2023ERP/CRM
SIGE - Resource Management System
Comprehensive ERP/CRM system for equipment inventory management, ticket tracking and technological solutions.
Laravel · MySQL · Bootstrap · CSS
Live
Yohan Chayan
Full-Stack Developer & Software Engineer
5 yrs building · 8 systems in production · English and Spanish
Specialized in full-stack development with Laravel and Vue.js, creating scalable web solutions and robust APIs for companies and startups.
What I do
I build and run business systems end to end — database, business rules, interface, deployment. Eight are in production for five businesses, and I still maintain them. Laravel and Vue are what I reach for; the capabilities below are what I have actually shipped with, not a rating of myself.
- 8
- Completed Projects
- 5
- Years of Experience
- 5
- Happy Clients
Client work
Systems running in production
Built for a client, handed over, and still in daily use. Each card names what the system had to handle rather than what it was built with.
2023TCE - Student Management Platform Administrative system for student and staff management with academic process tracking and notifications.CRM 2022FrutiOro - Business Management Complete business management system with SAT integration, payment tracking and reports.ERP/CRM 2023GoCo - Marketplace Integration Comprehensive management system for multiple marketplace connections and order processing.E-commerce 2022Juniper Tours - Booking System Travel booking system with product management, quotes and payment scheduling.ERP/CRM
YHN Dev Side
The studio's own products
Built for the studio rather than for a client — which is why some are still in development and say so.
Comunidad2023
YHN Community Platform
Live
Platform designed for developers and community professionals, to facilitate collaboration dynamics and project tracking.
- Laravel
- Vue.js
- MySQL
- Tailwind CSS
Redes Sociales2024
YHN LinkUnity
In Development
Content management system for social networks with scheduling and analytics.
- Laravel
- Vue.js
- MySQL
- REST APIs
- GraphQL
Redes Sociales2024
Univenty
In Development
Commercial management system for physical and marketplace sales administration.
- Laravel
- Vue.js
- MySQL
- APIs
Educación2026
Arcadia
Live
Step-by-step learning guides. Someone says what they want to learn; they get a guide built from the best free videos, ordered into stages with a goal each, to follow from one link on a phone or a laptop. Versioned guides, an editor for the owner, and progress and notes for each reader.
- Laravel
- Vue.js
- Inertia
- MySQL
- Tailwind CSS
Experiments
Things I built to think with
Personal projects, not client work and not studio products. They exist because I wanted to see something move.
Prey & Predator
An agent simulation — population dynamics emerging from a handful of local rules, with pathfinding over a graph.
Chayix
A 2D game: sprites, collision and level design. The one thing here not built on the web stack.
Capabilities
What I can take on
I own a system from the schema to the server it runs on. These are the parts of that job.
Backend & business logic
Domain rules, APIs, background jobs, authentication and role-based access.
- Laravel
- PHP
- REST
- Queues
- Pest
Interfaces
Admin panels used all day, and public pages that load fast and rank.
- Vue 3
- TypeScript
- JavaScript
- Inertia
- Pinia
- Tailwind CSS
- Vite
Integrations
Tax authority (SAT), SOAP services, marketplaces, payment gateways and email.
- SAT
- SOAP
- REST
- OAuth
- Laravel Mail
Data modelling
Schemas that survive years of real use, safe migrations and business reporting.
- MySQL
- Eloquent
- SQL
Deployment & operations
Shipping to production and keeping it running long after launch.
- Docker
- Linux
- DigitalOcean
- Git
- SSR
AI inside the product
Assistants on your own data, document extraction and agents — with permissions and audit.
- MCP
- RAG
- Agents
- Claude
- OpenAI
How I work
- Tested before it ships
- Pest tests on the paths that move money, data or access.
- Handed over in writing
- Decisions documented in the repo, so no one depends on me.
- Spanish and English
- Clients, teams and interfaces in either language.
- Supported after launch
- I stay on the systems I build.
Also used when a project calls for it: Node.js · GraphQL · Bootstrap · jQuery
Get in touch
The fastest route is email. I read everything and reply to anything specific.
- Email chayan.yohan.1999@gmail.com
- GitHub github.com/yohanchayan
- LinkedIn linkedin.com/in/yohanchayan