proficiency in server virtualization (on-premise and cloud-hosted, e.g., Hyper-V, VMware, Azure).
• Excellent written, verbal, and interpersonal communication skills.
• Strong PowerShell scripting and automation abilities preferred.

Preferred:

• Bachelor’s degree in an IT-related field.
• Industry certifications (Microsoft, VMware, Cisco, Meraki, CompTIA, etc.).
• Experience with storage technologies (NAS, SAN, cloud storage such as Azure Files or AWS).
• Previous experience supporting multiple client environments in an MSP setting.

Benefits

• Competitive salary based on experience.
• Health, dental, and vision insurance.
• 401(k) with company match.
• Paid time off and holidays.
• Professional development opportunities and certification reimbursement.
• Continuous learning and growth in a collaborative, team-driven culture.

Join Our Team

From Painter to VP of Service

Buck’s story is a testimony to the professional growth you can expect as a part of our team. He began his career at ABS painting walls before being taught how to install cable, and now, years later he is the VP of Service. Watch the video to hear more about Buck’s story and learn how you could take the next step in your career by joining the ABS team.

What Life at ABS Looks Like