Application Engineer

Corner Stone Technology Talent Services is partnering with a public-sector organization on an opportunity for a hands-on Application Engineer to support and enhance an existing, mission-critical production application. This role will work directly within an established codebase and collaborate closely with internal technical and business stakeholders to support day‑to‑day application needs.

This is a practical, development-focused role suited for someone who enjoys working hands‑on in production systems, troubleshooting issues, and implementing incremental improvements rather than designing greenfield solutions.

The Application Engineer will serve as a hands‑on technical resource responsible for maintaining, supporting, and enhancing an existing production application. The focus of this role is on full‑stack development, application stability, and responsive support, working directly in the code to resolve issues, implement fixes, and deliver targeted enhancements.

This is not a solution architect role. Success in this position depends on strong development fundamentals, comfort working within an established application environment, and the ability to collaborate effectively with internal teams.

• Work directly within an existing production application codebase to troubleshoot issues and implement fixes
• Write and maintain SQL queries and support relational database interactions
• Support day‑to‑day application operations and respond to issues as they arise
• Collaborate with internal stakeholders to understand requirements and deliver practical solutions
• Document changes, fixes, and enhancements clearly and accurately
• Follow established development standards, processes, and deployment practices

• Strong hands‑on experience as an Application Engineer, Software Engineer, or Full‑Stack Developer
• Solid experience working with SQL and relational databases
• Proven ability to troubleshoot, debug, and support live applications
• Comfort working within an existing codebase rather than building new solutions from scratch
• Strong communication skills and ability to collaborate within established teams

Pay Rate:
Targeting market‑aligned contract rates

Contract Duration:
Contract engagement with potential for extension

Location:

Downtown Phoenix, AZ

Work Model: 100% on‑site

Start Timing:
Targeting early 2026

Interview Process:
Structured interview process consistent with prior engagements

This role offers the opportunity to work in a stable public‑sector environment, support a critical application, and contribute immediate value through hands‑on development and support.