I will develop custom ai software fullstack web application ai software ai web in USA


About this gig
Are you looking for someone based in the USA who can build dependable, scalable software with clean code and real results?
I create custom web applications, business platforms, and AI-driven features that help companies work smarter and grow faster.
I work with startups and established teams to deliver everything from MVPs to complete SaaS systems. My stack includes Python, Django, React, and modern AI tools like OpenAI.
What I Build
- Custom Web Applications: Python, Django, FastAPI, React, Node.js, JavaScript, Flutter, Dart, React Native, PHP/Laravel, SQL, PostgreSQL, MongoDB, AWS, Azure, GCP
- AI Features: ChatGPT integrations, automation, analytics
- Business Software: CRMs, dashboards, internal tools
- Startup MVPs: Fast, clean builds to get you market-ready
- Full-Stack Development: End-to-end builds with CI/CD deployment.
Why Clients Work With Me
- 7+ years of full-cycle development experience
- 40+ completed systems for funded startups and established businesses
- Practical, business-focused solutions just code
- Clear communication, reliable delivery, and long-term support
Get to know Lee S
New to Fiverr, but backed by years of web design and development
- FromUnited States
- Member sinceAug 2011
Languages
English
FAQ
What services do you offer in software development?
I build custom software from start to finish. This includes UI/UX design, frontend and backend development, API creation and integration, deployment, and ongoing maintenance. Everything is developed with modern tools and methods to ensure your system runs smoothly and scales as your needs grow.
How do you approach web application development?
I start by understanding your goals and mapping out the right architecture for your project. From there, I create a clean, responsive UI/UX and build the application using frameworks such as HTML, CSS, Bootstrap, React, Flutter, or Angular on the frontend, and PHP/Laravel, Node.js, Dart, or Django o
Can you develop mobile applications for both iOS and Android?
Yes. I build cross-platform mobile apps using frameworks like Flutter and React Native, allowing one codebase to run on both iOS and Android while still delivering a native, high-quality user experience.
What is your project management process?
I use both Agile and Waterfall methods depending on the project. This allows for flexibility, clear planning, and steady progress. You’ll receive regular updates, review points, and iterations throughout the process to make sure the final product matches your expectations.
How do you ensure the quality and security of the applications you develop?
I use a thorough testing process that includes unit, integration, and full system testing to keep everything stable and reliable. Security measures are built in from the start, following trusted data protection practices and meeting standards such as GDPR or HIPAA when required.
What are your rates and how do you charge for a project?
My pricing is based on the project size, complexity, and tech stack. Once I review your requirements, I’ll share a clear estimate. I offer both fixed-price work and hourly billing, giving you flexibility to choose what works best for your project.
Do you provide maintenance and support after development?
Yes. I offer ongoing maintenance and support that covers updates, bug fixes, performance improvements, and any adjustments needed as your users or technology requirements evolve.
Can you handle data migration and system integrations?
Yes. I work with data migration from older systems to modern platforms and can integrate a wide range of third-party services and APIs to extend your application’s features and performance.
How soon can you start working on a new project?
I can begin once we review your requirements and agree on the scope. If you'd like, we can set up a Zoom call to go over the details and timeline before getting started.

