Hi, I'm Esther Tran

An intelligent, auditable immigration assistant for Canada's Express Entry skilled immigration system. Converts applicant natural language into validated profile schemas, retrieves and classifies NOC 2021 occupation codes with hybrid search, and deterministically computes Comprehensive Ranking System (CRS) points and FSW/CEC/FST eligibility.

• Architected an event-driven LangGraph orchestrator with typed state routing applicant intake through extraction, NOC retrieval, classification, and eligibility evaluation.
• Built a hybrid search pipeline combining BM25 keyword search, pgvector semantic embeddings, Reciprocal Rank Fusion (RRF), and Cohere reranking.
• Benchmarked NOC retrieval pipelines against ground-truth labeled datasets in noc/evaluate.py, evaluating hit rates and NDCG@10 scores.
• Engineered a 100% deterministic, auditable rule engine with Pydantic for CRS points, language conversions (IELTS, CELPIP, PTE, TEF, TCF to CLB), and FSW 67-point grid checks.
• Shipped a responsive Next.js frontend with live interactive CRS simulation and NOC code exploration.

A full-stack productivity web application built around the Pomodoro technique. Delivers structured focus session tracking, short & long break intervals, persistent session history, and enterprise-grade security including JWT authentication, two-factor authentication (TOTP), and Google/GitHub OAuth2.

• Developed a modular NestJS 11 backend with TypeORM, PostgreSQL migrations, and Docker Compose for reproducible local and containerized development.
• Engineered enterprise authentication featuring bcrypt hashing, JWT access tokens, optional Two-Factor Authentication (TOTP authenticator app QR code generation and verification), and Google + GitHub OAuth2 strategies.
• Implemented Pomodoro session lifecycle API (/pomodoro-session/start, /end, /current, /history) managing focus (25m), short breaks (5m), and long breaks (15m).
• Built reactive Next.js 16 frontend with Zustand state store, React Hook Form + Zod client validation, backed by class-validator DTOs on the server.
• Deployed distributed production architecture with frontend hosted on Vercel and containerized backend + PostgreSQL on Railway.

An interactive full-stack graphic design platform inspired by Canva. Features a rich visual canvas workspace for composing multi-element graphics with custom text, geometric shapes, and cloud-stored images, alongside template browsing and instant client-side image rendering export.

• Built an interactive multi-layer visual canvas editor supporting real-time drag-and-drop element positioning, resizing, z-index layering, font customization, and color picking.
• Architected media asset pipeline connecting Express 5 with Cloudinary API for instant image uploads, background asset management, and transformed image delivery.
• Implemented hybrid authentication supporting email/password registration with JWT authentication alongside Google OAuth 2.0 via Passport.js.
• Integrated client-side canvas rasterization via html-to-image allowing users to export and download high-resolution graphic designs directly in PNG/JPEG formats.
• Designed clean MongoDB schemas for Design documents, User profiles, and reusable Design Templates.