> Markdown version of [/jobs/ext/4346118-advanced-application-specialist](https://www.wearedevelopers.com/jobs/ext/4346118-advanced-application-specialist). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Advanced Application Specialist - **Company:** Wintrust Financial - **Location:** Rosemont, IL, United States - **Experience:** Expert - **Salary:** $85,000.0 - $110,000.0 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Software Bug Management, Configuration Management, Information Systems, Salesforce.Com, System Testing, Microservices - **Published:** October 8, 2026 - **Apply:** https://www.jofdav.com/jobs/60056357-advanced-application-specialist ## About the Role * 3-5 years of lending experience in a business an/or IT setting * Complex, analytical problem solving skills, planning and organizational capabilities. * Excellent written and verbal communication skills * Experience with system testing including creation of a test plan and documentation of results * Able to consistently work with strict deadlines and time pressure while maintaining excellent attitude and positive demeanor ## Description The Advanced Loan Application Specialist is a mid-level position and serves as a subject matter contributor across the business domains they support. They are accountable for ensuring the day to day operations of the systems under their charge and for supporting and implementing change and configuration management, including testing and defect management relating to new product implementations, development releases, upgrades, patches, and other system maintenance as required. Advanced Application Specialists will work closely with Business resources and stakeholders, internal Technology teams, and various vendors and third-party consultants and implementers. They must understand their application's function within the application itself alongside interdependencies with other applications and infrastructure both internally and outside the corporate network. Must have and demonstrate critical thinking skills. Ongoing knowledge of current and changing business and technological environments, trends and strategy is important to success. This position will also support acquisition and conversion activities related to their business domains. What You'll Do * Provide primary support the core banking systems FIS (Fidelity Information Systems) IBS (Integrated Banking System) and ACBS (Advanced Commercial Banking System). * Assist with troubleshooting issues encountered with Application Programming Interfaces (API) and micro services technologies * Support complex acquisition and conversion teams to ensure acquired entities data and/or systems are accurately migrated over to the new environments * Provide secondary support for other Lending Solutions including but not limited to Laser Pro, CRA Wiz, Factor Soft, Moody's Credit Lens, International Services systems such as CIBAR or FX360 Salesforce * Provide Tier 1 application-level support and troubleshooting * Understand the interdependencies of systems and data across their business line to identify and analyze impacts as applications and systems are integrated, changed/upgraded and retired * Must be willing to provide support 24x7x365