Cristian Pérez
I design them, build them and explain how they work, without the jargon.
Recent work
Drag the strip to look around, or tap a site to visit it.
Free check
Paste your address and see in seconds the basics many sites miss.
Who's behind it
I build complete systems, start to finish. Projects that need a team I take on with carpy, my software studio.
The right tech for each problem · React, Laravel, Python
Security first · I come from cybersecurity and check where your data goes
I reached 35K+ followers and 2.5M likes on TikTok by talking to people the way they talk. I put that same voice into your business's content.
Visual identity · logo, colours, fonts
Content for social media · scripts and editing that hold attention
What's a Stand?In the manga JoJo's Bizarre Adventure, a Stand is someone's spirit turned into a power, with its own stats card. This one is mine.
Stand
Stand user: Cristian Pérez
Builds software and websites that businesses put to work, and content that goes viral. Checks the locks before handing over the keys.
On GitHub
Every gold column is a day I pushed code. Spin the board and hit a column to see the day.
What I build
Real cases
What each business needed, what I built, and what changed.
carpy · My software studio · co-founder
Result
Every project ships with the code in a repository in the client's name from day one, plus a manual to run it.
The FCV kept its information assets in an Excel matrix: no access control per area and no way to see the risks across the whole foundation at once.
A web app (Java, Spring Boot and MariaDB) where each area registers its assets and the app works out their classification. It has per-area access, bulk loading from the original Excel, an approval flow, a dashboard and an audit log nobody can edit.
Running in production at the FCV, with a strict CSP, CSRF protection and automated permission tests.
The cybersecurity team's documentation lived in a stock MediaWiki, with a search that missed pages over a typo or a missing accent.
I wrote a MediaWiki extension (PHP, JavaScript and CSS) with a new theme and dark mode. The search ignores accents and capitals, tolerates typos, looks inside the articles and opens with Ctrl+K.
Live in production since September 2026. Rolling back takes three commands.
The FCV had hundreds of scanned records. Finding a single one meant opening PDFs one by one.
A system that reads the scans with AI, pulls out name, ID number and site, and builds a search tool. Doubtful reads get flagged for a person to check.
What used to mean opening PDFs one by one is now typing an ID number.
Playing trivia with friends usually means an app to install, an account to create and a server somewhere.
A wheel picks the category, then come 10 timed questions with points for streaks. Up to 10 players join from their phones with a code, with a live scoreboard and chat. Mayhem mode adds power-ups, like Mario Kart's. It is React, TypeScript and WebRTC: the room creator's browser runs the match, with no backend.
It plays in the browser with nothing to download and no account, in English and Spanish.
Tour dates are scattered across label posts, ticket sites and fan accounts, and none of them tells you how far a show is from where you live.
A 3D globe where ten groups stand as chibis on their next tour stop, each with a countdown and the distance to you. It has alerts for new dates and a show-night mode. It is plain JavaScript, and a GitHub Action refreshes the data every 15 minutes.
It only uses official schedules and posts, at city level, with no tracking of people. It installs as an app on your phone.
Plans
Starting prices. The final price is agreed in writing before work begins.
So people find you when they search, even if they've never seen your link.
From$520USD
2 to 3 weeks
A clean, fast page that presents your business and brings in messages.
From$250USD
Ready in 1 week
So people find you when they search, even if they've never seen your link.
From$520USD
2 to 3 weeks
Change prices, photos and products yourself, whenever you want.
From$890USD
3 to 5 weeks
Changes until you approve. We adjust the design until you're happy, before anything goes live.
30 days of free support. If something breaks in the first month after launch, I fix it at no cost.
10% for referrals. Send me a business that hires me and get 10% off your next project or change.
App or custom system
Automations, internal systems, AI that reads your documents. First I get to know the problem, then I give you a fixed price.
Brand kit
Logo, colours, fonts and templates for your social media. From $150, or $110 added to any plan. Social videos are quoted by volume.
They go in your name and on your card, paid directly to the provider. I help you set them up and leave usage alerts on.
Already have a website? Full review for $75, deducted if we then build yours together. Or try the free basic checkPrices in US dollars. For businesses in Colombia I quote in pesos.
Questions
From $250 for a landing page, $520 with SEO for Google and AI, and $890 with an admin panel. Apps and custom systems are quoted separately. The final price is agreed before I start.
A landing page, about 1 week. A full website, 2 to 3 weeks; with an admin panel, 3 to 5. It goes faster if you already have your photos and texts.
Your logo, photos of your business and an idea of what you sell. If you don't have texts, we write them together.
More and more people ask ChatGPT or Google "where can I find X in my city?". I prepare your site so AI understands it and can recommend you. Nobody can guarantee first place.
No. They are paid directly to the provider, in your name and on your card, so the website is yours and you don't depend on me to keep it online. I help you pick and set them up, and I leave alerts on in case usage goes up.
Yes. I'm based in Bucaramanga and work with businesses across Colombia and abroad, in Spanish or English, over WhatsApp and video calls.
Question not here?
Ask me on WhatsApp. I usually reply the same day.
