Full-Stack Software Developer

Joshua Au-Yeung

********@********.** Mobile 1-780-***-**** Toronto, Ontario, Canada

HIGHLIGHT OF QUALIFICATIONS

Full Stack Developer with 8+ years building production web applications across healthcare AI, fintech, and public sector environments. Delivered multiple ends to end applications and supported enterprise systems at TD and Scotia. Strong in Java Spring, Python, TypeScript, Vue, Angular, React, and SQL, with cloud exposure in Azure. Known for shipping scalable APIs, clean UI, and measurable improvements in performance and user experience.

Languages: Java, TypeScript, JavaScript, Python, SQL, Visual Basic

Frameworks: Spring, Spring Boot, Angular, Vue, React, Node.js, Nest.js, .Net, Flask, Flutter

Data: MongoDB, Spark, PySpark, Pandas, NumPy

Cloud and Tools: Azure, Git, GitHub, Bitbucket, Jira, Docker, Microservices

AI and ML: Machine Learning, Deep Learning, AI Agents, LLMs, Claude AI

Linked In: https://www.linkedin.com/in/joshua-auyeung/

Portfolio: https://github.com/JackSparks

SELECTED PORTFOLIO PROJECTS

Task Management Application (https://github.com/JackSparks/Ezra-Task-Management-Application ): A modern, full-stack web app for managing daily tasks. Tech: .Net, React. Result: responsive, persistent, and simple tool to keep track of your regular activities.

US Election Prediction Model (https://github.com/JackSparks/US-Election-Prediction-Model ): predicts which political party will win in each U.S. county. Tech: Python, Pandas, NumPy, Machine Learning. Result: quantitively evaluates effectiveness of election polling data.

WORK EXPERIENCE

AI Developer 2026 - Present

Factr, Toronto, Ontario

Engineered end-to-end AI-driven workflow automation across a full-stack data platform, integrating frontend, backend APIs, and LLM-powered services to streamline client data operations and reduce manual processing effort by 40%.

Architected and deployed production LLM agent pipelines, connecting retrieval, reasoning, and execution layers across microservices to support real-time decision-making and improve workflow responsiveness across data-intensive use cases.

Designed reusable prompt engineering standards and LLM evaluation frameworks, enabling consistent model behavior across features and improving output reliability and accuracy by 25% while reducing cross-system variability.

Built and optimized scalable backend services and APIs supporting ingestion, transformation, and execution stages of data pipelines, improving system throughput by 30% and reducing latency across high-volume production workloads.

Full Stack Developer 2025 - 2026

Ezra, Toronto, Ontario

Built responsive UI features for AI supported cancer detection workflows across desktop and mobile used by 5,000 plus users, while collaborating in Agile teams with product and design.

Designed and maintained REST APIs handling high volume medical data, reducing ingestion errors by 30 percent and improving data reliability

Improved application performance by optimizing frontend and backend bottlenecks, reducing load times by 35 percent

Developer 2022 - 2023

Sagenet, Toronto, Ontario

Delivered 6 production Angular applications from requirements through deployment, integrating REST APIs to visualize data and support user interaction

Built interactive digital experiences using BrightSign and Navori hardware configurations to support large retail deployments for brands like Home Depot, Sport Chek, and Noodles

Created digital signage systems deployed across 500+ stores, including automated menu solutions with store specific data and scalable management across locations

Independent Consultant, Instructor, and Author 2017 – Present

Udemy and Skillshare, Toronto, Ontario

Delivered client websites and interactive web experiences, including API integrations and SEO.

Built and marketed 6 online courses with 70,000+ students worldwide.

Authored four technical books with Packt Publishing.

Programmer / Developer 2021 - 2022

SyLogix Consulting Inc., Toronto, Ontario

Built web applications supporting aviation operations scheduling for flight coordinators and developed personnel tracking systems for provincial fire management programs, improving visibility into qualifications, availability, and training status

Built compliance workflow features for drinking water quality training and certification management, reducing manual tracking and improving audit readiness

Migrated 20+ ministry websites while meeting AODA accessibility requirements and ensuring compliance with accessibility standards

Analyst 2019 - 2020

Scotia Bank, Toronto, Ontario

Supported CRM Salesforce operations, forecasting, reporting, and process automation impacting 1000+ users.

Diagnosed and resolved 200+ data issues in Demand Tools using SQL queries and structured data cleanup, improving data quality and reporting accuracy.

Java Developer 2018 - 2019

TD Bank, Toronto, Ontario

Enhanced mortgage approval and GIC purchasing applications using Angular, Java, Spring Boot, and SQL in an Agile team, delivering service based backend components and API driven features while improving stability and user experience through 50 plus production fixes and enhancements

Improved API endpoint design and optimized database stored procedures, reducing redundancy by 20 percent and enabling more efficient service interactions across the application

Software Developer 2017 - 2019

FDM Group, Toronto, Ontario

Consulted, developed, reviewed code; liaised with end users to fix defects, and added functionality to applications by designing and implementing 2 investment products for financial institutions.

EDUCATION

University of Waterloo – Back-End Development Certificate (Security, Databases, Cloud Services) (2025)

University of Toronto – Artificial Intelligence Certificate (Deep Learning, Intelligent Agents) (2025)

University of Toronto - Data Science Certificate (Machine Learning, Big Data, Statistics) (2025)

Toronto Innovation College – AI Fundamental and Engineer Associate (2025)

busyQA Full Stack Java Developer Certificate (Angular / Spring) (2020)

Centennial College Java SE/EE/Angular Programming Certificate (2020)

Bachelor of Commerce (Finance), Cooperative Education Program (2016) - University of Alberta

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