Senior Web Application Debugging and Backend Integration Specialist

We are looking for an experienced Full Stack Developer or Web Application Debugging Specialist to investigate and resolve a complex functionality issue in an existing online business application. The application has a user profile with specific registered business activities and associated permissions. However, certain system features and options are not becoming available automatically despite the required profile information being correctly configured. We need a highly skilled technical professional who can investigate the underlying application logic, identify the root cause, and provide a reliable technical solution or detailed diagnostic report. Required Technical Expertise - Advanced JavaScript and browser developer tools. - Frontend and backend application debugging. - API integration and troubleshooting. - Database structure, queries, and data mapping. - User role, permission, and feature activation logic. - Application configuration and system-level troubleshooting. - Network request and response analysis. - Error detection, debugging, and root cause analysis. - Experience with complex enterprise web applications. Scope of Work 1. Conduct a technical assessment of the existing application functionality. 2. Investigate why certain features remain disabled despite correct user profile configuration. 3. Analyze frontend behavior and backend communication. 4. Examine API responses, application logs, and database mapping where authorized access is available. 5. Identify possible configuration, validation, or permission-related issues. 6. Prepare a technical report explaining the root cause. 7. Recommend an authorized and technically reliable resolution. Ideal Candidate We prefer professionals with experience in complex web applications, enterprise software, financial platforms, ERP systems, and backend troubleshooting. Candidates must demonstrate strong analytical and debugging skills rather than simply providing general website maintenance services. Important Requirements - Proven experience in Full Stack Development. - Strong knowledge of JavaScript, APIs, and backend systems. - Ability to investigate complex application behavior. - Professional communication and confidentiality. - No unauthorized access, security bypasses, or modification of third-party systems. To Apply Please explain your relevant experience and describe how you would approach diagnosing a feature that remains disabled despite correct user profile configuration. We are interested in hiring a technically capable professional for this specialized assignment, with potential for further collaboration.