Where are you right now?
Four options per family. Pick the closest one: the result can be adjusted afterwards.
01
Web analytics
Visits arrive. Why they leave can be measured too.
02
Dashboard
The numbers exist: they can be seen together in one picture.
03
Data extraction
Your data is in there. It has to come out.
04
CRM implementation
A CRM where everyone logs things the same way, with the fields your team agrees on.
01
Operations optimization
The process works. It costs twice what it should.
02
Logistics and WMS
The warehouse records what comes in. What goes out can reconcile just as well.
03
Inventory
The system says 40 and the shelf has 32: that can be reconciled.
04
Open source
You may be paying for something that is already free.
01
E-commerce
A store is an operation that sells every day, more than a catalog.
02
Web development
Your website can explain what you do, to whom and why you.
03
Apps
A spreadsheet holds your business up: that can become an app of your own.
04
Open source implementation
Stand the open source base up and adapt it to your operation.
Visits arrive. I can tell you why they leave.
I instrument what you already have —and set it up where it pays off— and we agree on which metric decides something. A one-page report a month, with what really moves decisions.
GA4 + PostHogOn top of the site you already have, keeping what already works.
1 decision per metricEvery indicator in the report changes one concrete decision.
🟡 Real work · in preparation Analytics instrumented in production projects for years; the public case is in preparation and I will walk you through it in the conversation.
Or look at Dashboard Data extraction E-commerce
The numbers exist. Now they read together.
I connect the sources you already use —ERP, CRM, spreadsheets— and build the dashboard that answers your operation questions. I start with the three you decide on every week.
Power BI or MetabaseDepending on where your data lives and who maintains it afterwards.
Eight indicators at mostThe ones that really move your decisions, on the first screen.
🟡 Real work · in preparation Dashboards built for real operations; those clients’ data gets published when they authorize it.
Or look at Data extraction CRM implementation Web analytics
Your data is in there. It has to come out.
Extract, clean and leave the data somewhere you can query it, on the system you already have and with the tools you already use.
Custom ETLAgainst your current database, respecting what already works.
Client repositoryThe code and the documentation stay inside your organization.
🟡 Real work · in preparation Integrating systems is my daily work; the public case is in preparation.
Or look at Dashboard Operations optimization Open source
A CRM where everyone logs things the same way.
We define the pipeline and the fields with you —before touching the database— and I implement it on open source or on the CRM you already have. I install, adapt and train your team.
Open source or your CRMOdoo, EspoCRM or whatever you already pay for. The decision is yours.
Fields agreed up frontThe pipeline gets defined with the people who use it every day.
⚪ First case open I show you the whole method, field by field, and you decide with that information in front of you.
Or look at Data extraction Dashboard Apps
The process works. It costs twice what it should.
I measure the process step by step, with the person who runs it and your operation data in front of us. Then the repetitive stretch gets automated and that time goes back to your team.
One-week diagnosticThe process measured: where time goes in and where it gets lost.
Automate the expensive stretchOne well-chosen stretch, with impact visible in weeks.
⚪ First case open The method is ready —measure, automate the expensive stretch, measure again— and we apply it to your operation.
Or look at Logistics and WMS Inventory Data extraction
The warehouse records what comes in. What goes out can reconcile just as well.
I implement and adapt an open source WMS to your real operation: inbound, outbound, returns and counts in the same system, with traceability per movement.
Open source WMSInstalled and adapted to your warehouse, with the open base as the starting point.
Traceability per movementEvery movement keeps a date, a user and a supporting document.
🟡 Real work · to verify Operations that move inventory, with the case in preparation while the client authorization arrives.
Or look at Inventory Operations optimization Apps
Reconcile what the system says with what is on the shelf.
I look for the root cause of the mismatch —where the chain breaks between what gets counted and what gets recorded— and then I build the control that catches it in time.
Root cause firstUnderstand the mismatch first and choose the right tool afterwards.
Deviation alertA notice the moment the difference crosses the threshold, before the month closes.
⚪ First case open The order is clear —root cause, control, tool— and we walk it with your inventory.
Or look at Logistics and WMS Operations optimization Dashboard
You may be paying for something that is already free.
I review which licenses you pay for, what each one is used for and which open tools cover the same ground. The decision is yours; the change is mine to make.
License auditWhat you pay today, what it is used for and which open tool covers the same ground.
Change piece by pieceReplaced stretch by stretch, with your operation running.
⚪ First case open The method is straight —audit, compare, change piece by piece— and we apply it with you.
Or look at Open source implementation Apps Operations optimization
A store is an operation that sells every day, more than a catalog.
E-commerce work in production that you can check: a product store on WooCommerce and a custom wallet. Both are published, with their client and their year, in Projects.
Two published storesA product store on WooCommerce and a custom wallet.
Client, year and linkEach store opens from the project list and you check it yourself.
🟢 Documented case Both stores are published and open from Projects, with their client and their year in plain sight.
Or look at Apps Web development Web analytics
A website that explains what you do, to whom and why you.
The message first: what you sell, to whom and why you. Then the build, with whoever will maintain it in mind from day one.
WordPress or Next.jsDepending on who maintains it and what they need the site to do.
301 redirects includedWhat already ranked keeps ranking after the change.
🟡 Real work · to verify Sites in production built and maintained for years; the client name arrives when their authorization arrives.
Or look at E-commerce Web analytics Apps
If a spreadsheet holds your business up, you have a risk.
Real case: Armacancha. Soccer pitch bookings, leagues and tournaments living in an app of its own, with three different entry points on the same calendar: pitch owner, captain and player.
Real case: ArmacanchaBookings, seasons, brackets and player stats in one system.
Public product in 2026It opens at armacancha.com and works as an app on your phone.
🟢 Documented case My own product, in production and open to the public: you open armacancha.com and watch the system working.
Or look at Open source implementation Logistics and WMS E-commerce
Stand the open source base up and adapt it to your operation.
I install, adapt and train your team on an open tool that already solves most of the problem. Whatever is needed gets written on top, with the repository inside your company.
Install, adapt, trainYour team is operating the tool from day one.
Repository inside your companyCode and documentation inside your organization from day one.
⚪ First case open The method and the code are the same ones I use in my own projects, ready for your operation.
Or look at Open source Apps Logistics and WMS
Understand first. Decide afterwards.
10+ years building production software for fintech, e-commerce and data platforms in Central America. The output is an ordered list of what to attack first.
10+ years in productionFintech, e-commerce and data platforms in Central America.
Prioritized roadmapWhat to attack first, with what and in how long. Ordered by impact.
🟢 Verifiable track record Here the proof is the track record: ten years of software in production, in the industries where I work.
Or look at Dashboard Operations optimization See all 6 services
The full path: family → solution → your CTA. If you want to fine-tune the result, go back and change one answer: it is two questions.
Who answers you
Direct contact: the person who quotes is the person who later builds, and who answers you when something breaks on a Friday.
- 10+ years building production software: fintech, e-commerce and data platforms.
- One single engineer per project. Direct contact from start to finish, with the same person who writes the code.
- 7 projects published with client, year and platform, each one with its link. The documented case lives in Work.
Services
Six services. All of them start the same way: understand before building.
Pick the service that looks most like your problem: each one explains what it includes, how we work and with what scope.
01
Analytics and data
Know what is really happening: what gets visited, what sells and where the margin is.
02
Process automation
Automate the repetitive manual work and give that time back to your team.
03
Custom apps
Software of your own for the part of the operation that asks for more than a spreadsheet.
04
E-commerce
Catalog, cart and online payment, with inventory and orders up to date.
05
Web development
The message first —what you sell and to whom—; then WordPress or Next.js.
06
Consulting
When you are defining what you need, starting here is the cheapest thing you can do.
Documented case
Armacancha: pitches, leagues and football tournaments living in one system.
A sports complex opens its pitches for booking, a neighbourhood league keeps its standings and a weekend tournament is put together the same day. They are three businesses with the same need, and all three fit in one platform.
I built it around three ways in, depending on who arrives: the pitch owner filling the calendar, the captain putting the team together and the player who wants a profile with statistics. Each one sees their own part, and all of them look at the same calendar.
🟢 Documented A product of my own, in production and open to the public. You open it at armacancha.com and see the system at work; usage figures come with a date and a sample when I publish them.
1 · The business
Bookings and occupancy
Calendar of every pitch, who booked and how much the month billed.
2 · The competition
Seasons and brackets
Leagues and tournaments with standings, top scorers and the bracket up to date.
3 · The game
Matches and statistics
Goals, assists and cards in the permanent profile of every player.
Details
- Product
Armacancha - What it is
Pitch bookings, leagues and football tournaments, with three roles: pitch owner, captain and player. - My role
Product, design and development, end to end. - Stack
A web application with Next.js on the server, installable on the phone and in Spanish and English. - Status
In production since 2026. armacancha.com
How I work
Five steps. The first one is free and the third is where almost everyone goes quiet.
Number 3 is the proposal: what is included, what it costs and when. You decide with the figure in front of you.
01
One-hour conversation
You tell me what is happening and I tell you how I would approach it. One hour, free.
02
Short diagnostic
We look at data and process, evidence before opinions. The scope comes out of here, in writing.
03
Proposal with a locked scope
What it includes, what it costs and in how long, with the scope locked in writing.
04
Building in releases
You see progress every week and decide on something that really works.
05
Handover
Documentation, training and the repository is yours. You decide whether I continue with the next stretch or your team carries on on their own.
Who Gianko is
A single engineer, accountable end to end.
I am Giancarlos. You deal directly with the person who writes the code: faster for you, and one single owner when something needs adjusting.
I work with companies in Costa Rica and the region, remotely. On large projects I bring in people I already know, and I remain the one accountable to you.
And there are criteria I apply every time. I would rather you know them before we start.
How I work
- I choose the tool by the problem: when an open solution solves the same thing, I propose it open.
- Everything goes through my hands: when a project asks for more people, I bring in people I already know and I stay the one accountable.
- I understand the problem end to end before taking it on: when it pays off, we start with a diagnostic that leaves the road clear.
- Every figure I publish carries a screenshot, a date and a sample.
- The cases I publish can be opened: Armacancha is public and you can see it working.
Engagements
Three ways to work together. All three start by understanding your case.
Every project has its own scope and its own figure: two companies with the same symptom are living different situations. Quoting is free and the budget always goes in writing.
01
Fixed project
Fixed scope, fixed price and a delivery date. For when the problem is clear and needs finishing.
02
Monthly support
Hours a month for maintenance, improvements and decisions as they come up. You can stop it whenever you like.
03
One-off consulting
A working session on your situation and a prioritized roadmap. You pay once and take it with you.
Proof
Three things you can check today.
Here every claim can be checked: what you see is what there is, with its source and its date.
When a client authorizes me to publish their testimonial, it will appear here exactly as they said it. Until then, this section shows you what you can verify today.
🟢 Verifiable Armacancha. In production: soccer pitch bookings, leagues and tournaments. It is open at armacancha.com and you look at it right now.
🟢 Verifiable 10+ years of software in production. Fintech, e-commerce and data platforms. I can tell you what I built at each stage.
🟢 Verifiable The code stays in your repository. If we ever take different paths, you keep the system, its documentation and its code.
Straight questions
What people always ask me before we start.
Do you work alone?
Yes. I do the diagnostic, the proposal and the code myself. On large projects I bring in people I already know, and I am the one accountable, in direct contact.
What does a project cost?
It depends on the scope, and the scope comes out of the diagnostic. Every project has its own scope and its own figure: I would rather give you a real number after understanding your case.
How long does it take?
It depends on the problem. A dashboard is weeks; a store-and-orders ecosystem is months. The proposal carries a concrete date.
Do you work with clients outside Costa Rica?
Yes, remotely and in Spanish. Most of my clients are in Central America and the time zone plays in favor of working this way.
What if I am still defining what I need?
That is the most common case. That is what consulting is for: one working session and you come out with a prioritized roadmap, with the problem already named.
Do I get the code at the end?
Yes. The repository and the documentation stay in your organization, in your account. The system is yours end to end.
What technology do you use?
Whatever holds your operation up: WordPress or Next.js for sites, open source solutions adapted for the operational side, and code of my own when it is really needed. The tool is chosen by the problem. I also work with Laravel, Ionic, TypeScript, Angular and React Native, so I adapt to whatever each project asks for.
Can I start with something small?
Yes, and many times that is the best option: a diagnostic or one specific stretch. I prefer a first step that is short and well measured.
Start
Tell me the problem. I will tell you if I can solve it and what I would do.
Filling this in takes two minutes and the person who will do the work is the one who answers.
- A first read of your case, in writing.
- My honest recommendation: how I would approach it and what I would do first.
- The next conversation, with a proposed date.
