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Timeline

Professional and personal journey of Davina Leong, tracing her growth from early software development and game design to full-stack engineering, AI, data analytics, cybersecurity, and long-term community leadership.

·6 min read

By Davina Leong

2025 — AI, Data & Advanced Systems

AI Engineer

STARLIMS · Singapore (Remote)
Jul 2025 – Sep 2025

I contributed to the PUB STARLIMS project, integrating AI-driven solutions into laboratory workflows. My work focused on building GPT-based chatbots, implementing retrieval-augmented generation (RAG) pipelines, and optimising critical modules such as results entry, validation, approvals, and test plan management. This role allowed me to bridge AI, full-stack development, and UX, modernising legacy systems used at scale.


Business Data Analyst (BCG RISE 2.0 – Distinction)

Boston Consulting Group (BCG) · Remote
Feb 2025 – Sep 2025

I completed the BCG RISE 2.0 Business Data Analyst programme with Distinction, developing strong foundations in SQL, Python, structured thinking, and data storytelling. I designed Power BI dashboards, authored SQL scripts for data transformation, and shared my work publicly via GitHub and YouTube while mentoring peers along the way.


Certifications (BCG RISE)

  • Machine Learning Expert
  • Python Expert
  • SQL Expert

2024 — Security, UX & Applied AI

Cybersecurity Capstone Project

Vertical Institute
Aug 2024 – Sep 2024

I assessed a simulated digital bank, identifying six high-risk vulnerabilities and proposing remediation strategies including HTTPS enforcement, AES encryption, and password hardening. These improvements increased resistance to brute-force attacks by up to 60% and strengthened incident response readiness.


UX Design Capstone Project

Vertical Institute
May 2024 – Jun 2024

I led UX design for a FinTech application, conducting interviews and usability testing to uncover friction points in the user journey. By designing and validating high-fidelity prototypes, I improved task success rates by 25% and achieved 90% user satisfaction.


Applied AI for Developers Workshop

Independent · Jul 2024

I explored Generative AI in real development workflows, using AI tools to fix bugs, generate reusable components, and improve code quality. This experience strengthened my interest in AI-assisted development and responsible adoption of emerging tools.


Certifications

  • Cybersecurity Bootcamp — Vertical Institute
  • UX Design — Vertical Institute

2023 — Enterprise Systems & Operations

Associate Systems Engineer

GIC · Singapore (Hybrid)
May 2023 – Dec 2023

I worked closely with stakeholders and vendors to support enterprise systems, streamline workflows, and improve collaboration across teams. This role sharpened my ability to operate in large, structured organisations with complex processes.


Cybersecurity Awareness Programme

NTUC LearningHub · Feb 2023


2022 — Leadership in Service & Web Development

Web Developer

EPOS Pte Ltd · Singapore
Jul 2022 – Jan 2023

I developed WordPress-based websites and internal SOPs, implementing custom CSS and JavaScript features while supporting team-wide development standards.


Operations & Security — Children’s Ministry (Volunteer)

New Creation Church
Jun 2022 – Jul 2024

I supported operational and security processes, ensuring safe check-in and check-out for children, managing peak-period flow, and troubleshooting registration devices.


2021–2022 — Scaling E-Commerce

Web Developer

FirstCom Solutions · Singapore
Jun 2021 – Jul 2022

I developed and launched 22+ e-commerce websites, implementing responsive designs, payment integrations, cron jobs, and database management—gaining deep experience in production-grade web delivery.


2020–2021 — Product & Platform Engineering

Software Engineer

Lively · Singapore
Mar 2020 – May 2021

I built REST APIs using Laravel and developed analytics dashboards with MySQL and Elasticsearch, enabling event tracking and revenue insights.


2015–2018 — Foundations in Web Development

Developer / Junior Web Developer

The Shipyard Private Limited · Singapore
Nov 2015 – May 2018

I worked on enterprise web systems and hybrid mobile applications using PHP, CodeIgniter, Angular, and Ionic. I also contributed to testing, documentation, and onboarding new developers.


2014–Present — Long-Term Community Leadership

Care Group Host (Volunteer)

New Creation Church
Oct 2014 – Present

For over a decade, I have hosted a youth care group at my home every 2nd and 4th Friday of the month, providing a safe, welcoming space for connection, growth, and mentorship.


2010–2011 — Early Career & Education

Game Developer (Internship)

InnoVillage, Singapore Polytechnic
Oct 2010 – May 2011

I developed mobile games using Unity3D and Objective-C, marking my first hands-on exposure to real-world software development.


Diploma in Information Technology (Game Development)

Singapore Polytechnic
2008 – 2011

I built a strong foundation in object-oriented programming, software development, and game technologies—setting the stage for my future career in tech.


Looking Ahead

My journey reflects a consistent theme: learning deeply, building responsibly, and serving meaningfully. I’m excited to continue growing at the intersection of software engineering, AI, data, security, and human-centred design.

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