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L3 Support Engineer Jobs (NOW HIRING)

L2 Support Engineer Location: New York, NY (Onsite) Contract Duration: 12 Months Job Summary: A ... Handle escalation of issues to L3, raising incidents, and coordinating communication with ...

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L3 Support Engineer information

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How much do l3 support engineer jobs pay per hour?

As of Aug 16, 2026, the average hourly pay for l3 support engineer in the United States is $39.87, according to ZipRecruiter salary data. Most workers in this role earn between $29.57 and $46.63 per hour, depending on experience, location, and employer.

How does an L3 Support Engineer typically interact with other technical teams during complex incident resolution?

L3 Support Engineers often serve as the final escalation point for technical issues, collaborating closely with development, QA, and operations teams. During complex incidents, they work alongside L1 and L2 support to gather detailed information, then coordinate with product engineers or system architects to diagnose and resolve root causes. This role requires strong communication skills, as you'll often translate technical findings for both technical and non-technical stakeholders. Successful L3 engineers build cross-functional relationships, ensuring efficient problem-solving and continuous improvement of support processes.

What is an L3 Support Engineer?

L3 Support Engineers, also known as Level 3 or Tier 3 support engineers, are technical experts who handle the most complex and advanced issues that cannot be resolved by lower-level support teams. They are responsible for diagnosing and troubleshooting escalated problems, often involving in-depth analysis of systems, software, or hardware. L3 Support Engineers may work directly with developers to resolve bugs, create patches, or suggest improvements, ensuring that critical technical issues are resolved efficiently. Their expertise is crucial for maintaining system stability and customer satisfaction in highly technical environments.

What are the key skills and qualifications needed to thrive as an L3 Support Engineer?

To thrive as an L3 Support Engineer, you need advanced troubleshooting abilities, deep technical expertise in relevant systems or applications, and typically a degree in computer science or a related field. Familiarity with diagnostic tools, scripting languages, ticketing systems (like ServiceNow or Jira), and relevant certifications such as ITIL or vendor-specific credentials are commonly required. Strong analytical thinking, communication skills, and a customer-centric mindset help in resolving complex issues and collaborating with cross-functional teams. These skills and qualities are vital for efficiently resolving high-level technical problems and maintaining system reliability in enterprise environments.

What is the difference between L3 Support Engineer vs Network Support Engineer?

AspectL3 Support EngineerNetwork Support Engineer
CertificationsITIL, CompTIA Network+, Cisco CCNACCNA, CCNP, CompTIA Network+
Work EnvironmentData centers, enterprise IT, technical support teamsNetwork operations centers, enterprise networks, troubleshooting teams
Industry UsageIT services, tech companies, telecomTelecom, IT infrastructure, enterprise networking

Both roles require networking certifications like CCNA and involve troubleshooting complex technical issues. While L3 Support Engineers handle escalated technical problems across various IT systems, Network Support Engineers focus specifically on network infrastructure and connectivity. The roles often overlap in enterprise environments, but L3 Support Engineers typically have broader responsibilities across multiple systems, whereas Network Support Engineers specialize in network-related issues.

More about L3 Support Engineer jobs

What are the most commonly searched types of L3 Support Engineer jobs?

The most popular types of L3 Support Engineer jobs are:

What states have the most L3 Support Engineer jobs?

States with the most job openings for L3 Support Engineer jobs include:

Infographic showing various L3 Support Engineer job openings in the United States as of August 2026, with employment types broken down into 100% Contract. Highlights an 100% In-person job distribution, with an average salary of $82,930 per year, or $39.9 per hour.

Application Support Level 3 (L3 Support / Site Reliability Engineer)

Conch Technologies Inc

Blue Ash, OH • On-site

Contractor

Posted 23 days ago


Job description

Job Title: Application Support Level 3 (L3 Support / Site Reliability Engineer)

Location: Blue Ash, OH (Onsite – 5 Days/Week)
Duration: 18 Months

 Job Overview

We are seeking an Application Support Level 3 (L3 Support / Site Reliability Engineer) to support a next-generation Point of Sale (POS) platform. This role is embedded within the engineering team and works closely with developers throughout the Software Development Life Cycle (SDLC). The ideal candidate is a strong problem solver with excellent troubleshooting skills, experience handling production incidents, and a passion for improving system reliability.

Candidates should be comfortable working in a fast-paced production environment, participating in on-call support, traveling for new store deployments, and collaborating with cross-functional teams to ensure high system availability.

 Required Qualifications
  • Bachelor's degree in Computer Science, Information Systems, or a related field (or equivalent experience).
  • Experience in Application Support, Site Reliability Engineering (SRE), Operations, or Software Engineering.
  • Strong production support and troubleshooting experience.
  • Experience managing Major Incidents (P1/P2) and coordinating incident response.
  • Knowledge of Root Cause Analysis (RCA) methodologies such as 5 Whys, Fishbone Analysis, and Timeline Reconstruction.
  • Experience monitoring applications and infrastructure using enterprise monitoring tools.
  • Understanding of Java applications; Go experience is a plus.
  • Exposure to SQL or NoSQL databases such as MongoDB.
  • Experience with scripting using Shell, PowerShell, or Python is preferred.
  • Familiarity with ServiceNow, Jira, Confluence, Splunk, Grafana, Dynatrace, or similar monitoring and ITSM tools.
  • Exposure to Point of Sale (POS) systems is preferred.
  • Understanding of Agile methodologies; Scrum Master experience is a plus.
  • Knowledge of PCI-DSS or payment card security standards is a plus.
  • Excellent verbal and written communication skills.
  • Ability to work onsite five days per week.
  • Willingness to travel for store deployments, pilots, and production rollouts.
  • Ability to participate in a rotating 24x7 on-call schedule.
 Key Responsibilities
  • Provide Level 3 production support for enterprise Point of Sale applications.
  • Monitor production systems and respond quickly to incidents and service interruptions.
  • Lead and coordinate Major Incident Management activities for critical production issues.
  • Drive incidents through resolution while meeting established SLAs.
  • Perform Root Cause Analysis (RCA) and implement corrective actions to prevent recurring issues.
  • Troubleshoot application, infrastructure, cloud, and store-level production issues.
  • Partner with developers, infrastructure teams, and business stakeholders to resolve complex problems.
  • Test application and infrastructure changes before production deployment.
  • Participate in application design, development, coding, and unit testing activities following SDLC best practices.
  • Develop functional specifications and implementation plans for application enhancements.
  • Create estimates and work plans for development and deployment activities.
  • Execute break/fix activities, service requests, and production support tasks.
  • Maintain operational procedures, scripts, and documentation.
  • Continuously improve software delivery processes and engineering standards.
  • Participate in Agile ceremonies and support sprint planning, refinement, and testing activities.
  • Build strong partnerships across engineering, infrastructure, and business teams.
  • Lead projects and mentor junior team members when needed.
 Preferred Skills
  • Experience supporting enterprise Point of Sale (POS) environments.
  • Knowledge of Java and Go programming.
  • Experience with SQL and MongoDB.
  • Experience using monitoring and observability tools such as Splunk, Dynatrace, or Grafana.
  • Familiarity with cloud platforms and hybrid environments.
  • Experience with Agile and Scrum practices.
  • Understanding of payment processing and PCI compliance.
 Top Skills Required
  • Major Incident Management with hands-on experience leading P1/P2 production incidents.
  • Strong Root Cause Analysis (RCA) and Problem Management experience.
  • Production troubleshooting across application, cloud, infrastructure, and POS environments.