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AI Systems & Product Engineering Case Studies | Ava Liu

Portfolio · Selected Systems & Products

All Case Studies

AI systems and agents, full-stack products, revenue infrastructure, design engineering, and creative AI leadership — organized as one connected capability map.

Portfolio Map

The homepage highlights the strongest projects for fast scanning. This page keeps the complete set together so hiring teams can move from systems architecture and AI product work into design engineering, growth infrastructure, and creative leadership.

AI SYSTEMS & AGENTS
NEWSocial Publisher - AI Workflows, Human–AI Interaction & EvaluationProduct strategy and full-stack implementation across goal-driven discovery, publisher memory, content creation, and publishing. Includes human–AI interaction, failure diagnosis, token usage and estimated cost per model call, and OpenAI / Meta API evaluation.GOAL-DRIVEN AI · WORKFLOW AUTOMATION · AI VENDOR EVALUATION↗01RelayOS — Multi-Agent AI Workforce OrchestrationA production agentic AI platform spanning LangGraph orchestration, governed MCP/HITL workflows, PostgreSQL state, Terraform-managed AWS infrastructure, and manually gated GitHub Actions delivery with OIDC.AGENTIC AI · MULTI-AGENT · MCP · AWS · CI/CD · IAC↗02AI Token OptimizationRe-architecting a production AI agent to reduce token cost, latency, and context overhead while preserving output quality.Token Optimization · Context Engineering · Runtime Architecture · Hybrid Retrieval↗04Governed AI Email AgentA bounded support agent that investigates with live tools and governed knowledge while keeping outbound communication human-controlled.AI Agents · RAG · HITL↗05Career AgentA trust-centered career agent combining canonical evidence, semantic evaluation, source lineage, claim verification, people discovery, referral intelligence, outreach tracking, and offer-viability prioritization.Knowledge Engineering · Semantic Evaluation · Provenance↗
AI PRODUCTS & REVENUE SYSTEMS
03AI Financial Data AnalyticsAn end-to-end financial analytics product connecting explainable AI, quantitative research, full-stack engineering, subscriptions, and production interaction design.AI Product Engineering · Explainable AI · Design Engineering↗06Affiliate & Creator Growth SystemAuditable affiliate infrastructure spanning attribution, Stripe revenue events, commission ledgers, reversals, payouts, analytics, risk, and creator performance.Financial Systems · Stripe · Full-Stack↗08AI Pet PortraitA productized generative-AI workflow combining customer input, style direction, automation, and human quality control.AI Product Design · AI Automation · Generative AI↗
DESIGN ENGINEERING & PRODUCT SYSTEMS
07Design Engineering + MotionInteraction engineering that turns design intent into reusable React components, motion systems, and production behavior.Component Engineering · Motion · GSAP↗09Island Dental Design SystemA 0→1 product and brand system spanning responsive components, conversion hierarchy, accessibility, and cross-team adoption.Design Systems · Product Design · Accessibility↗
CREATIVE AI & DESIGN LEADERSHIP
10OnMed Social WorkflowA reusable AI-assisted production workflow that lets teams adapt social creative across formats without losing brand constraints.Generative AI Workflows · Workflow Automation · Design Systems↗11OnMed Brand SystemA governed creative system combining brand standards, reusable templates, generative tools, and human art direction.Creative Direction · Design Systems · Generative AI↗12AI Storytelling AnimationEnd-to-end AI-assisted storytelling where concept, character continuity, pacing, sound, and final editorial decisions remain human-led.Generative AI · Creative Direction · Visual Storytelling↗
Ava Liu · Forward Deployed Engineer · Design + Full-Stack + AI Systems