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Application Support Engineer L3 Jobs (NOW HIRING)

Neshent Technologies

We are seeking a skilled Senior Application Support Engineer to provide L3 application support across production and non-production environments. The role requires strong Java and React.js expertise ...

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How much do application support engineer l3 jobs pay per hour?

As of Sep 10, 2026, the average hourly pay for application support engineer l3 in the United States is $48.53, according to ZipRecruiter salary data. Most workers in this role earn between $38.70 and $56.73 per hour, depending on experience, location, and employer.

What is an application support engineer L3?

An Application Support Engineer L3 (Level 3) is a senior technical professional responsible for resolving complex issues in software applications that cannot be addressed by lower-level support teams. They troubleshoot, diagnose, and fix advanced application problems, often working closely with development teams to identify bugs or implement fixes. L3 engineers also contribute to improving application performance, security, and stability. Their role typically involves deep technical expertise, scripting, and sometimes code-level analysis to ensure business-critical applications run smoothly.

What are the key skills and qualifications needed to thrive as an application support engineer L3?

To thrive as an Application Support Engineer L3, you need deep knowledge of application troubleshooting, scripting, incident management, and typically a degree in computer science or a related field. Expertise with monitoring tools, SQL databases, ITSM systems (like ServiceNow), and relevant certifications (such as ITIL) is often required. Strong analytical thinking, effective communication, and the ability to remain calm under pressure are crucial soft skills. These capabilities ensure rapid resolution of complex technical issues, minimize downtime, and support seamless business operations.

What are some common challenges faced by application support engineer L3s, and how can they be effectively managed?

Application Support Engineer L3s often encounter complex issues that require deep technical troubleshooting and collaboration across multiple teams. A common challenge is quickly diagnosing and resolving critical incidents under pressure, which may involve analyzing logs, debugging code, and coordinating with development, QA, and infrastructure teams. Staying current with evolving application architectures and technologies is also essential. Effective management of these challenges involves strong communication skills, proactive learning, and adopting structured incident management processes.

What cities are hiring for Application Support Engineer L3 jobs?

Cities with the most Application Support Engineer L3 job openings:

What states have the most Application Support Engineer L3 jobs?

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

What are popular job titles related to Application Support Engineer L3 jobs?

For Application Support Engineer L3 jobs, the most frequently searched job titles are:

Infographic showing various Application Support Engineer L3 job openings in the United States as of September 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $100,951 per year, or $48.5 per hour.

Senior Application Support Engineer

Newark, CA

Neshent Technologies
11 - 50 employees
Learn more about Neshent Technologiesexternal

Full-time

Posted 17 days ago

Job description

We are seeking a skilled Senior Application Support Engineer to provide L3 application support across production and non-production environments. The role requires strong Java and React.js expertise, along with experience in observability, dashboarding, troubleshooting, and incident triage. The engineer will help maintain application stability, performance, and reliability while collaborating with development and cross-functional teams.

Roles and Responsibilities
  • Provide L3 application support for production and non-production environments.
  • Troubleshoot and resolve issues using Java and React.js expertise.
  • Implement observability practices to monitor application health and performance.
  • Create and maintain dashboards for application metrics and performance monitoring.
  • Triage complex issues and collaborate with development teams on resolution.
  • Perform root cause analysis and recommend preventive actions.
  • Assist with application deployment and configuration across environments.
  • Document troubleshooting procedures, resolutions, and best practices.
  • Mentor and support junior team members.
Mandatory Skills
  • Strong hands-on experience with React.js.
  • Strong knowledge of Java.
  • Experience with observability tools and practices.
  • Experience creating and managing monitoring dashboards.
  • Strong troubleshooting, problem-solving, and incident management skills.
  • Excellent verbal and written communication.
  • Ability to work effectively in a collaborative team environment.
Preferred Skills
  • Experience with cloud platforms.
  • Knowledge of CI/CD and DevOps practices.
  • Experience with SQL and database management.
  • Understanding of Agile methodologies.
  • Experience with application performance tuning and optimization.

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