JOSHUA LEOW
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Software Engineer

Leow Zhi Hao,
Joshua

+65 9678 2245joshualeowzhihao@gmail.comLinkedIn

Frontend engineer specialising in React (TypeScript) to build production-grade SPAs, complex interactive data visualisations, and analytical dashboards that handle real-time data at scale. Proven track record of optimising application performance, implementing complex features, troubleshooting and delivering high-quality code in agile environments. Passionate about solving challenging technical problems and building user-centric solutions. A fast learner who rapidly adapts to new technologies and frameworks. AI-native by practice — shipping full-stack personal projects end-to-end using Claude Code (branch claude/* workflows), Supabase backend integration, and Vercel deployments, while running local models via Ollama and Aider.

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Technical Skills

Programming LanguagesJavaScript (TypeScript), Python, Java, C# (.NET), C++
Frontend TechnologiesReact, Vite, Next.js, D3.js, Tailwind CSS, Figma
Backend TechnologiesASP.NET MVC, Spring Boot, Express.js, JDBC, JPA, Supabase, MongoDB, MySQL
Machine Learning & AITensorFlow, Keras, NumPy, Pandas, Matplotlib, Seaborn, CNN, MLflow
Development Tools & PracticesGit, Vercel, Claude Code, Agile/Scrum, UI/UX Design, Sequence Diagrams, Class Diagrams (WhiteStarUML), Entity-Relationship Diagrams (ERD)
Core CS FundamentalsData Structures, Algorithms

Experience

Project / Software EngineerAug 2023 – Present

ST Engineering Mission Software & Services Pte Ltd

  • Built frontend for production apps with complex interactive data visualisations and analytical dashboards.
  • Optimised memory usage and resolved frontend memory leaks on a Chromium-based framework.
  • Collaborated with stakeholders to align UI/UX designs with user requirements.
  • Delivered in a forward-deployed, behaviour-driven development environment.
Robotic Process Automation InternMar 2022 – Jul 2022

Total Agile Solutions Pte Ltd

  • Developed automated UiPath email workflow with input validation and Excel data processing.
  • Created SDD and PDD technical documentation for automation workflows.

Education

Graduate Diploma in Systems AnalysisAug 2021 – Aug 2022

Institute of System Science, National University of Singapore

C# (.NET, ASP.NET MVC), Java (Spring MVC, JDBC, JPA), JavaScript (React), Android, Python (NumPy, Pandas), MongoDB. Algorithms, data structures, OOP, SDLC, database design.

BSc Business Management with CommunicationsJul 2016 – Apr 2018

University of Birmingham

Honours, Second Upper Division (2:1)

Courses & Certificates

Full-stack Development with AIJun 2025 – Dec 2025

School of Computing, National University of Singapore

Express.js, Flask, React, MongoDB, TensorFlow, Keras (LSTM RNN), MLflow. Achieved 98.33% on weekly assignments and capstone.

IBM Data Science Associate Professional CertificateMay – Jun 2021

IBM