Application Engineer - Phoenix - CornerStone Technology Talent Services

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    Description

    Application Engineer (Contract)

    Phoenix, AZ (On-site)

    CornerStone 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.

    Role Summary

    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.

    Key Responsibilities


    • Work directly within an existing production application codebase to troubleshoot issues and implement fixes


    • Develop and enhance application features using .NET, Python, and JavaScript


    • 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

    Required Qualifications


    • Strong hands-on experience as an Application Engineer, Software Engineer, or Full-Stack Developer


    • Proficiency with .NET, Python, and JavaScript in production environments


    • 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

    Engagement Details

    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.


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