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David isn't taking new orders for this project right now. Here are some similar projects to explore.

You will get secure API integrations and automated business workflows

David G.Status: Offline
David G. David G.
5.0
Rising Talent
Preview image

Let a pro handle the details

Buy Custom Website Programming services from David , priced and ready to go.
David G.Status: Offline
David G. David G.
5.0
Rising Talent
Preview image

Let a pro handle the details

Buy Custom Website Programming services from David , priced and ready to go.

Project details

I will integrate third-party services, APIs, payment gateways, CRMs, databases, and business tools into your existing systems to eliminate manual work and improve efficiency. Whether you need custom API development, payment processing, data synchronization, webhook implementation, or workflow automation, I'll deliver a robust solution tailored to your business requirements.

My focus is on creating secure, maintainable integrations that ensure your systems communicate seamlessly while reducing operational overhead.

āœ… š–š‡š€š“ šˆ š‚š€š šš”šˆš‹šƒ
āœ”ļø Custom API Development
āœ”ļø Third-Party API Integrations
āœ”ļø Payment Gateway Integrations
āœ”ļø CRM & ERP Integrations
āœ”ļø Webhooks & Event-Driven Workflows
āœ”ļø Data Synchronization Systems
āœ”ļø Automation & Process Optimization
āœ”ļø REST API & GraphQL Solutions
āœ”ļø Cloud & Database Integrations
āœ”ļø Secure Authentication Systems

āœ… š–š‡š˜ š–šŽš‘šŠ š–šˆš“š‡ šŒš„
āœ”ļø 12+ Years of Full Stack Development Experience
āœ”ļø Secure & Scalable Solutions
āœ”ļø Clean Architecture & Documentation
āœ”ļø Reliable Communication
āœ”ļø Long-Term Support & Maintenance
Programming Languages
HTML & CSS, JavaScript, Python
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization

What's included $750

These options are included with the project scope.

$750
  • Delivery Time 22 days
  • Number of Revisions 3
  • Number of Pages 1
    • Design Customization
    • Content Upload
    • Responsive Design
    • Source Code
5.0
2 reviews
100% Complete
(2)
1% Complete
(0)
1% Complete
(0)
1% Complete
(0)
1% Complete
(0)

MN

Milad N.
5.00
Jun 27, 2026
Full Stack Developer Needed for Custom Web Application, Admin Dashboard, API Integration, React David was excellent to work with. He quickly understood the existing product, made clean and focused frontend improvements, communicated clearly, and handled feedback professionally. The onboarding, invite flow, dashboard, chat, and paywall experience all feel much better now. Highly recommended.

DT

Deni T.
5.00
Jun 15, 2026
Senior Full Stack Developer Needed for SaaS Bug Fixes & Ongoing Improvements David did an excellent job troubleshooting and fixing a bug in our SaaS application. He quickly identified the root cause, communicated clearly throughout the process, and delivered a reliable solution within the estimated timeframe.
He was professional, proactive, and thorough in his testing to ensure the issue was fully resolved. I appreciated his structured approach and attention to detail.
I would definitely work with David again and highly recommend him to anyone looking for a skilled Full Stack Developer.
David G.Status: Offline

About David

David G.Status: Offline
Senior Full Stack Developer | SaaS, AI Agents, Mobile Apps & MVP
100% Job Success
5.0 Ā (2 reviews)
Washington, United StatesĀ - 4:44 am local time
šŸš€ SaaS Development | šŸ¤– AI Agents | āš” n8n Automation | šŸ“± Mobile Apps | šŸ’» Full Stack Development | šŸ§  OpenAI Integration | šŸš€ MVP Development

šŸ‘‹ Hi, I'm David, a Senior Full Stack Developer based in Washington, DC, USA. With 12+ years of software development experience, I help startups, founders, and businesses build scalable SaaS platforms, AI-powered products, mobile applications, MVPs, and custom software solutions.

Whether you're validating a new startup idea, launching a SaaS product, automating workflows with AI, or building a mobile application from the ground up, I can help you turn your vision into a production-ready product. I focus on delivering clean architecture, scalable systems, excellent user experiences, and solutions that create real business value.


š–š‡š€š“ šˆ š‚š€š š‡š„š‹š š˜šŽš” šš”šˆš‹šƒ

šŸš€ š’š€š€š’ šš‹š€š“š…šŽš‘šŒš’
Build scalable SaaS applications with multi-tenant architecture, secure authentication, subscription billing, user management, analytics dashboards, and cloud-ready infrastructure.

šŸ¤– š€šˆ š€š†š„šš“š’ & š€š”š“šŽšŒš€š“šˆšŽš
Create intelligent AI agents and automated workflows using OpenAI, n8n, and modern automation tools to reduce manual work and increase operational efficiency.

šŸ§  š€šˆ-ššŽš–š„š‘š„šƒ š€ššš‹šˆš‚š€š“šˆšŽšš’
Develop AI chatbots, AI assistants, customer support systems, knowledge bases, content generation tools, and custom AI-powered business solutions.

šŸ“± šŒšŽššˆš‹š„ š€ššš‹šˆš‚š€š“šˆšŽšš’
Build modern iOS and Android applications with intuitive user experiences, scalable backend systems, real-time functionality, and secure integrations.

šŸ’» š…š”š‹š‹ š’š“š€š‚šŠ š–š„š š€ššš‹šˆš‚š€š“šˆšŽšš’
Develop responsive, high-performance web applications with modern frontends, secure APIs, scalable databases, and maintainable architecture.

šŸš€ šŒš•š šƒš„š•š„š‹šŽššŒš„šš“
Launch quickly with a production-ready MVP designed to validate your idea, attract early users, and establish a strong foundation for future growth.

šŸ”— š€ššˆ šƒš„š•š„š‹šŽššŒš„šš“ & šˆšš“š„š†š‘š€š“šˆšŽšš’
Build secure APIs and integrate payment gateways, CRMs, third-party services, business tools, and cloud platforms.


š“š„š‚š‡ š’š“š€š‚šŠ

šŸŽØ š…š‘šŽšš“š„ššƒ šƒš„š•š„š‹šŽššŒš„šš“
ā€¢ React.js
ā€¢ Next.js
ā€¢ TypeScript
ā€¢ JavaScript
ā€¢ Tailwind CSS
ā€¢ Material UI

āš™ļø šš€š‚šŠš„ššƒ šƒš„š•š„š‹šŽššŒš„šš“
ā€¢ Node.js
ā€¢ Express.js
ā€¢ NestJS
ā€¢ PHP
ā€¢ Laravel
ā€¢ Python
ā€¢ FastAPI

šŸ“± šŒšŽššˆš‹š„ šƒš„š•š„š‹šŽššŒš„šš“
ā€¢ React Native
ā€¢ Flutter

šŸ—„ļø šƒš€š“š€šš€š’š„š’
ā€¢ PostgreSQL
ā€¢ MySQL
ā€¢ MongoDB
ā€¢ Redis
ā€¢ Firebase
ā€¢ Supabase

ā˜ļø š‚š‹šŽš”šƒ & šƒš„š•šŽšš’
ā€¢ AWS
ā€¢ Docker
ā€¢ CI/CD Pipelines
ā€¢ GitHub Actions
ā€¢ Linux Servers
ā€¢ Vercel


š€šˆ & š€š”š“šŽšŒš€š“šˆšŽš š„š—šš„š‘š“šˆš’š„

šŸ¤– OpenAI API Integration
āš” n8n Workflow Automation
šŸ§  AI Agents & AI Assistants
šŸ” RAG (Retrieval-Augmented Generation)
šŸ’¬ AI Chatbots
šŸ“š Knowledge Base Systems
šŸ”— API Automation
šŸ“Š AI-Powered Business Workflows
šŸš€ Process Optimization & Automation


š–š‡š˜ š‚š‹šˆš„šš“š’ š–šŽš‘šŠ š–šˆš“š‡ šŒš„

āœ… š„ššƒ-š“šŽ-š„ššƒ šš‘šŽšƒš”š‚š“ šƒš„š•š„š‹šŽššŒš„šš“
From planning and architecture to deployment and post-launch support, I manage the complete development lifecycle.

āœ… šš”š’šˆšš„š’š’-š…šŽš‚š”š’š„šƒ š’šŽš‹š”š“šˆšŽšš’
I focus on building products that solve real business problems, improve efficiency, and support growth.

āœ… š’š‚š€š‹š€šš‹š„ š€š‘š‚š‡šˆš“š„š‚š“š”š‘š„
Applications are designed for performance, maintainability, security, and future expansion.

āœ… š‚š‹š„š€š‘ š‚šŽšŒšŒš”ššˆš‚š€š“šˆšŽš
Transparent updates, realistic timelines, and proactive collaboration throughout every project.

āœ… šš”š€š‹šˆš“š˜ & š‘š„š‹šˆš€ššˆš‹šˆš“š˜
Clean code, robust architecture, and attention to detail ensure long-term product success.


šš‘šŽš‰š„š‚š“š’ šˆ š‹šŽš•š„ š–šŽš‘šŠšˆšš† šŽš

šŸš€ Startup MVPs
ā˜ļø SaaS Platforms
šŸ¤– AI Agents & Automation
šŸ“± Mobile Applications
šŸ§  AI-Powered Products
šŸ“Š Admin Dashboards
šŸ’³ Subscription & Payment Systems
šŸ¢ Internal Business Tools
šŸ”— API Integrations
āš” Business Process Automation


š‹š„š“'š’ šš”šˆš‹šƒ š’šŽšŒš„š“š‡šˆšš† š†š‘š„š€š“
If you're looking for a developer who can combine Full Stack Development, Mobile Apps, SaaS, AI Agents, and Automation under one roof, I'd love to hear about your project.

Didn't meet expectations? Full refund, no questions asked.

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