01
Custom Software Development
Web platforms and internal tools built around how your business actually runs — from first spec to production.
MARIE FA — SENIOR FULL-STACK DEVELOPER
Your business has a problem.I build the software that solves it.
Marie Fa / Senior full-stack developer
30 years of experience in web and software development, a process now supercharged by AI. Custom websites and platforms, automation and urgent rescues — delivered by one senior developer who owns the outcome.
30 yrs
building software
EN · FR · ES
working languages
- Custom websites & platforms
- AI integration
- Automation
- Urgent rescues
mariefa.com
AI makes development faster. Thirty years of experience make the difference.
SERVICES
Senior experience, AI speed, and zero hassle.
02
AI Integration & Business Automation
Put AI where it saves real hours: workflows, data pipelines and assistants wired into the systems you already use.
03
Urgent Projects & Technical Delivery
A deadline at risk or a project stalled? I step in, stabilize, and ship.
FAQ
Sound familiar?
Our project is late and the developer stopped answering. Can you take over?
Yes, it's one of my specialties. I assess the code within a few days, stabilize what needs it, then ship. You quickly know exactly where you stand.
We still do a lot by hand, in spreadsheets or over email.
That's often where the biggest gains are. I build a simple tool around the way you actually work, so the calculations, reports and follow-ups happen for you.
We pay too much commission to booking or sales platforms.
You can sell and take bookings directly on your own site, with online payment and no middleman. I built HolaOlas for exactly that.
We know we should be using AI, but where do we start?
Not with a gadget. Together we find the tasks that cost you the most time, and I plug AI in where it truly pays off.
Our website brings in almost no clients.
A website has to be found, understood and convincing, including by the AI assistants your clients increasingly rely on. I build or rebuild it with that in mind.
We need a website or platform in several languages.
I work in English, French and Spanish, and I build multilingual platforms from day one, not translated as an afterthought.
How much does it cost, and how long does it take?
It depends on the project, but you get a clear number before we start. A small tool can ship in a few weeks. Thanks to AI, I deliver faster than a traditional team, with the same rigor.
Is one developer really enough for a large-scale project?
Yes. Complete platforms with user accounts, payments, databases and multiple languages: that's what I deliver, and my work is the proof. You get one senior point of contact, from the first call to launch, with no middlemen and nothing lost in translation.
SELECTED WORK
Platforms in production.
CLIENT WEBSITE · AI STORYTELLING PLATFORM
Nura Studios
For this Silicon Valley company building an AI storytelling platform for film, series and animation, I developed the entire website in close collaboration with their design team. Video content, performance, and a structure built to be understood by search engines and AI agents alike.
- Next.js
- React
- Schema.org
EDUCATION PLATFORM · ONLINE CAMPUS
Navega Bacalar
A complete platform for a sailing school in Bacalar, Mexico: in-person classes plus an online campus. I built everything end to end.
- Interactive sailing simulator: set the wind, steer the boat, trim the sails, see speed and efficiency live, then tack and gybe
- Online campus with courses, tests and user accounts
- Class booking and Stripe payments
- Blog and structured content · fully trilingual (ES, EN, FR)
- Next.js
- React
- Supabase
- Stripe
- Vercel
- Interactive simulator
SAAS · WRITING & PUBLISHING
LATRAME / The Foundry
A complete platform for authors: a writing and worldbuilding studio in the browser, a bookstore, and a public author website. I designed and built the whole SaaS, from database to interface.
- Tested past 600,000 words with no slowdown
- Autosave, version history, works offline
- Live co-authoring and read-only beta-reader links
- EPUB, PDF and manuscript exports · interface in EN, FR, ES
- Next.js
- React
- TypeScript
- Supabase
- Vercel
- Stripe
- Offline-ready PWA
DATA PLATFORM · MARKET RESEARCH
TPDI · ARI
Two structural indices for global tourism markets. TPDI measures how dependent a market is on booking platforms. ARI measures how ready it is to be found by AI agents. Measured market by market.
- 280 real analyses across 32 countries and 61 cities
- 6,855 tourism actors and booking signals classified
- Interactive world map with filters
- Shareable charts by country, city, activity and criterion
- Cumulative index, updated with each publication · EN and FR
- Next.js
- React
- Supabase
- Data visualization
- Interactive map
DIRECTORY · BUILT FOR AI AGENTS
Roots Travel
A global directory of tourism operators you can book directly, with no OTAs and no intermediaries. It is built first for AI travel agents, so they find the real operators and not just the platforms.
- 970 direct operators across 280 markets, 32 countries and 61 cities
- Search by country, or browse by category, country and city
- Structured, machine-readable data (Schema.org) and an API
- Fed by the TPDI analyses; each verified operator gets an AI-readiness score
- Schema.org
- Machine-readable data
- Public API
- TPDI data pipeline
SAAS · DIRECT BOOKING
HolaOlas
A direct-booking platform for hotels and tour operators: zero commission, no middleman. I designed and built it end to end.
- Room and experience selection, with photos and amenities
- Pay a deposit or in full at checkout
- Cancellation policy per listing
- One page per experience, or all of them on a single page
- Next.js
- React
- Supabase
- Stripe
- Vercel
- Multi-currency
E-COMMERCE · PUBLISHING
Matteo, the series
The website and online store for a children's book series. I built the entire site, with its own e-commerce: no Shopify, no monthly platform fees.
- Custom store: print books, digital editions and printable PDFs
- Its own admin dashboard to manage books, orders and content
- Custom API integration for discounted shipping rates
- Cart with product suggestions · French and English titles
- Next.js
- React
- Supabase
- Vercel
- Custom e-commerce
- Shipping API
TOURISM · MULTILINGUAL WEBSITE
Adorable Sailing
The showcase website for my own sailing business in Bacalar, Mexico. A hand-illustrated identity, excursions in four languages, and booking connected directly to HolaOlas.
- Custom illustrated design and photo galleries
- Site in EN, FR, ES and DE
- Excursions bookable directly, zero commission
- Multilingual
- HolaOlas integration
- Direct booking
WEB APP · PARAMETRIC PATTERN ENGINE
Farrow de Pérez
A knitting pattern generator. Pick a garment, a yarn and your measurements: it calculates every stitch and writes the complete pattern, in every size. Complex math, turned into simple instructions.
- Sweaters, cardigans and tanks, several constructions each
- Women's, men's, children's and baby sizes, XS to 5X or custom
- Measured schematic and interactive 3D preview on a dress form
- Step-by-step knitting mode with row counter · print or PDF
- Next.js
- React
- TypeScript
- Vercel
- In-browser 3D
- Parametric engine
SHOWCASE WEBSITE · WELLNESS
Yaya Yoga
A warm, simple showcase website for a yoga teacher: her approach, her tools and her retreats in Québec and Costa Rica, presented the way she teaches.
- Brand-aligned design built around her photography
- Retreat pages with dates, locations and details
- Easy for her to keep up to date
- Showcase site
- Responsive
- SEO
CUSTOM TOOL · NONPROFIT REPORTING
Fondation Un souffle et des ailes
A small custom tool that lets a foundation create its annual financial reports, beautifully. No more wrestling with spreadsheets: they fill in the numbers and get a clean, branded report.
- Editable income statement with automatic totals
- Add lines or sections exactly where they belong
- One report per year, saved and reopened anytime
- Branded, print-ready layout with the foundation’s artwork
- Custom tool
- Database-backed
- Print-ready
Client recommendations on LinkedIn →
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CONTACT
When it has to be done right and done fast, call me.
Have software in mind, a website to build, or a tool that no longer does the job? Tell me about your project: I'll get back to you within 24 hours.