You will get a full-stack SaaS — design, backend, and engineering from zero
Rising Talent
Rising Talent
Project details
You have a SaaS idea. I'll take it from a blank document to a production-ready product — design, backend, frontend, and deployment included.
I've built SaaS platforms from scratch, including Lab2Next — a multi-role clinical laboratory system with patient registration, digital-signature workflows, full audit trails, and role-based staff management. Live and in production.
What you get with this project:
— Architecture and scope doc before any code is written
— UI/UX design in Figma, reviewed and approved by you
— Backend: auth, user roles, business logic, and REST API (NestJS + PostgreSQL)
— Frontend in React/Next.js, pixel-accurate and mobile-first
— Payment integration (Stripe) on Standard and Advanced tiers
— Deployment to production with CI/CD pipeline
— Full source code, documented and delivered
— 30 days post-launch support on the Advanced tier
I take end-to-end ownership — not just coding tickets. I communicate clearly, ship predictably, and overlap US time zones.
I've built SaaS platforms from scratch, including Lab2Next — a multi-role clinical laboratory system with patient registration, digital-signature workflows, full audit trails, and role-based staff management. Live and in production.
What you get with this project:
— Architecture and scope doc before any code is written
— UI/UX design in Figma, reviewed and approved by you
— Backend: auth, user roles, business logic, and REST API (NestJS + PostgreSQL)
— Frontend in React/Next.js, pixel-accurate and mobile-first
— Payment integration (Stripe) on Standard and Advanced tiers
— Deployment to production with CI/CD pipeline
— Full source code, documented and delivered
— 30 days post-launch support on the Advanced tier
I take end-to-end ownership — not just coding tickets. I communicate clearly, ship predictably, and overlap US time zones.
Programming Languages
HTML & CSS, JavaScript, TypeScriptWhat's included
| Service Tiers |
Starter
$400
|
Standard
$900
|
Advanced
$2,500
|
|---|---|---|---|
| Delivery Time | 14 days | 21 days | 35 days |
Number of Revisions | 2 | 3 | 5 |
Number of Pages | 5 | 10 | 15 |
Design Customization | - | ||
Content Upload | - | - | - |
Responsive Design | |||
Source Code |
About Javier Fernando
Full-Stack Engineer | Nest.js Next.js, TypeScript | SaaS in Production
Merida, Mexico - 5:11 pm local time
Most apps look fine in a demo and start cracking the moment real traffic arrives. Slow pages, shaky security, data that breaks mid migration. That is not a maintenance problem, it is an engineering one, and it is what I solve.
The clearest proof is my own product. Lab2Next is a clinical lab platform I designed, built, and still maintain for real users today: patient registration, quality control workflows, digital results, and role based access. Carrying a product all the way to production and keeping it alive taught me to prevent problems instead of patching them.
How I can help you:
✓ Build a complete product from idea to launch, from the architecture to the interface to getting it live.
✓ Build security into the foundation instead of bolting it on later.
✓ Automate the manual work that slows your team down, so repetitive processes run on their own.
✓ Migrate data and modernize old systems cleanly, with no downtime and nothing broken along the way.
I've worked across fintech, regulated lending, enterprise data, e commerce, and healthcare. Different industries, same instinct: find the weak point first, then build something that holds. I own the work from the first conversation to long after launch, and I keep a high bar the whole way.
Based in Mérida, working remote only.
If you're building something that has to ship and keep working, send me a message and tell me what you're building.
Steps for completing your project
After purchasing the project, send requirements so Javier Fernando can start the project.
Delivery time starts when Javier Fernando receives requirements from you.
Javier Fernando works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & Scoping
We align on your product vision, user flows, and feature set. I deliver a scope doc and technical architecture before a line of code is written.
Design & Prototyping
I design all UI screens in Figma — components, responsive layouts, and user flows — so you can validate look and feel before development starts.