Contract · via IDS · Dec 2025 — May 2026 · NDA
Walmart
Flutter mobile app in production · LATAM
Stack
- Flutter
- Dart
- VTEX
- SauceLabs
Available · reply within < 24 h
Does your business need custom software?
I'm Jonathan, a full-stack developer in Costa Rica. Mobile apps, websites and custom systems for companies, founders and entrepreneurs. Message me and let's get started.
4+
years in production
12+
projects delivered
1
SaaS of my own
2-14wk
typical delivery
Working / have worked with
Walmart via IDS
Banco de Costa Rica
PriceSmart
ACDEMIC
Living Stone Contractors
Professional Construction
NetFic Solutions
Walmart via IDS
Banco de Costa Rica
PriceSmart
ACDEMIC
Living Stone Contractors
Professional Construction
NetFic Solutions
Paths
Three questions.
Three paths.
Three kinds of clients, three ways to start. If one of these sounds familiar, you already know where we begin.
01
Does your business need custom software?
Management systems, dashboards, integrations, internal apps. I build the digital tool your team uses every day.
Let's start with a call
02
Is your current landing page taking over a month to close deals?
A professional site in 2-3 weeks. Design, code, basic SEO and deploy. You maintain it or I do — your call.
Let's talk on WhatsApp
03
Want a mobile app but not sure where to start?
Flutter apps in production for Walmart, BCR and PriceSmart. I know what breaks, what lasts and what scales. We start with a conversation.
Let's talk about the app
Recent work
My own products.
Enterprise contracts.
A selection of projects. Those marked with an arrow have a case study; the rest are mentioned under NDA.
Founder · active
ACDEMIC
EdTech SaaS for public school teachers in Costa Rica
Stack
- NestJS
- Angular
- PostgreSQL
- Flutter
Freelance · active · dev + brand
Professional Construction
Website and digital presence for a roofing and remodeling contractor in the US
Stack
- Astro 5
- TypeScript
- Tailwind
- Render
Freelance · active · dev + brand
Living Stone Contractors
Website + admin panel to manage content
Stack
- Astro
- Express
- PostgreSQL
- Cloudinary
Dev lead · active
NetFic Solutions
Technology services company · infra + dev
Stack
- Astro 5
- TypeScript
- Tailwind
- Render
Contract · 2023 — 2025 · NDA
Banco de Costa Rica
Mobile banking app redesign
Stack
- Flutter
- Dart
- Azure DevOps
- AWS
Work in progress
Live demos Proposal · in progress
Sun State Roofing
A 3D roof coating demo with a thermal camera view and their real readings, for a roofing contractor in Florida.
- Astro
- Three.js
- WebGL
- Vercel
Proposal · in progress
844Roofing.com
A 3D roof showroom with real catalog colors and a storm timelapse, for a roofing contractor in Florida.
- Astro
- Three.js
- WebGL
- Vercel
Proposal · in progress
AJ Flooring
Redesign with an interactive 3D showroom for a commercial flooring contractor in Florida.
- Astro
- Three.js
- GSAP
- Vercel
Proposal · in progress
Sandy Garden
Website redesign and digital loyalty card for a children's sensory playground in Costa Rica.
- Astro
- Three.js
- Canvas 2D
- Vercel
How I work
A process that respects
your time and your money.
Four steps. Zero surprises. Before we start you know what gets delivered, when, and what it costs. After that, optional maintenance.
- 01
Conversation
Before touching code, we understand what your business needs. One call to learn the real problem: what you solve, for whom, and what counts as success. If I'm not the right fit, I'll tell you right away.
- 02
Prototype
A clickable version fast, before investing weeks. Mockups or a working prototype to validate direction. We iterate until the what is clear. This saves costly changes later.
- 03
Development
I show you progress, not just the final result. Visible, steady updates throughout. Your feedback at any time. If something falls outside scope, we talk about it before moving on.
- 04
Delivery + support
A product in production, documented, and 100% yours. Deploy, documentation and a technical walkthrough. The code is yours from day one. Post-delivery support in the Grow and Scale packages.
About me
Four years. A dozen products. A SaaS of my own.
Full-stack developer with 4+ years in production. Flutter apps for Walmart, BCR and PriceSmart. Technical founder of ACDEMIC, my own EdTech SaaS for public school teachers.
I work between two worlds: enterprise discipline (NDAs, code reviews, coordinated releases) and the freedom of building a product from scratch. Each side made me better at the other.
Next step
Let's talk
about your project.
I reply within one business day. For something quick, WhatsApp. For something longer, email. Reach out anytime.