Case study
Full-Stack NebulaHireReady
AI-powered interview prep SaaS with real-time voice interviews (OpenAI Realtime API), FSRS-5 spaced repetition scheduling, 1,300+ question bank, and company-specific prep tracks for Amazon, Google, Meta, Microsoft, Apple, Netflix, Stripe, and Uber. Gamification, performance analytics, and Stripe subscriptions (monthly, annual, and lifetime tiers).
End-to-end solutions from database to deployment
- Role
- Creator
- Year
- 2026
- Status
- Live
- Stack
- Next.js 15, Supabase, OpenAI Realtime, Stripe, Voice AI, FSRS-5
Interactive Voice AI Sandbox
Realtime Interview & Spaced Repetition
“How do you ensure idempotency across distributed webhook event processing pipelines?”
Story · how this shipped
The brief
Building a production SaaS with real-time AI voice interviews and scientifically-optimised spaced repetition while preventing financial losses from unlimited usage.
The build
OpenAI Realtime API for natural voice interviews with post-session analysis. FSRS-5 algorithm (same as Anki) drives review scheduling. 1,300+ questions across company-specific tracks. Usage limits per plan prevent cost overruns. Stripe handles monthly, annual, and lifetime billing.
What shipped
Live production SaaS. Voice interviews available 24/7 without scheduling. Company-specific prep covers FAANG + Stripe + Uber. FSRS-5 delivers science-backed review scheduling.
Engine room
At a glance
Inventory
Stack & signals
Let's talk
Tell me what you're building
If you need someone who can own UI, systems, and AI integration without losing the plot, I'm listening. Contract, advisory, or full-time: we'll find the right shape.