Hi, I’m a freelance full-stack developer with 3yrs+ of experience. I design and develop web, mobile, and desktop apps with UI/UX designs and AI-powered features. I focus on building apps that are easy to remember, and hard to replicate, with clean architecture and reliable code. I also have a proven track record of delivering high-quality products without cutting corners, and within short timeframes. I like to work with people who value authenticity and innovation. If you want someone who communicates clearly and gets the job done, send me a short brief. Portfolio || Personal website: _Website not available. Sign in: https://www.twine.net/signup_…

Cindy Sim Xin Yee

Hi, I’m a freelance full-stack developer with 3yrs+ of experience. I design and develop web, mobile, and desktop apps with UI/UX designs and AI-powered features. I focus on building apps that are easy to remember, and hard to replicate, with clean architecture and reliable code. I also have a proven track record of delivering high-quality products without cutting corners, and within short timeframes. I like to work with people who value authenticity and innovation. If you want someone who communicates clearly and gets the job done, send me a short brief. Portfolio || Personal website: _Website not available. Sign in: https://www.twine.net/signup_…

Available to hire

Hi, I’m a freelance full-stack developer with 3yrs+ of experience. I design and develop web, mobile, and desktop apps with UI/UX designs and AI-powered features.

I focus on building apps that are easy to remember, and hard to replicate, with clean architecture and reliable code. I also have a proven track record of delivering high-quality products without cutting corners, and within short timeframes.

I like to work with people who value authenticity and innovation. If you want someone who communicates clearly and gets the job done, send me a short brief.

Portfolio || Personal website: Website not available. Sign in: https://www.twine.net/signup

See more

Skills

Experience Level

Figma
Expert
Node.js
Expert
CSS
Expert
React Native
Expert
Python
Expert
JavaScript
Expert
Adobe Photoshop
Expert
Adobe Illustrator
Expert
TypeScript
Expert
PostgreSQL
Expert
Vue.js
Expert
React JS
Expert
PyTorch
Expert
MongoDB
Expert
Flutter
Expert
SQL
Expert
Adobe XD
Expert
Docker
Intermediate
Kubernetes
Intermediate
Jira
Intermediate
GIMP
Intermediate
Express
Intermediate
SolidJS
Intermediate
Swift
Intermediate
AngularJS
Intermediate
GitHub Copilot
Intermediate
See more

Language

English
Fluent
Chinese
Fluent
Malay
Intermediate

Work Experience

Full-stack Developer at Gradient Monster Enterprise
March 1, 2025 - Present
Built an across-platform order management mobile app using React Native, Node.js and PostgreSQL for a local seller/manufacturer.
Full-stack Developer at Nydus Network Sdn Bhd
August 1, 2024 - February 28, 2025
Redesigned multiple e-commerce websites using Nuxt within a month. Built, trained, and fine-tuned an OCR AI model using Python and PyTorch. Independently designed and developed a VPN app using Flutter, including a website (Nuxt) and a customer support bot for the VPN app.
Software Engineer at Oppstar Technology Sdn Bhd
January 1, 2023 - March 31, 2024
Worked with team to develop a cross-platform CAD application using TypeScript and Solid JS.
Software Engineer Intern at Oppstar Technology Sdn Bhd
August 1, 2022 - December 31, 2022
Worked with my team to develop a cross-platform CAD application using TypeScript and SolidJS.
Frontend Web Developer at Codemax Sdn Bhd
June 1, 2024 - July 31, 2024
Since I was a solo web developer, I worked independently communicating with the project team to maintain the company's web app using Angular.
Freelance Full-stack Developer at Gradient Monster Enterprise
March 1, 2025 - Present
Built a cross-platform order management mobile app using React Native, Node.js and PostgreSQL for a local seller/manufacturer.
Freelance Full-stack Developer at Nydus Network Sdn Bhd
February 28, 2025 - October 22, 2025
Redesigned multi e-commerce websites using NuxtJS; built and trained an OCR AI model with Python and PyTorch; designed and developed a VPN app using Figma and Flutter (including a website and customer support bot); developed a screen translator desktop app for macOS with Swift; built and trained a translation AI model (Seq2Seq with transformers) using PyTorch.
Frontend Web Developer at Codemax Sdn Bhd
July 31, 2024 - October 22, 2025
Worked with team to develop CAD application frontend; implemented TypeScript and SolidJS.
Software Engineer at Oppstar Technology Sdn Bhd
March 31, 2024 - October 22, 2025
Developed cross-platform CAD application using TypeScript and SolidJS as part of the team.
Software Engineer Intern at Oppstar Technology Sdn Bhd
December 31, 2022 - October 22, 2025
Contributed to CAD app development using TypeScript and SolidJS.

Education

Computer Science major in Software Engineering at INTI International University
January 1, 2020 - December 31, 2022
BSc Computer Science (Software Engineering) at Coventry University
January 1, 2020 - December 31, 2022
Bachelor of Computer Science (Software Engineering) at INTI International University / Coventry University
January 1, 2020 - December 31, 2022

Qualifications

Scrum Master + Agile Scrum
April 1, 2024 - October 22, 2025
Udemy Web Development
April 1, 2024 - October 22, 2025
Scrum Master + Agile Scrum
April 1, 2024 - October 22, 2025
Udemy Web Development
April 1, 2024 - October 22, 2025

Industry Experience

Software & Internet, Education, Professional Services, Media & Entertainment, Retail
    uniE621 Personal Website 2025
    My personal website in 2025. Link: https://www.twine.net/signin Tech Stack: TypeScript GSAP designer developer typescript react nextjs tailwindcss gsap branding…
    uniE608 Fashion E-commerce Website
    Tech Stack: MERN] MongoDB Node.js Built this website as part of my portfolio showcase. A full-stack fashion e-commerce website with user authentication, product management, shopping cart, and order processing functionalities. Images and videos are from Body Positivity Photoshoot by Continuous Content on Artlist: https://www.twine.net/signin fashion ecommerce website web mongodb expressjs react nodejs…
    uniE621 Cross-platform Order Management Mobile App
    1 | Client: Local Manufacturer & Seller Tech Stack: React Native, Node.js, PostgreSQL, REST APIs TLDR: Built a cross-platform order management mobile app for local seller/manufacturer. LBCR (long but can read): Problem / Context: A seasonal seller/manufacturer relied on phone calls, manual calculations, and paper logs during peak season. This caused errors, unpredictable production, and an incident of internal cash theft. The business needed a simple digital tool to coordinate orders, plan ingredients, schedule factory runs, and keep financial logs — all usable by older staff. My role: End-to-end product and technical owner: requirements, UX, frontend (React Native), backend APIs (Node.js), DB schema (Postgres), deployment, and staff onboarding. Key features / solution: • Order Management (role-restricted CRUD) • Recipe-driven Inventory Checks (auto-evaluate sufficiency per order) • Material Production Orders (MPO) and Product Production Orders (PPO) flows (factory ↔ store) • Yield Estimator (per-unit, wastage) to support ingredient purchasing and factory production planning • Packaging manager with per-box optimisation and pickup/delivery flows • Payment & accounting ledger, audit trail for transactions and actions • Simple, high-contrast UI with large touch targets for older staff Challenges & how I solved them: • Low technical literacy: simplified UI, made actions one-tap where possible, used clear Chinese labels and large fonts. • Seasonal peaks & uncertain yields: added yield estimator + configurable wastage to avoid under/over-production. • Trust & theft prevention: integrated audit logs and payment recording; segregated responsibilities by role. Outcome: Delivered a production-ready system that digitizes seasonal workflows, reduces operational risk, and provides data for future process improvements. (Client details confidential.) crossplatform order management mobile mobileapp app reactnative nodejs postgresql restapis…
    uniE608 Yoga Website
    Link: https://www.twine.net/signin Tech Stack: TypeScript GSAP Built this website as part of my portfolio showcase. I drew the logo, created the wallpaper image using GIMP, then animated it using Veo 3 AI model. Most of the other images are generated using Nano Banana, except the ones at Benefits section, I drew them. yoga website web business branding landing page webpage typescript vue nuxt tailwindcss gsap gimp design…
    uniE608 My Artworks Website
    Link: https://www.twine.net/signin Tech Stack: TypeScript GSAP Built this website as part of my portfolio showcase. A collection of my artworks from my university years. All of them are created using Procreate Illustrator. art artworks design website webpage typescript angular tailwindcss gsap procreate gimp photoshop illustrator university…
    uniE621 VPN Mobile App (Light Mode)
    A VPN mobile app designed using Figma and developed using Flutter. Features include server selection, connection status, and user-friendly interface. vpn mobile mobileapp app figma flutter ui ux uiux design…
    uniE621 VPN Mobile App (Dark Mode)
    A VPN mobile app designed using Figma and developed using Flutter. Features include server selection, connection status, and user-friendly interface. vpn mobile mobileapp app figma flutter ui ux uiux design…
    uniE608 VPN Website
    Tech Stack: TypeScript TailwindCSS A simple marketing website for VPN mobile app. vpn website web webpage branding marketing landing typescript vue nuxtjs tailwindcss blue minimalist…
    uniE608 Screen Translator
    Tech Stack: Swift A macOS desktop app that translates text on the screen in real-time. macos desktop app screen translator swift…
    uniE608 Personal Website 2024
    My personal website in 2024. Link: https://www.twine.net/signin Tech Stack: TypeScript GSAP personal website personalwebsite branding typescript react nextjs tailwindcss gsap design…

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