L3 Application Support Engineer

Request ID: 65108-1 Title: L3 Application Support Engineer Locations: Dallas TX/New York, NY Duration: 6 Months Salary Range: $50- $52/Hour on W2 (All inclusive) Job Description: Looking for experienced L3 Application Support Engineers to support a legacy treasury application within a global investment banking environment. The platform supports core treasury operations including liquidity management and internal financial processing, and is built using C++ running on a Unix/Solaris-based infrastructure. The role will focus on deep production support, troubleshooting, code-level debugging, and system stability for a mission-critical treasury system. Key Responsibilities L3 Production Support • Provide L3 support for a legacy treasury application built in C++ on Unix/Solaris infrastructure • Investigate and resolve complex production incidents affecting treasury operations • Perform root cause analysis (RCA) for system defects and operational failures Code-Level Troubleshooting • Analyze and debug C++ application code to diagnose system issues • Implement bug fixes, patches, and minor enhancements where required • Support application releases and production deployments System Stability & Performance • Ensure stability and availability of the treasury platform • Monitor application performance, system logs, and operational metrics • Support incident management, problem management, and operational governance processes Knowledge Transfer & Transition • Work with existing support teams to transition knowledge and support responsibilities • Develop and maintain technical documentation and runbooks • Assist with stabilization and long-term support of the platform Required Technical Skills • Strong hands-on experience in C++ application development/support • Experience supporting applications running on Unix / Solaris environments • Proven experience in L3 production support for enterprise applications • Strong debugging and troubleshooting skills in legacy systems • Familiarity with shell scripting and log analysis Good to Have •Experience working with treasury or financial systems within banking environments • Exposure to liquidity management or internal banking platforms • Familiarity with backend data stores or databases in enterprise applications Experience • 9–12 years of experience in application development/support with strong C++ expertise • Prior experience supporting mission-critical financial systems preferred Key Traits • Strong analytical and troubleshooting capability • Comfortable working with large legacy codebases • Ability to support high-availability banking systems Appreciate your quick response and please feel free to reach me out for any query you may have. Thanks