FFSTACK — Freelance Fullstack Development
FFSTACK

Freelance Fullstack Developer

Your next product, built to grow.

Custom websites and web apps that turn your idea into something people actually use. No templates, no fluff.

No commitment. We walk away with clarity on viability, scope, and next steps.

Where are you at?

Need to launch now

MVP in 6–8 weeks, ready for real users

Website doesn't convert

Conversion-focused redesign + stack that scales

Technology blocks your growth

Clean architecture, robust APIs, zero tech debt

No matter which one — there's a solution for every stage

How we work together

01

Discovery call (30 min)

I understand your business, goals, and constraints. No commitment.

02

Fixed written proposal

Scope, timeline, milestones, and closed price. No surprises.

03

Weekly visible deliveries

You see real progress every week. Early feedback, no black box.

04

Launch + 30 days support

We go live, monitor, and adjust. You walk away autonomous.

What I build

Each service has a real case you can explore in detail.

Marketplaces and multi-vendor platforms

Split payments, seller storefronts, admin panels. Stack: Next.js, Firebase, Tauri.

See Kic Market case →

Custom e-commerce and transactional products

Integrated checkout, webhooks, management panels, automations. Stack: React, Firebase, MercadoPago.

See Lagom Philosophy case →

Fintech platforms and complex logic products

Financial logic in Cloud Functions, obsessive performance, security. Stack: Next.js, Firebase, Cloud Functions.

See Rentive Capital case →

This is for you if…

✓ Fits you

  • You want a technical partner who thinks in business, not just code
  • You value clear communication and visible weekly deliveries
  • You need technology that scales, not blocks

✗ Not for you

  • You want the cheapest website possible, yesterday
  • You need a task executor without own judgment
  • You need 10 meetings before deciding button color

What clients say after launch

"Francisco understood the business before the code. Delivered a functional marketplace in weeks, not months."

Owner, Kic Market

Local marketplace Bahía Blanca

"The Tauri admin panel saves us hours every week. We manage everything from one place."

Founder, LevelUp

Multi-platform gaming e-commerce

"Speed Insights score went from 50 to 80. The platform handles real load without crashing."

CTO, Rentive Capital

Investment platform 25+ users

Frequently asked questions

How much does a project cost?
It depends on the type of project: simple website from USD 250, corporate site from USD 500, e-commerce from USD 900, and custom system from USD 1,500. Try the calculator below for an instant reference; the final price is closed in writing by scope.
How long until it's ready?
Simple MVP: 6–8 weeks. Full platform: 3–4 months. Real timeline in the proposal, not vague estimates.
What if scope changes mid-project?
We assess impact, agree in writing, and adjust price/dates before continuing. No invisible work.
Do you provide maintenance after launch?
Every project includes 30 days of post-launch support. After that I offer a monthly maintenance and infrastructure management plan, calculated as a percentage of the project by type (3–6% monthly, with a minimum). Cloud costs are always billed separately, in the client's name.
Do you work with my current stack or impose yours?
I adapt if your stack makes technical sense. If not, I propose justified migration. The call is always yours.

Ready to build what you need?

30 minutes, no commitment, we walk away with clarity on viability, scope, and next steps.

Let's turn your idea into your next launch.

Tell me what you're building, what's getting in the way, and where you want to go. I'll help you find a practical path from idea to launch.