Ethan Wang

Web Developer at OPTIMA

Led design and development of an interactive Instance Space Analysis (ISA) visualization platform as part of the OPTIMA research initiative. Enabled researchers to visualize and explore algorithm performance across a 7-stage ML pipeline, applying PCA for dimensionality reduction, threshold filtering, and clustering to 500+ instances to generate trust-aware insights. Built interactive tools with Streamlit, Matplotlib, and NumPy, reducing manual analysis time by ~40% and cutting model insight turnaround from 10 minutes to under 30 seconds. Established a rollback-safe execution model and documented reusable inter-stage APIs to support future algorithm families and datasets.

Web Developer Intern at WEHI

Provided technical support, troubleshooting, and identity management solutions for the REDMANE data registry project, ensuring secure access control and authentication for research institutions. Implemented Keycloak SSO with OAuth 2.0 and OpenID Connect across multiple identity providers (AAF and Auth0) in Unix-based Nectar VM environments using Docker, reducing deployment time by 80%..

Full Stack Developer at BeeQuant AI

Developed and optimized a crypto trading platform with a strong focus on responsive front-end performance, cross-browser compatibility, and a component-based UI. Refactored sign-in page with React, Node.js, TypeScript, and NestJS for improved validation and UI consistency. Implemented user time zone updates, migrated dashboards to Next.js with Tailwind CSS for responsive layout, and introduced animated loading indicators. Led build optimizations, achieving ~30% faster deployments and implemented 92% unit test coverage to reduce post-release bugs by ~40%.

Application Developer at University of Melbourne

Developed an Android calorie-tracking app with real-time fitness monitoring, integrating accelerometer sensors and Google Maps API for step tracking and calorie calculation. Implemented secure Firebase Authentication and designed responsive login/signup/profile screens using XML layouts. Diagnosed sensor discrepancies to improve algorithm consistency across devices.

Application Developer at University of Melbourne

Product Owner for a game focused on Emotional Granularity in children with autism. Managed a 40+ item backlog in Jira, conducted bi-weekly client demos, and integrated 80% of feedback into iterations to enhance usability and engagement. Contributed to frontend development using React Native and JavaScript for game features supporting emotional learning.

Hackathon Participant / Winner at NextGen AI 2025 Hackathon / MBSPro Challenge

AI-assisted billing platform that converts clinical notes into compliant MBS item suggestions, rule checks, and FHIR-ready claim documents. Built backend services with NestJS and Supabase, designed an end-to-end Retrieval-Augmented Generation (RAG) pipeline using LangChain, integrated GPT-4o for query refinement, and employed Gemini and Mistral embeddings with Pinecone for semantic retrieval. Implemented a rule engine for Medicare constraints and a confidence scoring mechanism to reduce hallucinations, with an agentic AI loop for iterative refinement.

Web Developer at Optima

Led design and development of an interactive ISA visualization platform enabling researchers to explore algorithm performance across a 7-stage ML pipeline. Acted as Product Owner, aligning technical goals with the industrial partner through 10+ stakeholder meetings, accelerating requirement consensus by one sprint. Applied ML techniques such as PCA, threshold filtering, and clustering to 500+ instances to generate trust-aware insights into algorithm generalisation and safety-critical failure zones. Built interactive tools with Streamlit, Matplotlib, NumPy, reducing manual analysis time by ~40% and cutting model insight turnaround from 10 minutes to under 30 seconds. Designed a rollback-safe execution model and documented reusable inter-stage APIs for future extensibility.

Web Developer Intern at WEHI

Provided technical support and identity management solutions for secure access to the REDMANE data registry. Integrated Keycloak SSO using OAuth 2.0 and OpenID Connect (OIDC), configured realms/clients and multiple identity providers (AAF, Auth0), and deployed Keycloak in Nectar VM environments using Docker, reducing deployment time significantly. Developed secure API endpoints with FastAPI and JWT validation, ensuring scalable authentication workflows and compliant identity management.

Full Stack Developer at BeeQuant AI

Developed and optimized a crypto trading platform with a focus on responsive frontend performance, cross-browser compatibility, and component-based UI design. Refactored sign-in page with React, Node.js, TypeScript, and NestJS; implemented time zone management, migrated dashboards to Next.js with Tailwind CSS; added animated loading indicators and a dark/light theme toggle. Improved build performance (30% faster deployments) and achieved 92% unit-test coverage with TypeScript/Jest, reducing post-release bugs.

Hackathon — Winner at NextGen AI 2025 Hackathon / MBSPro Challenge

AI-assisted billing platform converting clinical notes into MBS item recommendations with rules and FHIR-ready documents. Built backend with NestJS and Supabase/Postgres, designed an end-to-end Retrieval-Augmented Generation (RAG) pipeline using LangChain, and integrated GPT-4o for query refinement and explanation. Implemented a multi-stage retrieval (lexical/synonym expansion, vector retrieval with Pinecone, reranking with Cohere) to narrow candidates from 150 to top 15. Added rule engine for Medicare constraints, confidence scoring, and an agentic AI loop to ensure alignment with patient context and iterative RAG refinement. Automated FHIR JSON payload generation with HAPI-FHIR stubs.

Application Developer at University of Melbourne

Android calorie-tracking app with real-time fitness monitoring, integrating accelerometer sensors and Google Maps for step tracking. Implemented secure Firebase Authentication and responsive login/signup/profile screens using XML layouts. Diagnosed sensor discrepancies, improving algorithm consistency and reducing false positives by 30%.

Application Developer at University of Melbourne

Developed a game to enhance emotional granularity in children with autism. Acted as Product Owner in an Agile team managing a backlog of 40+ user stories, conducted bi-weekly client demos, and integrated 80% of feedback. Contributed to frontend development using React Native and JavaScript for game features supporting emotional learning.

Web Developer at Optima

Led the design and development of an interactive Instance Space Analysis (ISA) visualization platform as part of the OPTIMA initiative. Built tools to visualize algorithm performance across a 7-stage ML pipeline, enabling researchers to preprocess data, extract features, reduce dimensions, select models, and evaluate results. Served as Product Owner through 10+ stakeholder meetings, aligning technical goals with industrial partners and accelerating requirement consensus by one sprint. Applied PCA, thresholding, and clustering to 500+ instances to produce trust-aware insights about generalization and failure zones. Implemented interactive tools with Streamlit, Matplotlib, and NumPy, reducing manual analysis time by ~40% and cutting turnaround from 10 minutes to under 30 seconds. Documented reusable APIs for extensibility.

Web Developer Intern at WEHI

Provided technical support and identity management solutions for the REDMANE (Data Registry) project, ensuring secure access control and authentication for research institutions. Integrated Keycloak SSO using OAuth 2.0 and OpenID Connect with multiple identity providers (AAF, Auth0). Deployed Keycloak in Nectar VM environments using Docker, resolving authentication and integration issues and reducing deployment time by 80%. Developed secure API endpoints with FastAPI, implementing JWT token validation and RS256 signature verification via Keycloak. Authored comprehensive technical documentation and contributed to workflow improvements adopted by AAF.

Full Stack Developer at BeeQuant AI

Developed and optimized a crypto trading platform with a focus on responsive front-end performance and cross-browser compatibility. Refactored the Sign-in Page using React, Node.js, TypeScript, and NestJS for improved login validation and UI consistency. Implemented a user time zone feature with React, GraphQL, and PostgreSQL. Migrated legacy charts to Next.js and Tailwind CSS, building a fully responsive UI. Implemented theming and loading indicators and achieved a faster production pipeline. Attained 92% unit test coverage with Jest, reducing post-release bugs by 40%.

Application Developer at University of Melbourne

Developed an Android calorie-tracking app with real-time fitness monitoring, integrating multiple sensors and Google Maps API for step tracking and calorie calculation. Implemented secure Firebase Authentication and XML-based UI design. Diagnosed and resolved sensor discrepancies, improving algorithm consistency and reducing false positives by 30% across devices.

Application Developer at University of Melbourne

Developed a game to enhance emotional granularity in children with autism. Acted as Product Owner in an Agile team managing 40+ user stories, conducted bi-weekly client demos, and integrated 80% of feedback. Contributed to front-end development using React Native and JavaScript for game features supporting emotional learning.

Web Developer at OPTIMA

Led design and development of an interactive Instance Space Analysis (ISA) visualization platform to explore algorithm performance across a 7-stage ML pipeline; acted as Product Owner in 10+ stakeholder meetings; applied PCA and clustering to 500+ instances to generate trust-aware insights; built interactive tools with Streamlit, Matplotlib, NumPy, reducing manual analysis time by ~40% and cutting model insight turnaround to under 30 seconds.

Web Developer Intern at WEHI

Provided technical support and identity management solutions for the REDMANE data registry; integrated Keycloak SSO using OAuth 2.0 and OpenID Connect, configured realms/clients, and deployed Keycloak in Docker-based Nectar VM environments, reducing authentication deployment time by ~80%.

Full Stack Developer at BeeQuant AI

Developed and optimized a crypto trading platform with focus on responsive front-end performance and component-based design; refactored sign-in flow, implemented user profile timezone management, migrated charts to Next.js with Tailwind CSS, and introduced animated loading indicators for better UX; achieved 92% unit test coverage.

Application Developer at University of Melbourne

Android calorie-tracking app with real-time fitness monitoring; integrated sensors and Google Maps API; implemented secure Firebase Authentication; improved sensor accuracy and reduced false positives by 30% across devices.

Application Developer at University of Melbourne

Game to enhance emotional granularity in children with autism; acted as Product Owner in Agile, managed 40+ user stories in Jira; contributed to frontend using React Native for educational gameplay features.

Web Developer Intern at WEHI

Provided technical support, troubleshooting, and identity management solutions for the REDMANE (Data Registry) project, ensuring secure access control and authentication for research institutions. Implemented federated authentication with Keycloak SSO using OAuth 2.0 and OpenID Connect (OIDC); configured realms, clients, and multiple identity providers (AAF, Auth0); deployed Keycloak in Unix-based Nectar VM environments using Docker; resolved authentication and integration issues, reducing deployment time by 80%.