Hire the Best Code Refactoring Specialists
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Daniel B.

Sparks, Nevada

$20/hr
5.0
5 jobs

I’m a developer with a can-do attitude and extensive experience with a variety of game engines and coding languages. My specialties are bug fixing, optimization, and rapid prototyping. I look forward to working together!

  • Game Design
  • Programming Bug Fix
  • Unreal Engine
  • Unity
  • Game Testing
  • Atlassian Confluence
  • Jira
  • Reverse Engineering
  • Embedded C
  • Microcontroller Programming
  • ESP32
  • C++
  • C#
  • Voice-Over Recording
  • Audio Recording
  • 3D Design
  • 3D Modeling
  • Video Editing & Production
  • Video Editing Software
  • Audio Editing
Robert D.

Louisville, Kentucky

$65/hr
5.0
43 jobs

Are technical glitches, broken code, or slow load times tanking your business? I can fix that. With over 18 years of hands-on web development experience and the experience of 500+ completed website support sessions, I specialize in stepping in when things go wrong—and making them right again. Whether you’re a global brand or a growing small business, I deliver fast, reliable, and stress-free technical solutions so you can focus on running your business. I am the founder of WebsiteTrouble, where I help clients diagnose, repair, and optimize their online presence across virtually every major platform. How I Can Help You: 🛠️ Troubleshooting & Technical Repairs Emergency Fixes: Resolving "Site Down" emergencies, critical plugin/theme conflicts, and database crashes. Malware & Hack Recovery: Cleaning compromised sites, removing malicious code, and restoring security. Speed & Performance Optimization: Fixing sluggish performance to improve user experience and Google Core Web Vitals. Platform Migrations & Upgrades: Seamlessly moving sites, databases, and domain setups without losing traffic or data. 💻 Full-Stack Development & Design Custom website development, redesigns, and feature enhancements. Responsive, mobile-first design tailored to your brand identity. E-commerce troubleshooting, checkout repair, and payment gateway integration. 📈 Growth, SEO & Analytics Technical SEO Audits: Fixing crawl errors, indexation issues, and site structure to boost search rankings. Google Analytics & Tracking: Setting up GA4, custom event tracking, conversion goals, and error monitoring. Google Ads Optimization: Technical setup, tag management, and landing page optimization to improve ad ROI. Why Clients Trust Me: 18+ Years of Battle-Tested Experience: I’ve seen almost every bug, crash, and technical edge-case imaginable. 500+ Success Stories: Proven track record spanning enterprise brands and local businesses alike. Clear & Direct Communication: No jargon—just transparent updates, realistic timelines, and reliable solutions. Ready to get your site running flawlessly? Send me a message right here on Upwork with a brief summary of what's going on, and let's get it resolved!

  • SEO Audit
  • Technical SEO
  • Search Engine Optimization
  • Security Plugin
  • Malware Removal
  • Web Design
  • Troubleshooting
  • Website Maintenance
  • Shopify
  • Shopify Theme
  • PHP
  • WordPress
  • CSS
  • MySQL
  • Liquid
Mo A.

Katy, Texas

$45/hr
5.0
4 jobs

𝑳𝒐𝒐𝒌𝒊𝒏𝒈 𝒇𝒐𝒓 𝒂 𝑯𝒚𝒃𝒓𝒊𝒅 𝑴𝒐𝒃𝒊𝒍𝒆 𝑨𝒑𝒑 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒆𝒓 𝒘𝒉𝒐 𝒄𝒂𝒏 𝒃𝒖𝒊𝒍𝒅 𝒇𝒂𝒔𝒕, 𝒔𝒄𝒂𝒍𝒂𝒃𝒍𝒆, 𝒂𝒏𝒅 𝒉𝒊𝒈𝒉-𝒒𝒖𝒂𝒍𝒊𝒕𝒚 𝑭𝒍𝒖𝒕𝒕𝒆𝒓 𝒂𝒏𝒅 𝑹𝒆𝒂𝒄𝒕 𝑵𝒂𝒕𝒊𝒗𝒆 𝒂𝒑𝒑𝒍𝒊𝒄𝒂𝒕𝒊𝒐𝒏𝒔 𝒇𝒐𝒓 𝒃𝒐𝒕𝒉 𝒊𝑶𝑺 𝒂𝒏𝒅 𝑨𝒏𝒅𝒓𝒐𝒊𝒅? 𝕐𝕠𝕦'𝕣𝕖 𝕚𝕟 𝕥𝕙𝕖 𝕣𝕚𝕘𝕙𝕥 𝕡𝕝𝕒𝕔𝕖⭐ I help startups, SaaS companies, and growing businesses turn ideas into modern hybrid mobile apps that are fast, reliable, and ready to scale. Whether you're building a new MVP, improving an existing mobile app, or launching a production-ready product, I provide complete Hybrid App Development services from planning to deployment. As a Hybrid Mobile App Developer, I specialize in Flutter Development and React Native Development, building cross-platform mobile applications with a single codebase while maintaining native performance and a polished user experience. Every application is developed with clean architecture, responsive UI, optimized performance, and scalability in mind. Beyond mobile development, I also build secure backend systems, integrate third-party APIs, connect cloud services, and implement AI-powered features. This allows you to work with one developer for your complete mobile application instead of coordinating multiple freelancers. Whether your project requires Firebase, Supabase, REST APIs, authentication, push notifications, real-time data, payment gateways, or AI integrations, I deliver solutions that are maintainable, secure, and built for long-term growth. Services I Offer ✔ Hybrid App Development ✔ Flutter App Development ✔ React Native App Development ✔ Cross-Platform Mobile App Development ✔ Android App Development ✔ iOS App Development ✔ MVP Development for Startups ✔ Figma to Flutter & React Native ✔ UI Implementation & Responsive Design ✔ REST API Integration ✔ Firebase & Supabase Development ✔ Node.js Backend Development ✔ Authentication & User Management ✔ Push Notifications & Real-Time Features ✔ Payment Gateway Integration ✔ AI ChatGPT & OpenAI Integration ✔ AI Chatbots & AI Features ✔ App Store & Google Play Store Deployment ✔ Bug Fixing & Mobile App Maintenance ✔ Performance Optimization & Code Refactoring ✔ Clean Architecture, Riverpod, Bloc & GetX State Management Why Clients Work With Me • Hybrid Mobile App Development specialist • Flutter & React Native expertise • Full Stack Mobile App Development • End-to-end development from idea to launch • Clean, scalable, and maintainable code • Strong communication and reliable delivery • Business-focused solutions, not just code • Long-term support and continuous improvements If you're looking for a Flutter Developer, React Native Developer, or Hybrid Mobile App Developer who understands both mobile apps and backend development, let's build an application that delivers an excellent user experience and supports your business as it grows✅

  • Android App Development
  • iOS Development
  • Mobile App Development
  • Flutter
  • Smartphone
  • Chat & Messaging Software
  • User Authentication
  • Hybrid App Development
  • Native App
  • React Native
  • API
  • API Integration
  • Android
  • In-App Purchases
  • Mobile App Design
  • AI Chatbot
  • Android SDK
  • Mobile UI Design
  • Bug Fix
  • User Profile Creation
Nashid S.

Houston, Texas

$105/hr
5.0
8 jobs

My specialties are software design, engineering, web, and script development. I work in various programming languages ranging from Ruby on Rails/C/C++/C#/Java/Python/Matlab/PHP/ Javascript/TypeScript. I also do WordPress, Node, and React development. I have experience working in large companies for software development and testing software on various hardware. I also specialize in project management and content creation. I am a hard worker and will deliver 100% satisfaction.

  • WordPress
  • C#
  • HTML5
  • Software Debugging
  • PHP
  • GraphQL
  • Software Development
  • Software Testing
  • Programming Bug Fix
  • Software Design
  • Writing
  • Angular
  • React
  • TypeScript
  • Cloud Development
Steven L.

Austin, Texas

$28/hr
5.0
6 jobs

I help clients fix UI issues, improve responsiveness, and clean up frontend code — fast. Strong in React, JavaScript, HTML, and CSS with same-day or next-day delivery. I specialize in small, well-defined front-end tasks where clean UI and speed matter. What I can help you with: • React UI component fixes and cleanup • HTML/CSS spacing, alignment, and layout issues • Responsive design (desktop / tablet / mobile) • Minor JavaScript tweaks and frontend polish • Converting designs into clean, working UI I focus on: ✔ Clean, maintainable code ✔ Clear communication ✔ Fast turnaround ✔ Following instructions precisely If you have a UI issue or frontend fix that needs to be done quickly and correctly, I can help.

  • Web Application
  • Ecommerce Website
  • Ecommerce
  • Web Development
  • Responsive Design
  • HTML
  • CSS
  • JavaScript
  • React
  • Front-End Development
  • Web Design
  • Cross-Browser Compatibility
Orion H.

Washington, District Of Columbia

$56/hr
4.9
230 jobs

I'm a frontend developer with deep expertise in JavaScript and web performance. My background is in e-commerce development — I'm a certified Shopify theme developer and have worked with dozens of Shopify Plus stores delivering complex features and major performance gains — and I now bring that same rigor to frontend projects of all kinds. Performance is my specialty. Beyond standard tools like Google PageSpeed Insights, GTmetrix, and WebPageTest, I build and maintain my own custom diagnostic tools — including an audit tool that detects fake "pagespeed optimizer" apps and separates manipulated scores from real performance issues. If you're curious about your site's actual speed versus its reported scores, just ask and I can run it for you. Services offered: Pagespeed optimization and Core Web Vitals improvement Cleaning up and refactoring messy codebases Complex custom features — search functionality, product bundles, contact forms, bespoke discount logic Migrations and upgrades — modernizing outdated codebases while preserving existing functionality Tech: Strong foundation in vanilla JavaScript, HTML, and CSS, with templating experience in Liquid. Because I work from JS fundamentals up rather than framework-first, I adapt quickly to React, Vue, or whatever your stack requires. Currently expanding into PHP.

  • HTML
  • CSS
  • Front-End Development
  • Liquid
  • Shopify
  • Shopify Development
  • Shopify SEO
  • Page Speed Optimization
  • Website Optimization
  • Shopify Templates
  • Google Analytics 4
  • Theme Development
  • Ecommerce
  • Software Development
  • Performance Optimization

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