Executive Summary
I’m a versatile Software Engineer and Full-Stack Web Developer with over 8 years of experience across frontend and backend development, data analytics, UX design, and cybersecurity. I specialize in building intuitive, scalable digital solutions that bridge user experience with business intelligence.
My work spans AI-powered systems, data-driven dashboards, secure web applications, and user-centric product design. I enjoy modernizing legacy systems, mentoring developers, and applying emerging technologies such as Generative AI to real-world workflows.
Contact
- Email: leong.shi.yun@gmail.com
- LinkedIn: linkedin.com/in/davina-leong
- GitHub: github.com/davinaleong
- Portfolio: davdevs.me
Social & Content
- YouTube: @DavDevsMedia
- Instagram: @davinaleong
- Threads: @davinaleong
- Facebook: facebook.com/DavinaLSY
Core Skills
Programming & Frameworks
- PHP, Laravel
- JavaScript, TypeScript
- React, Next.js
- HTML, CSS
Data, AI & Analytics
- SQL, Microsoft SQL Server
- Python, Pandas, Jupyter
- Power BI, Microsoft Excel
- Machine Learning, Generative AI
Cybersecurity
- Risk Management
- Password Management
- Incident Reporting
- Data Privacy
Design & Tools
- UI / UX Design
- Figma
- Adobe Premiere Pro
Professional Experience
AI Engineer
STARLIMS · Singapore (Remote)
Jul 2025 – Sep 2025
- Contributed to the PUB STARLIMS project, integrating AI and full-stack solutions into laboratory workflows
- Built GPT-based chatbots and retrieval-augmented generation (RAG) pipelines
- Optimized modules including results entry, validation, approvals, and test plan management
- Collaborated with stakeholders on UI/UX prototypes and sprint planning
Business Data Analyst (BCG RISE 2.0 – Distinction)
Boston Consulting Group (BCG) · Remote
Feb 2025 – Sep 2025
- Applied SCQ and Pyramid frameworks to business problem-solving
- Designed Power BI dashboards and authored SQL scripts for data transformation
- Shared analytics work via GitHub and YouTube
- Mentored peers and supported collaborative learning
Associate Systems Engineer
GIC · Singapore (Hybrid)
May 2023 – Dec 2023
- Worked closely with stakeholders and vendors to support enterprise systems
- Streamlined workflows and improved cross-team collaboration
Web Developer
EPOS Pte Ltd · Singapore
Jul 2022 – Jan 2023
- Developed internal SOPs for web development
- Built WordPress websites using Elementor and MetForm
- Implemented custom CSS and JavaScript features
Web Developer
FirstCom Solutions · Singapore
Jun 2021 – Jul 2022
- Developed and launched 22+ e-commerce websites
- Integrated PayPal and custom payment flows
- Managed cron jobs and databases
Software Engineer
Lively · Singapore
Mar 2020 – May 2021
- Built REST APIs using Laravel
- Developed analytics dashboards with MySQL and Elasticsearch
- Enabled event tracking and revenue analytics
Developer / Junior Web Developer
The Shipyard Private Limited · Singapore
Nov 2015 – May 2018
- Developed web and hybrid mobile applications using PHP, CodeIgniter, Angular, and Ionic
- Assisted in training new developers
- Performed unit and integration testing
Game Developer (Internship)
InnoVillage, Singapore Polytechnic
Oct 2010 – May 2011
- Developed mobile games using Unity3D and Objective-C
Projects & Capstones
Cybersecurity Capstone Project
Vertical Institute · Aug 2024 – Sep 2024
- Identified six high-risk vulnerabilities in a simulated digital bank
- Proposed HTTPS, AES encryption, and password hardening strategies
- Improved resistance to brute-force attacks by up to 60%
UX Design Capstone Project
Vertical Institute · May 2024 – Jun 2024
- Led UX design for a FinTech application
- Conducted user interviews and usability testing
- Improved task success rate by 25% and achieved 90% user satisfaction
Education
Diploma in Information Technology (Game Development)
Singapore Polytechnic
2008 – 2011
- Strong foundation in object-oriented programming and software development
- Exposure to game development and database fundamentals
Certifications
- BCG RISE Machine Learning Expert (2025)
- BCG RISE Python Expert (2025)
- BCG RISE SQL Expert (2025)
- Cybersecurity Bootcamp, Vertical Institute (2024)
- UX Design, Vertical Institute (2024)
- Cybersecurity Awareness Programme, NTUC LearningHub (2023)
- Interaction Design Foundation (IxDF) Membership
Volunteering
Care Group Host
New Creation Church · Oct 2014 – Present
- Host a youth care group every 2nd and 4th Friday of the month
- Provide a safe and welcoming environment for relational and personal growth
Operations & Security – Children’s Ministry
New Creation Church · Jun 2022 – Jul 2024
- Ensured secure check-in and check-out processes for children
- Managed parents and children during peak periods
- Troubleshot technical issues with registration devices
Languages
- Chinese — Native / Bilingual
- English — Full Professional Proficiency
Portfolio
You can explore my projects, tools, and reflections at:
👉 https://davdevs.me
I’m open to opportunities in software engineering, AI-enabled systems, data analytics, and digital innovation.