Darren
Wong

Catalogue, borrowing and returns, reservations, fines, and role-based access for members, librarians and administrators. Built as a six-person team project, then substantially reworked afterwards: JWT authentication, Flyway-managed schema migrations, and an integration suite that runs against a real PostgreSQL container rather than an in-memory stand-in.

Six deep-learning architectures — three detectors and three classifiers — trained and evaluated head-to-head on the Kaggle crop pest dataset, with an end-to-end pipeline covering YOLO-to-COCO conversion, early stopping, explainability visualisations, and a deliberately imbalanced split to test robustness. Completed on exchange at UNSW Sydney.

Multi-agent LLM stock market simulation · private repository

Autonomous trading agents with portfolio state management — stocks, cash and debt tracking, loan repayment with interest, and bankruptcy detection — trading against an order-matching engine with buy and sell queues and session-based price updates. Four LLM providers sit behind one interface, with format validation, retry handling, and per-agent chat history that carries trading context across simulated days.

A Q-learning agent wrapped in a learned safety shield that vets each proposed action before it reaches the environment, so unsafe moves are filtered at runtime rather than merely penalised after the fact.

What it does, who it is for, and the one genuinely hard part.

AI Engineer Intern

CarryAI Company Limited, Hong Kong

• Built a full-stack web application that guides users through a multi-turn conversation to generate optimised system and user prompts for vision-language models, with REST endpoints backed by a factory-pattern LLM client abstraction, exponential-backoff retries, and JSON extraction with fallback parsing.
• Integrated OpenRouter’s Qwen reasoning model with native thinking-token support so the application surfaces the model’s internal reasoning in real time, and built a dual-compression image pipeline — base64 multimodal encoding, MIME detection, presigned URL delivery — that cut payload sizes without visible quality loss.

Software Engineer Intern

Total Rehabilitation Management (TRM HK), Hong Kong

• Engineered a workflow analytics dashboard with data aggregation, multi-criteria filtering and interactive visualisation, letting stakeholders monitor, track and export K2 process metrics across both active and completed cases.
• Architected a document intelligence pipeline using TF-IDF vectorisation that reached 95% classification accuracy on unstructured document types — incident reports, medical certificates, receipts.
• Cut regulatory-report image payloads by up to 89% with lossless compression, keeping within third-party platform constraints, and hardened public endpoints with reCAPTCHA verification.

COMP & CPEG Mentor

HKUST Department of Computer Science and Engineering

• Advise first- and second-year computer science students on study planning, academic strategy and co-curricular involvement.

Peer Companion

HKUST Counselling and Wellness Centre

• Facilitate small-group activities supporting social skills and peer relationships, and organise university-wide wellness events.