Senior Full-Stack Developer (React/Node.js) - Base44 & AI Specialist Job Description: We are seeking a high-level Full-Stack Developer to resolve a series of Critical and High Priority bugs within our business management platform, CompanySync. Our application is built and hosted on the Base44 platform. You will be working directly within the Base44 editor to debug React components, Node.js serverless functions, and complex AI integrations. Critical Priorities: Fix AI Voice Interruption (BUG-001): Resolve issues with Gemini Live Voice where interruption and Voice Activity Detection (VAD) are failing. Twilio Inbound/Outbound (BUG-013/014): Fix TwiML handlers for inbound AI voice calls and SMS responses for our virtual assistants. Google Calendar Two-Way Sync (BUG-003): Troubleshoot and resolve domain verification and webhook watch channel issues in the Google Cloud Console. Data Deduplication (BUG-004/005): Fix race conditions creating duplicate company records and backfill missing multi-tenant company_id tags. Required Skills: Base44 Proficiency: Experience working within the Base44 ecosystem is a massive plus. Frontend/Backend: Expert-level React.js and Node.js. AI/Voice Integration: Deep understanding of WebSockets, Twilio Programmable Voice, and Google Gemini API. Third-Party APIs: High proficiency with Google Calendar API (OAuth2 and Webhooks). Project Scope: This is an urgent "Bug Bash" engagement. We have a comprehensive System Audit Report detailing all 15 open issues. We are looking for a developer who can jump into the Base44 environment and start pushing fixes immediately.