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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.

L3 Application Support Engineer

Mount Laurel, NJ • On-site

ClifyX
Recruiting and Staffing Services • 51 - 200 employees
Learn more about ClifyXexternal

Full-time

Re-posted 13 days ago

Job description

Job Summary:
ClifyX is seeking an L3 Application Support Engineer to provide advanced production support for business critical applications. The role involves deep technical troubleshooting and root cause analysis, collaborating with development and infrastructure teams to ensure application performance and availability.
Responsibilities:
• Provide L3 production support for enterprise applications developed using Java, Spring Boot, and Angular.
• Perform in-depth root cause analysis (RCA) for recurring and complex incidents.
• Debug application issues related to APIs, microservices, backend logic, and frontend components.
• Analyze logs, stack traces, database issues, and performance bottlenecks.
• Implement bug fixes, patches, and minor enhancements in coordination with development teams.
• Support production deployments, releases, hotfixes, and post-release validations.
• Work with L2 support teams to guide issue triage and resolution.
• Ensure adherence to SLAs, incident management, and change management processes.
• Participate in on-call / rotational shifts as part of 24x7 support coverage.
• Maintain and improve support documentation, runbooks, and SOPs.
• Proactively identify stability, performance, and security improvements.
Qualifications:
Required:
• Experience: 6–10 years (relevant application support & development experience)
• Technology Stack: Java, Spring Boot, Angular
• Provide L3 production support for enterprise applications developed using Java, Spring Boot, and Angular.
• Perform in-depth root cause analysis (RCA) for recurring and complex incidents.
• Debug application issues related to APIs, microservices, backend logic, and frontend components.
• Analyze logs, stack traces, database issues, and performance bottlenecks.
• Implement bug fixes, patches, and minor enhancements in coordination with development teams.
• Support production deployments, releases, hotfixes, and post-release validations.
• Work with L2 support teams to guide issue triage and resolution.
• Ensure adherence to SLAs, incident management, and change management processes.
• Participate in on-call / rotational shifts as part of 24x7 support coverage.
• Maintain and improve support documentation, runbooks, and SOPs.
• Proactively identify stability, performance, and security improvements.
Company:
ClifyX provides innovative business solutions which satisfy requirements for mission-critical reliability, scalability, interoperations. Founded in 1998, the company is headquartered in South Plainfield, USA, with a team of 501-1000 employees. The company is currently Late Stage.
ClifyX logo

About ClifyX

Sourced by ZipRecruiter

ClifyX is a well-established player in the IT Services sector that specializes in providing result-oriented technological solutions to a wide range of industrial verticals. Based in South Plainfield, New Jersey, ClifyX offers a comprehensive selection of IT services that include project staffing, application development, professional consulting, and other IT-based solutions. While the company's website, clifyx.com, does not divulge the exact founding date, it is clear that ClifyX has grown into a renowned name within their domain, thanks to their unwavering commitment to innovative practices. The company's mission statement revolves around harnessing the power of technology to assist their clientele in steering their respective businesses towards success.

Industry

Recruiting and staffing services

Company size

51 - 200 Employees

Headquarters location

South Plainfield, NJ, US

Year founded

1998

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