Full Stack Developer & AI tester at AI Game-based PM Learning Platform

Built a 4-layer architecture (React/Vite frontend, Express backend, Supabase PostgreSQL, Ollama AI layer) for an AI-driven project-management learning game with role-based personas and automated feedback. Implemented persona-based AI teammate chat and automated task evaluation using a local Ollama LLM, with prompt templates, benchmarking and guardrails to ensure persona consistency and safe outputs. Designed and queried a normalised PostgreSQL schema on Supabase (users, games, scenarios, quizzes, personas, records) with parameterised queries and transaction-safe updates via pg.Pool. Used Dockerised Postgres instances and Jest-based API unit tests to validate REST endpoints end-to-end, plus 90+ acceptance tests and usability studies (SUS, task completion time) on core game flows.

Team Leader & Full Stack Developer at AI Calendar Web App

Designed an AI-powered personal scheduling engine using LLaMA 3.2:8B to generate adaptive plans based on user behaviour patterns. Conducted 420+ user interviews/surveys to produce URS/SRS, workflows, and detailed architecture diagrams. Implemented React UI components (calendar grid, task planner, AI suggestions) and a Node.js backend for task management APIs. Built a local fine-tuning pipeline to personalise scheduling outputs, reducing planning time by 45%. Coordinated weekly Agile ceremonies to track progress, align features, and ensure iterative delivery.

Full Stack Developer & System tester at Virtual Scroll Access System (VSAS)

Developed a secure access-control system using Java + Spring Boot, Django, and SQLite, following modular MVC architecture. Designed RBAC (role-based access control), session management, and REST API endpoints between Spring Boot and Django. Led automated testing using JUnit + Mockito reaching 90%+ statement & branch coverage. Established a structured CI/CD pipeline via GitHub, and managed sprint tasks and acceptance criteria in Jira, enabling rapid delivery and agile collaboration within a 4-member team. Awarded Final Score: 93.53% (top 3% in class).

Team Leader & Full Stack Developer at Chat Room Web App

Built a secure messaging system using Flask backend + JavaScript frontend, structured over three Agile sprints. Implemented strong security measures, including SHA-256 password hashing with salt, JWT-based authentication, AES-GCM encryption, and HTTPS with SSL/TLS to prevent attacks. Enhanced usability with real-time features, such as a dynamic friend request system, multi-user chatrooms, persistent message history, and role-based access control, ensuring accessibility via POUR principles. Conducted testing and deployment, including PA CT analysis, card sorting for navigation, and low-fidelity prototypes with prioritized features from guerrilla testing.

Led the development of a 4-layer AI-driven project-management learning game. Built a React/Vite frontend, Express backend, Supabase PostgreSQL, and an Ollama local LLM layer to power AI-driven tasks and automated feedback. Implemented persona-based AI teammate chat and automated task evaluation using prompt templates, benchmarking, and guardrails to ensure persona consistency and safe outputs. Designed and queried a normalized PostgreSQL schema (users, games, scenarios, quizzes, personas, records) with parameterized queries and transaction-safe updates via pg.Pool. Containerized services with Dockerised Postgres and wrote Jest-based API unit tests to validate REST endpoints end-to-end. Executed 90+ acceptance tests and usability studies (SUS, task completion time) on core game flows. Followed Agile practices with iterative delivery and cross-functional collaboration, ensuring robust data integrity and secure, scalable architecture.

Designed an AI-powered personal scheduling engine using LLaMA 3.2:8B to generate adaptive plans based on user behaviour. Conducted 420+ user interviews/surveys to produce URS/SRS, workflows, and detailed architecture diagrams. Implemented React UI calendar components and a Node.js backend for task-management APIs. Built a local fine-tuning pipeline to personalise scheduling outputs, reducing planning time by 45%. Coordinated weekly Agile ceremonies to track progress and ensure iterative delivery. Delivered a functional prototype with end-to-end features and a scalable architecture, enabling rapid experimentation with AI-generated suggestions.

Developed a secure access-control system using Java + Spring Boot, Django, and SQLite, following a modular MVC architecture. Designed RBAC, session management, and REST API endpoints bridging Spring Boot and Django. Led automated testing with JUnit + Mockito achieving 90%+ statement/branch coverage. Established CI/CD pipeline via GitHub Actions, and managed sprint tasks and acceptance criteria in Jira, enabling rapid delivery within a 4-member team. Delivered a robust, auditable system with strong authentication and authorization controls.