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Tier 3 Engineer Jobs (NOW HIRING)

PROVEN IT COLORADO LLC

Tier III Engineer

Aurora, CO · On-site

$70K - $90K/yr

Description The Tier III Engineer is responsible for server, network, application, and virtual CIO support related to technical troubleshooting and maintenance. This is an expert level of customer ...

Proven Business Systems LLC

Tier 3 Engineer

Schaumburg, IL · On-site

$75K - $100K/yr

Description The Tier III Engineer is responsible for server, network, application, and virtual CIO support related to technical troubleshooting and maintenance. This is an expert level of customer ...

Proven IT

Tier 3 Engineer

Schaumburg, IL · On-site

$75K - $100K/yr

Job Type Full-time Description The Tier III Engineer is responsible for server, network, application, and virtual CIO support related to technical troubleshooting and maintenance. This is an expert ...

Quo Vadis Inc.

Tier 3 Engineer

Matthews, NC

$65K - $85K/yr

What You'll Own As a Tier 3 Engineer, you are the highest level of technical escalation. You will design, diagnose, and resolve complex infrastructure challenges across diverse environments while ...

teKnoluxion

IEC Tier 3 Engineer

Springfield, VA · On-site

Join our growing team supporting the NGA customer missions as an IEC Tier 3 Engineer . Responsibilities What you get to do every day : The engineering team is looking for a driven Senior Systems ...

teKnoluxion

IEC Tier 3 Engineer

Arnold, MO

Join our growing team supporting the NGA customer missions as an IEC Tier 3 Engineer . Responsibilities What you get to do every day : The engineering team is looking for a driven Senior Systems ...

teKnoluxion

IEC Tier 3 Engineer

Springfield, VA · On-site

Join our growing team supporting the NGA customer missions as an IEC Tier 3 Engineer . What you get to do every day : The engineering team is looking for a driven Senior Systems Engineer that can ...

teKnoluxion

IEC Tier 3 Engineer

Springfield, VA · On-site

Join our growing team supporting the NGA customer missions as an IEC Tier 3 Engineer . Responsibilities What you get to do every day : The engineering team is looking for a driven Senior Systems ...

IT Veterans

Tier 3 Unified Communications/Audio Visual Engineer Annapolis Junction, MD IT Veterans is seeking a Tier 3 Unified Communications/Audio Visual Engineer to provide expert-level engineering ...

InterImage

Tier 3 Network Engineer

Chantilly, VA

Tier 3 Network Engineer Company: InterImage InterImage is actively seeking an energetic, curious, and skilled engineer to join our team in Northern VA! We are looking for a Tier 3 Network Engineer to ...

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Tier 3 Engineer information

What are the key skills and qualifications needed to thrive as a Tier 3 Engineer, and why are they important?

To thrive as a Tier 3 Engineer, you need advanced troubleshooting skills, deep technical expertise in network and systems administration, and typically a relevant degree or certifications like CCNP, MCSE, or equivalent experience. Familiarity with enterprise-level tools such as ticketing systems, remote monitoring and management (RMM) platforms, and diagnostic utilities is essential. Exceptional analytical thinking, clear communication, and the ability to work under pressure are vital soft skills for excelling in this role. These capabilities are crucial for resolving complex technical issues efficiently, supporting lower-tier engineers, and ensuring reliable IT operations for organizations.

What is the difference between Tier 3 Engineer vs Tier 2 Engineer?

AspectTier 3 EngineerTier 2 Engineer
CertificationsAdvanced certifications like Cisco CCNP, CompTIA Network+Entry to mid-level certifications such as CompTIA A+ or Network+
Work EnvironmentComplex troubleshooting, network design, and advanced supportBasic support, routine maintenance, and troubleshooting
ResponsibilitiesHandling escalated issues, implementing solutions, mentoring Tier 1/2Responding to user tickets, basic network/configuration tasks

In summary, a Tier 3 Engineer typically handles more complex problems, possesses advanced certifications, and plays a mentorship role, whereas a Tier 2 Engineer focuses on routine support and basic troubleshooting. The two roles differ mainly in complexity, expertise, and responsibilities within IT support hierarchies.

What are Tier 3 Engineers?

Tier 3 Engineers are highly skilled technical professionals who handle the most complex and challenging IT issues that cannot be resolved by lower-tier support staff. They provide advanced troubleshooting, root cause analysis, and often work directly with product developers or vendors to resolve critical problems. Their expertise is crucial for resolving system outages, security incidents, and infrastructure issues, ensuring minimal downtime and optimal system performance. Tier 3 Engineers may also contribute to developing support documentation and training for other support tiers.

How does a Tier 3 Engineer typically collaborate with Tier 1 and Tier 2 support teams?

Tier 3 Engineers often serve as the final escalation point for complex technical issues that cannot be resolved by Tier 1 or Tier 2 support teams. They regularly collaborate by reviewing detailed case notes, providing advanced troubleshooting steps, and sometimes conducting training sessions to help lower-tier staff improve their technical knowledge. Effective communication and documentation are crucial, as Tier 3 Engineers must clearly relay solutions and updates to both the support teams and sometimes directly to clients. This collaborative environment ensures that issues are resolved efficiently and knowledge is continuously shared across the support hierarchy.
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What job categories do people searching Tier 3 Engineer jobs look for? The top searched job categories for Tier 3 Engineer jobs are:
Tier 3 Engineer jobs near you
Infographic showing various Tier 3 Engineer job openings in the United States as of May 2026, with employment types broken down into 1% Locum Tenens, 1% As Needed, 97% Full Time, and 1% Contract. Highlights an 95% Physical, 2% Hybrid, and 3% Remote job distribution.

Tier 3 Engineer

On Call Computer Solutions, LLC

Tallahassee, FL • On-site

Full-time

Posted 8 days ago

Job description

Are you an experienced Tier 3 Engineer who enjoys solving meaningful technical problems instead of living in reactive chaos?

Do you take pride in building stable, secure, well-documented environments that keep clients productive and protected?

On Call Computer Solutions is seeking a proactive, client-focused Tier 3 Engineer to support and improve the technology environments of our managed services clients. This role is ideal for someone who can think beyond break/fix work, prevent issues before they become outages, and own escalations through resolution.

The right candidate brings strong systems administration skills, solid communication, and the ability to balance daily support, proactive maintenance, documentation, and project work in a fast-paced MSP environment. You should be comfortable working across servers, Microsoft 365, identity, backups, virtualization, endpoint management, and core infrastructure while keeping security and client experience front and center.

Key Deliverables / KPIs

  • Proactively administer and maintain client environments, including Windows Server, Active Directory, Microsoft 365, Entra ID/Azure AD, virtualization platforms, backup systems, and core infrastructure; keep systems healthy, patched, monitored, and operating with minimal recurring issues and downtime.
  • Own escalated support tickets and infrastructure tasks from diagnosis through completion, including root-cause troubleshooting, permissions, onboarding/offboarding, server maintenance, line-of-business application support, and small-to-mid-sized technical projects; document work clearly and communicate effectively with clients and internal teams.
  • Improve client security and resilience by enforcing standards for patching, MFA, endpoint hygiene, backup verification, disaster recovery readiness, system documentation, and change control; identify risks early and recommend practical remediation steps that improve stability, security, and long-term service quality.
  • Other relevant duties as assigned.

Required Qualifications

  • 3+ years of hands-on systems administration, infrastructure support, or MSP engineering experience
  • Strong experience with Windows Server, Active Directory, Microsoft 365, DNS, DHCP, virtualization, backup/recovery, and endpoint management
  • Working knowledge of networking fundamentals, including switching, routing, VPNs, firewalls, and remote access
  • Experience with ticket-driven service delivery, documentation, patch management, and proactive maintenance
  • Strong troubleshooting skills with the ability to communicate clearly to both technical and non-technical users

Preferred Qualifications

  • MSP experience supporting multiple client environments
  • Experience with Azure, Entra ID, Intune, and cloud migrations
  • Familiarity with business continuity and disaster recovery testing
  • Experience working in security-conscious or compliance-driven environments
  • Relevant Microsoft, CompTIA, or vendor certifications
Employment Type: FULL_TIME

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