Ciki Zeng
Portfolio

Projects

Every project here was built by one person with AI partnership. No team. No outsourcing. Each one solves a real problem for real users.

JumpOnionVisit →

AI Figure Skating Jump Analysis

The Problem

Figure skating coaches and parents spend hours reviewing competition videos frame by frame to analyze jump technique — and still miss critical details.

Why It Matters

Upload a video, get AI-powered biomechanical analysis: takeoff angle, rotation count, landing stability, and personalized training plans. What takes a human 30 minutes takes JumpOnion 60 seconds.

Live — V1.3+, 931 tests passing

Next.jsRenderVercelR2ModalSupabaseStripeLLM
SmartLearningVisit →

AI Adaptive Learning Platform

The Problem

Generic study apps don't adapt to how each child actually learns. Kids waste time on things they already know and don't get enough help where they struggle.

Why It Matters

A three-layer anti-hallucination system with Bayesian Knowledge Tracing adapts in real-time. MAP-calibrated assessments track true progress, and a Portfolio builder prepares kids for school applications.

V2.8 Beta — live

Next.jsSupabaseStripeOpenAI
SmartQuoteProInternal toolVisit →

AI-Powered Facility Maintenance Quoting

The Problem

Generating accurate maintenance and construction quotes for enterprise retail chains involves dozens of variables — materials, labor rates, regional pricing, service type. Manual quoting is slow and error-prone.

Why It Matters

Built for my company SunnyUnite to serve enterprise clients like UNIQLO. An AI-trained pricing engine generates competitive, accurate quotes in minutes instead of hours. The training methodology is proprietary — and the system has been in production use since v10.

Internal tool — public registration is closed. Showcased here as proof of design capability in enterprise AI applications.

Production v10 — enterprise client in use

Custom AIProprietary Training

Also: SunnyInvoices

Plus SunnyInvoices — a three-layer automation script (Tampermonkey + Node.js + Playwright) that turns a 5x manual process into one click. Not a product, just a testament to solving real problems with code.