Senior Application Support Engineer

Senior Application Support Engineer

Location: Greater Phoenix Area (Hybrid) Employment Type: Full-Time

Join a growing enterprise SaaS organization. CornerStone Technology Talent Services is conducting a confidential search for an experienced Senior Application Support Engineer to join a rapidly growing software company that delivers mission-critical enterprise applications used by organizations across North America. This is an opportunity for someone who enjoys solving complex technical challenges, working directly with customers, and partnering with Product and Engineering to improve enterprise software.

This is not a desktop support, help desk, or internal IT position. Instead, you'll become the technical expert responsible for investigating complex application issues, identifying root causes, and helping drive long-term product improvements. If you enjoy analyzing SQL data, reviewing application logs, tracing API calls, and solving the problems others can't, we'd like to speak with you.

What You'll Do

• Own complex customer issues from investigation through resolution
• Troubleshoot enterprise SaaS applications involving business workflows, security, user permissions, integrations, reporting, and configuration
• Analyze production data using SQL to validate assumptions and identify root causes
• Review application logs, API responses, browser developer tools, and system diagnostics
• Reproduce software issues and determine whether they stem from configuration, integrations, data, user workflow, or application defects
• Collaborate with Product Management, Engineering, QA, Customer Success, and DevOps teams to resolve technical issues
• Create clear technical documentation, troubleshooting guides, and knowledge base articles
• Identify recurring issues and recommend improvements to products, processes, documentation, and support workflows
• Mentor teammates by sharing technical knowledge and best practices

Required Qualifications

• 4+ years of experience supporting enterprise SaaS or commercial software applications
• Experience in Tier 2, Tier 3, Product Support, Technical Support Engineering, Application Support, or Production Support
• Strong SQL skills with experience investigating production data
• Experience troubleshooting enterprise software involving: Configuration, User permissions, Business workflows, Integrations, Reporting, Data validation
• Ability to analyze application logs, browser network activity, API responses, and error messages
• Excellent written and verbal communication skills
• Experience working directly with customers while partnering with software engineering teams to resolve complex issues

Preferred Technical Experience

• Experience with several of the following technologies is highly desirable: REST APIs, Postman, Swagger/OpenAPI, Browser Developer Tools, Log analysis platforms, PowerShell, Python, JavaScript, Power BI, SQL Server Reporting Services (SSRS), Windows Server, Cloud-hosted enterprise applications, Hybrid SaaS environments

The ideal candidate enjoys solving difficult technical problems and takes ownership from beginning to end. You're naturally curious, methodical in your troubleshooting approach, and able to explain complex technical concepts clearly to both customers and internal teams. You leverage modern AI-powered tools to improve research, documentation, troubleshooting, communication, and productivity, while applying sound technical judgment to every investigation. If you're known as the person teammates rely on for the most challenging application issues, this could be an excellent opportunity.

Work Authorization: Direct applicants only. No C2C, third-party recruiters, staffing vendors, or employer-of-record (EOR) arrangements. Candidates must be authorized to work in the United States without current or future sponsorship.

Why Partner with CornerStone Technology Talent Services? For more than 30 years, CornerStone Technology Talent Services has connected technology professionals with outstanding career opportunities across software development, cloud, infrastructure, cybersecurity, data, AI, ERP, and enterprise technology. As a five-time Best of Staffing award winner, we are committed to providing a transparent recruiting experience, meaningful career opportunities, and long-term relationships with both our clients and candidates.