Ryan Ngo

Phuong Ngo Duy -linkedin.com/in/phuong-ngo-duy Full-Stack Engineer · 5+ years · React / Next.js / NestJS / Node.js / AWS Ho Chi Minh City, Vietnam SELECTED PROJECTS AI Analytics Platform — Recruitment Marketing Intelligence UK-based HR Tech SaaS Company (NDA) · Production SaaS · React SPA embedded in enterprise Rails platform · Nov 2023 – Present A React single-page application giving recruiters real-time visibility into how each marketing channel (job boards, paid ads, social) converts job-seekers into applicants. An AI engine generates actionable budget recommendations and runs what-if simulations — reducing wasted ad spend and surfacing optimisation opportunities automatically. 30 days ~3 min 12 hrs 20+ Rolling window tracked AI async poll timeout Insight cache TTL Min data gate (apps) What I built AI Features • AI Insights engine: async POST → poll pattern; categorises channels as positive/negative; produces template-driven budget recommendations • KPI dashboard: CVR, CPA, total spend, page views per channel • Sortable, colour-coded channel performance table • Budget Simulation: sends AI recommendations + channel data → returns projected visits, applications, CPA, and annual revenue forecast • Marketing Spend modal — React Hook Form + Zod validation • Shadow DOM isolation — zero CSS bleed from host platform • Post-and-poll utility: polls every 10 s, up to 18 attempts, with graceful timeout and error handling • Dual auth modes: cookie (standalone) + Bearer token (MFE) • Data sufficiency gate: AI calls only fire when sufficient data exists — prevents noisy outputs from sparse channels • Upsell page: blurred demo dashboard + Contact Sales CTA • AI Chat service: lower-level chat() + generateInsights() helper for direct LLM message exchange with the backend React 19 TypeScript TanStack Query Tailwind CSS v4 Radix UI Zod Vitest Azure CI/CD Ruby on Rails (API) ✓ Production-deployed · Embedded in commercial UK SaaS platform · Live with paying customers Document Management Platform Freelance Contract · Remote Client · Mar 2025 – Present Full-stack development of a document management and cabinet organisation tool for a remote client. Built the React frontend, Node.js/PostgreSQL backend, and managed AWS infrastructure and deployment. React Node.js PostgreSQL AWS REST API TypeScript Internal Web Platforms — Global Mobile Game Studio Frontend Engineer · Gameloft Vietnam · Sep 2021 – Nov 2023 Built and maintained internal web tooling for one of the world's largest mobile game studios (~10,000 employees). Delivered performant, responsive UIs using Next.js and Tailwind CSS at scale across multiple internal products. React Next.js Tailwind CSS TypeScript GraphQL CERTIFICATIONS & EDUCATION AWS Certified Cloud Practitioner Amazon Web Services Aug 2024 Higher Diploma in Software Engineering (Distinction) FPT Aptech 2018 – 2020 CEFR B1 English Certificate — Apr 2025 Full project details and code samples available on request ·-· linkedin.com/in/phuong-ngo-duy