x
xponent2

Williams J

@xponent2

Mobile App Developer, iOS and Android Specialist

United States
English
About me
Hi, I'm Williams, a mobile app developer specializing in Android and iOS. I help startups, businesses, and entrepreneurs turn ideas into fast, scalable, and user-friendly apps. My services include custom mobile app development with Flutter and FlutterFlow, API and backend integration, Firebase, UI/UX implementation, marketplace and booking apps, bug fixing, App Store and Google Play publishing, and ongoing maintenance. I focus on clean code, smooth performance, and apps that users enjoy.... Read more

Skills

x
xponent2
Williams J
Offline • 
Average response time: 1 hour

See my services

API & Integrations
I will integrate third party tools and apis into your sharetribe marketplace
From$250 / projectMore details
Android App Development
I will do android app development and build your custom mobile app
From$100 / projectMore details

Portfolio

Work experience

Freelance_Web Designer

Website Design & Development Specialist

Freelance Web Designer • Freelance

Jan 2023 - Present • 3 yrs 9 mos

Website Design & Development Specialist I manage the complete website creation process, from strategy and UI/UX design to development, optimization, and launch. I design and develop high-performing, responsive, and user-friendly websites for businesses, startups, entrepreneurs, and organizations across a variety of leading website platforms, including: • Wix • WordPress • Webflow • Framer • Carrd • GoDaddy Website Builder My responsibilities include: ✓ Website Planning & Strategy ✓ UI/UX Design ✓ Custom Website Development ✓ Landing Page Design ✓ E-commerce Website Setup ✓ Website Redesign & Modernization ✓ Mobile Responsiveness Optimization ✓ SEO-Friendly Website Structure ✓ CMS Configuration & Content Management ✓ Performance & Speed Optimization ✓ Third-Party Integrations ✓ Domain Connection & Website Launch I have experience building business websites, portfolios, service marketplaces, directories, booking platforms, membership websites, landing pages, and e-commerce solutions tailored to each client's unique goals and requirements. My focus is to deliver visually appealing, conversion-focused, and scalable websites that help clients establish a strong online presence and achieve measurable business results.

Freelancers

Mobile App Developer (React Native)

Freelancers • Freelance

Jan 2025 - Jul 2025 • 6 mos

Mobile App Developer I design and build cross-platform Android and iOS apps for startups and entrepreneurs, from UI implementation to testing and launch. Featured project: Ferify, a fare-estimate app that helps commuters check accurate transport fares before they travel. • Built with React Native, Expo, and TypeScript • Developed onboarding, sign-up, route selection, voice search, location input, and fare summary screens • Tested and debugged on Android emulators • Focused on clean code, smooth performance, and a simple user experience