Senior Developer — Codebase Audit & Ongoing Maintenance

We're looking for a senior developer to take ownership of SIRDOZ, an AI-powered email threat detection SaaS with a Chrome extension and Outlook add-in. The app runs well in production but was built largely through AI-assisted development, and we need an experienced developer to properly understand, document, and maintain it going forward. Stack: Node/Express backend on Railway, PostgreSQL via Neon, OpenAI API integration, Stripe billing, Chrome extension (Manifest V3), Outlook add-in (Office.js/Microsoft Graph). We are looking to bring someone in on a phased approach - Phase 1: a paid code audit — full review of architecture, code quality, and security gaps, with a written report. Phase 2 (if the audit goes well): ongoing part-time work — bug fixes, server management, and performance/scaling as usage grows. Experience picking up and maintaining AI-generated codebases you didn't write is a strong plus. Potential for a long term, part-time position if all goes well.