Upwork home
Sign up
Project Catalog
DesignDesign
Video & AudioVideo & Audio
Development & ITDevelopment & IT
MarketingMarketing
Writing & TranslationWriting & Translation
MoreMore

You will get a complete web application from scratch

Juan C R.Status: Offline
Juan C R. Juan C R.
5.0
Rising Talent
Preview image

Let a pro handle the details

Buy Web Application Programming services from Juan C, priced and ready to go.
Juan C R.Status: Offline
Juan C R. Juan C R.
5.0
Rising Talent
Preview image

Let a pro handle the details

Buy Web Application Programming services from Juan C, priced and ready to go.

Project details

Build a modern and scalable web application tailored to your business needs

Custom web development
Full stack web application development
Frontend development
Backend development
PHP and Laravel development
JavaScript development
Python backend development
REST API development
Database design and integration
Third party API integration
Admin dashboard development
Responsive web design
Bug fixing and optimization
Website performance improvement

I will build secure, scalable, and high quality web solutions that help your business grow and improve your online presence
Programming Languages
PHP, JavaScript, Python
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Design
What's included
Service Tiers Starter
$300
Standard
$500
Advanced
$800
Delivery Time 2 days 3 days 7 days
Number of Revisions
224
Design Customization
Content Upload
Responsive Design
Source Code
Optional add-ons You can add these on the next page.
Fast Delivery
+$100 - $500
5.0
3 reviews
100% Complete
(3)
1% Complete
(0)
1% Complete
(0)
1% Complete
(0)
1% Complete
(0)

MR

Michael R.
5.00
May 12, 2026
Need three new templates for my Mailchimp emails. Juan worked through each of the steps with me and provided a complete solution that met my needs.

YO

Yefry O.
5.00
Apr 29, 2026
Senior PHP Developer (Laravel & Livewire) Communication was clear and professional throughout, and he delivered everything with a strong focus on quality and best practices. Overall, a reliable and skilled engineer, especially strong in testing and DevOps related tasks.

js

jackie s.
5.00
Aug 10, 2020
Laravel and php development WOW! Juan is awesome. Im going to be honest, when I first posted the job I needed done on upwork I thought that no one could do what I wanted. Juan took the time and understood what I wanted and created my customer database in my CRM system. The system I have is custom built by another company that is no longer in business so I had to find someone else to understand the code and structure. Within a few days he had already completed most of it and I thought this was going to take a month. We got done in about a week or so and the final product was exactly what I imagined. He took what was in my brain and made it reality. Juan and I are going to be working together for a long time. I would highly consider him.
Juan C R.Status: Offline

About Juan C

Juan C R.Status: Offline
Senior Web & Automation Engineer | PHP, JS & TS, N8N, Zapier
100% Job Success
5.0  (3 reviews)
Edmond, United States - 1:07 am local time
🚀 Building scalable web applications and AI-powered automation systems that solve real business problems - not just shipping code.
With 15+ years of full-stack experience, I help companies design, modernize, and scale applications that are reliable, measurable, and built for long-term growth.
I’ve delivered enterprise and custom business systems across multiple countries, including work with 𝗣𝗮𝗿𝗮𝗺𝗼𝘂𝗻𝘁 𝗚𝗹𝗼𝗯𝗮𝗹 and the 𝗨𝗻𝗶𝘃𝗲𝗿𝘀𝗶𝘁𝘆 𝗼𝗳 𝗢𝗸𝗹𝗮𝗵𝗼𝗺𝗮, building platforms used by thousands of users.

⭐ 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗛𝗶𝗿𝗲 𝗠𝗲
✅ Strong mix of engineering expertise + business understanding
✅ Clean, scalable architecture - built for performance and maintainability
✅ Enterprise-level quality with practical, no-nonsense execution
✅ Clear communication and proactive problem solving
✅ AI-first mindset with focus on automation and efficiency

🔧 𝗪𝗵𝗮𝘁 𝗜 𝗕𝘂𝗶𝗹𝗱
✔ Custom Web Apps, SaaS Platforms & Internal Tools
✔ Enterprise Systems & Legacy Modernization
✔ APIs, Integrations & Automation Platforms
✔ AI Agents, LLM-powered workflows & business process automation
✔ E-commerce & Payment Solutions
✔ CRM, Analytics & Data-Driven Applications
✔ High-performance databases & scalable backend systems

🛠 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸

𝗕𝗮𝗰𝗸𝗲𝗻𝗱:
Java (Spring, Spring Boot, Hibernate, JPA), PHP (Laravel, Symfony, Yii, RESTful APIs, MVC Architecture), Node.js (Express, NestJS), Microservices Architecture, GraphQL, REST API Design, Authentication (JWT, OAuth2), WebSockets, Server-Side Rendering

𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱:
JavaScript, TypeScript, React, Next.js, Vue, Nuxt, Redux, Zustand, Tailwind CSS, Bootstrap, Sass, Responsive Design, Progressive Web Apps (PWA), Component-Driven UI, SPA Development, Accessibility (a11y), Web Performance Optimization

𝗖𝗠𝗦 & 𝗘-𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲:
WordPress, WooCommerce, Shopify, Shopify Plus, Liquid, Elementor, Webflow, Wix, Custom Theme Development, Custom Plugin/App Development, Payment Gateway Integration, Third-Party API Integration, E-Commerce Optimization

𝗔𝗜 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻:
LLMs (GPT-4.x, Anthropic), AI Agents & Multi-Agent Systems, n8n, Zapier, Workflow Automation, HubSpot, Salesforce, GoHighLevel, Prompt Engineering, RAG (Retrieval-Augmented Generation), Vector Databases, AI Chatbots, Voice AI (Twilio, ElevenLabs), Document Processing & AI Pipelines

𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀:
MySQL, PostgreSQL, MongoDB, Redis, MariaDB, SQLite, Database Design, Query Optimization, ORM/ODM, Indexing & Caching Strategies

𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝘃𝗢𝗽𝘀:
AWS, Google Cloud, DigitalOcean, Docker, Docker Compose, CI/CD Pipelines (GitHub Actions, GitLab CI), Nginx, Apache, Linux Server Management, Deployment Automation, Infrastructure as Code (Terraform basics), Monitoring & Logging

𝗧𝗼𝗼𝗹𝘀 & 𝗢𝘁𝗵𝗲𝗿:
Git, GitHub, GitLab, Bitbucket, Postman, Swagger/OpenAPI, ESLint, Prettier, Vite, Webpack, npm, pnpm, Yarn, Agile/Scrum, System Design Principles, Testing (JUnit, PHPUnit, Jest, Cypress)

🤝 𝗕𝗲𝘀𝘁 𝗙𝗶𝘁
I work best with businesses that:
✔ Need scalable software and intelligent automation
✔ Want long-term technical partners
✔ Value clean architecture and measurable results

If that sounds like your project, let’s talk.

Steps for completing your project

After purchasing the project, send requirements so Juan C can start the project.

Delivery time starts when Juan C receives requirements from you.

Juan C works on your project following the steps below.

Revisions may occur after the delivery date.

UI/UX and Architecture Planning

Plan application structure and user experience Design database architecture and system workflow Select suitable technologies and frameworks

Web Development

Develop frontend interfaces and backend systems Build APIs, database connections, and core features Implement secure and scalable solutions

Review the work, release payment, and leave feedback to Juan C.