I will build a functional web app prototype or mvp for your idea


About this gig
Turn your product idea into a working web application you can test, demo, and build on.
I am a senior full-stack and backend developer with 13+ years of experience building SaaS platforms, APIs, distributed systems, and AI-assisted delivery pipelines. I combine hands-on architecture and engineering with supervised coding agents to move faster while keeping technical judgment, review, and accountability human-led.
Every project starts with a defined scope, core user flow, acceptance criteria, and delivery milestones.
Depending on your package, your build may include:
Responsive web interface
Authentication and user roles
Database design and APIs
File uploads or third-party integrations
Deployment and technical documentation
Source code with clear ownership
The Basic package is designed for one focused prototype flow. Standard and Premium cover functional MVPs and larger product phases.
Please message me before ordering if your project includes payments, complex AI behavior, regulated data, real-time systems, multiple user roles, or more than one external integration. I will help you choose the smallest sensible first phase and confirm what fits the package.
Get to know Jose M.
Senior Full Stack and AI Systems Developer
- FromCosta Rica
- Member sinceAug 2026
- Avg. response time1 hour
Languages
Spanish, English
My Portfolio
FAQ
What counts as one core user flow?
A connected path such as sign up, submit information, and view a result. Multiple roles, dashboards, payments, or integrations may require a larger package.
Do I receive the source code?
Yes. You receive the source code and handoff notes for the agreed scope. Third-party licenses, hosting, and paid API usage are separate.
Can you build file uploads or integrations?
Yes. File uploads and external integrations can be included when they are part of the agreed scope. Please message me first so I can confirm the right package.
Do you use AI to build the project?
I use supervised coding agents for research, implementation, testing, and review. I remain responsible for architecture, scope, quality, and delivery.
What should I send before ordering?
Share your target users, core workflow, required screens, integrations, examples you like, and target date. I will confirm the appropriate package.
