AI Agent Integration
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