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L3 Engineer Jobs (NOW HIRING)

Mainframe Z/OS Technical Lead / L3 Engineer We are seeking a senior Mainframe Z/OS Technical Lead to act as the client-side SME overseeing outsourced mainframe services and guiding a small internal ...

Network Engineer - L3 Location: Los Angeles, CA / Rosemead, CA - Onsite Type: 6-12 Months Contract Experience: 10+ Years We are seeking an experienced Network Engineer (L3) to support and maintain ...

Mainframe Infra Engineer

Mclean, VA · On-site

$50.25 - $64.75/hr

Job Title Mainframe z/OS Technical Lead / L3 Engineer We are seeking a senior Mainframe Z/OS Technical Lead to act as the client-side SME overseeing outsourced mainframe services and guiding a small ...

L3 Infrastructure Engineer

Madison, AL · On-site

$92K - $120K/yr

L3 Infrastructure Engineer Location: Madison, AL Duration: Full Time Tier 3 (L3) IT Infrastructure engineers comprise a technical team that deals with technical problems. Troubleshooting ...

L3 Support Engineer

Mount Laurel, NJ · On-site

$50 - $56/hr

L3 Support Engineer Locations : Mount Laurel, NJ Duration: 6 Months Pay Range: $50 - $56/Hour on W2 (All inclusive) - Applicants must be willing to work on W2 Introduction We are seeking a skilled L3 ...

... L3 engineering, Perform Physical and Logical IMAC, Network Troubleshooting, and Operationalization functions for project-related activities such as inventory updates, change ticket process, etc.

Network Engineer L3 Responsible for all aspects of network planning, design, installation and configuration. 7+ years as a Network Engineer or Architect Experience supporting and leading junior ...

L3 Infrastructure Engineer

Buffalo, WV · On-site

$93K - $122K/yr

Tier 3 (L3) IT Infrastructure engineers comprise a technical team that deals with technical problems. Troubleshooting, configuration, database administration, and repair for server, network ...

L3 Infrastructure Engineer

Buffalo, WV · On-site

$93K - $122K/yr

Tier 3 (L3) IT Infrastructure engineers comprise a technical team that deals with technical problems. Troubleshooting, configuration, database administration, and repair for server, network ...

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L3 Engineer information

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$39K

$101.8K

$137.5K

How much do l3 engineer jobs pay per year?

As of Jun 4, 2026, the average yearly pay for l3 engineer in the United States is $101,752.00, according to ZipRecruiter salary data. Most workers in this role earn between $84,000.00 and $116,500.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as an L3 Engineer, and why are they important?

To thrive as an L3 Engineer, you need advanced expertise in troubleshooting, system administration, and deep technical knowledge of network and server infrastructure, often backed by a relevant degree and certifications like CCNP or MCSE. Familiarity with enterprise monitoring tools, ticketing systems, virtualization platforms, and scripting languages is typically required. Strong analytical thinking, effective communication, and the ability to work under pressure are valuable soft skills for this role. These competencies ensure timely and effective resolution of complex issues, minimizing downtime and maintaining seamless IT operations.

What types of technical issues or projects does an L3 Engineer typically handle compared to L1 and L2 support roles?

L3 Engineers are responsible for resolving the most complex technical issues that cannot be addressed by L1 (first-line) or L2 (second-line) support teams. They often work on advanced troubleshooting, root cause analysis, and implementing permanent fixes for recurring problems. Additionally, L3 Engineers may lead critical infrastructure projects, develop automation scripts, and collaborate closely with development or architecture teams to improve system reliability. Their role often involves a mix of incident management, proactive system enhancements, and knowledge sharing with junior engineers.

What are L3 Engineers?

L3 Engineers, or Level 3 Engineers, are highly skilled technical professionals who provide expert support for complex IT systems and infrastructure. They are the final escalation point for technical issues that cannot be resolved by Level 1 (L1) or Level 2 (L2) support teams. L3 Engineers typically handle advanced troubleshooting, root cause analysis, and the implementation of solutions for critical problems. They may also be involved in designing, configuring, and maintaining systems, ensuring reliability and performance. Their expertise is crucial for resolving high-impact incidents and preventing future issues.

What is the difference between L3 Engineer vs Network Engineer?

AspectL3 EngineerNetwork Engineer
CertificationsCCNA, CCNP, CompTIA Network+CCNA, CCNP, CompTIA Network+
Work EnvironmentData centers, enterprise networks, telecomsCorporate offices, data centers, service providers
ResponsibilitiesNetwork troubleshooting, configuration, supportDesign, implement, maintain network infrastructure
Industry UsageIT, telecommunications, enterpriseIT, telecommunications, service providers

Both L3 Engineers and Network Engineers often hold similar certifications and work in comparable environments. While L3 Engineers focus on advanced troubleshooting and support within IT infrastructure, Network Engineers typically design and implement network systems. The roles overlap in skills and industry usage, but L3 Engineers tend to handle escalated issues, whereas Network Engineers focus on network planning and deployment.

More about L3 Engineer jobs
What cities are hiring for L3 Engineer jobs? Cities with the most L3 Engineer job openings:
What states have the most L3 Engineer jobs? States with the most job openings for L3 Engineer jobs include:

Full-time

Posted 15 days ago


Job description

Complete Network seeks a highly skilled and experienced Level 3 engineer to join our team. In this role, you will provide escalated technical support, resolve complex issues, and make significant contributions to our company's success. You will also play a vital role inmaintainingand enhancing our internal IT infrastructure. Weseeka motivated and results-driven individual with an entrepreneurial mindset, a strong understanding of modern IT infrastructure, and a passion for delivering exceptional customer service.
Key Responsibilities:

  • Serve as the highest-tier escalation point for the most complex and persistent technical issues across all client environments, including on-premises infrastructure, cloud platforms, networking, security, and critical applications.
  • Provide expert-level troubleshooting and problem resolution for all aspects of existing Azure Virtual Desktop (AVD) environments, including performance optimization, complex user profile issues, and integration challenges.
  • Providetimelyand effective technical support to clients, ensuring their systems run smoothly and meet their business needs.
  • Create, implement,monitor, and troubleshoot client backup and recovery solutions to ensure data integrity and successful restoration procedures.
  • Maintain and enhance critical internal IT infrastructure, including servers, networks, applications, and systems, to ensureoptimalperformance and reliability.
  • Proactivelymonitorand maintain critical client infrastructure, including servers, networks, applications, and systems,anticipatingpotential issues and implementing preventative measures.
  • Create,maintain, and update comprehensive technical documentation, including standard operating procedures (SOPs), knowledge base articles, and troubleshooting guides, setting a high standard for quality and detail.

Qualifications:

  • Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent extensive professional experience.
  • Minimum of 5+ years of progressive experience in a Managed Services Provider (MSP) environment, with a demonstratedtrack recordof successfully resolving complex client challenges across diverse IT landscapes.
  • Exceptional ability to troubleshoot and resolvehighly complex, ambiguous technical issues with minimal supervision, consistentlyidentifyingrootcausesand implementing effective, long-term solutions.
  • Provenexpertiseand deep understanding across a broad spectrum of modern IT infrastructure:
  • Azure Virtual Desktop (AVD): Expert-level troubleshooting experience for existing AVD environments, including advanced performance tuning, complex user profile issues, application delivery, and intricate network/identity integrations.
  • Windows Server Administration: Expertproficiencyin Active Directory design, implementation, and troubleshooting; advanced GPO management; and advanced knowledge of DNS, DHCP, and IIS, including clustering, high availability, and performance optimization. Experience with Windows Server automation and scripting (PowerShell) for complex tasks.
  • Networking: In-depth knowledge of TCP/IP, routing protocols, switching technologies, network security, andfirewallmanagement in complex and hybrid environments.
  • Virtualization: Advanced experience with VMware and/or Hyper-V, including virtualization design, implementation, and management at an enterprise level; experience with clustering, high availability, and disaster recovery in virtualized environments; and knowledge of virtualization automation and orchestration.
  • Microsoft Modern Workplace: Expert-level ability to troubleshoot and resolve issues within Microsoft 365, Teams, SharePoint, and Intune, ensuring seamless user experiences, including advanced security, compliance, and automation capabilities.
  • Backup and Recovery: Proven experience in designing, implementing, and troubleshooting backup and recovery solutions and disaster recovery planning, including in-depth knowledge of backup methodologies, technologies (e.g., Veeam), and best practices.
  • Exceptional verbal and written communication skills, with the ability to articulate highly technical information clearly and concisely to both technical and non-technical audiences, including senior leadership and clients.
  • Demonstrated strong leadership and mentoring abilities, witha track recordof successfully guiding and developing junior engineers.
  • Highly approachable and collaborative, fostering an environment where team members feel comfortable seeking guidance and escalating complex issues.
  • Proven ability to analyze complex situations,identifyroot causes, and develop practical solutions, focusing on proactive problem-solving.
  • Ability to work effectively within a team and collaborate with colleagues across departments.

Preferred Skills:

  • Extensive experience with ConnectWise Automate and/or ConnectWise Manage.
  • Experience in configuring, managing, and analyzing data from SIEM tools to detect and respond to security threats.
  • Industry certifications such as Microsoft Certified: Azure Virtual Desktop Specialty, Microsoft Certified: Azure Solutions Architect Expert, CompTIA Network+, CompTIA Security+, AWS Certified Solutions Architect.
  • Strong understanding of ITIL or other IT service management frameworks.