GospelFlow
Co-Founder & Software Engineer
Jun 2024 — Present
Beaumont, CA
- Built and own most of a production SaaS platform end to end: Next.js + Node.js app, PostgreSQL (47 tables via Drizzle ORM), auth, payments, and cloud deployment.
- Designed a realtime conversation system on OpenAI's Realtime API where the model self-assesses mid-conversation through tool calls and rewrites its own instructions to adapt live.
- Orchestrated OpenAI, ElevenLabs, Anthropic, Gemini, and Grok into one system with per-provider error handling and fallbacks.
- Built the full Stripe billing system: subscriptions, proration previews, mid-cycle upgrades/downgrades, one-time purchases, and a webhook handler as the source of truth for entitlements.
- Cut cost and latency by moving realtime sessions to direct WebRTC with ephemeral tokens and adding prompt caching — removing ~$200/month in server and API costs.
- Ran a 200-user pilot, then reshaped the product into a guided, workflow-driven experience; grew to ~600 registered users across multiple countries.
