Java L3 Application Support Engineer C2C jobs at Mount Laurel, NJ

Tech Mirrors; Mount Laurel Township (NJ); On-site; USD 100,000 - 130,000; Full time

Job summary

Tech Mirrors is seeking a Java L3 Application Support Engineer based in Mount Laurel, NJ. The role involves providing advanced production support for critical applications using Java, Spring Boot, and Angular, focusing on deep technical troubleshooting and root cause analysis.

Qualified candidates should have a minimum of 10 years experience in application support and be able to debug application issues efficiently. The position includes participating in rotational shifts for 24/7 support coverage and improving system performance and stability.

Qualifications

• 10 years of relevant application support development experience.
• Ability to perform deep technical troubleshooting.
• Experience with debugging APIs, microservices, backend logic, and front-end components.

Responsibilities

• Provide L3 production support for enterprise applications.
• Perform in-depth root cause analysis for incidents.
• Implement bug fixes and patches in coordination with development teams.
• Participate in on-call rotational shifts for support coverage.
• Maintain and improve support documentation and runbooks.

Skills

Java

Spring Boot

Angular

Root cause analysis

Debugging

Job description

Role: Java L3 Application Support Engineer

Location: Mount Laurel, NJ (Onsite)

Duration: 12 Months

LOCAL to Mount Laurel, New Jersey ONLY!

Technology Stack: Java| Spring Boot| Angular.

Experience 10 years (relevant application support development experience) Shift Yes may require rotational shifts

Job Summary

The L3 Application Support Engineer will provide advanced production support for business critical applications built using Java| Spring Boot| and Angular. This role focuses on deep technical troubleshooting| root cause analysis| and permanent fix implementation working closely with development| infrastructure| and DevOps teams to ensure high availability and performance of applications.

Key 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 24×7 support coverage.
• Maintain and improve support documentation| runbooks| and SOPs.
• Proactively identify stability| performance| and security improvements.