Open to workDeveloper and IT / Carolina, PR

I built the software a store runs on.

Python · JavaScript · Odoo · Linux · Infrastructure

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Explore the work
gianlexis ~ profile
$ whoami
gianlexis, developer + IT

$ cat stack.txt
python  javascript  sql  odoo
node  react  docker  linux

$ cat now.txt
IT technician at a supermarket
building Mega Fresh Ad Hub
learning on a Proxmox homelab

$ status
● open to work
10,000+
Products managed
Clean, normalized records
5+
Years in the field
Working in IT since 2021
2
Government IT internships
DDEC and OGP
3
Certifications
Microsoft and Google
Projects

Things I've built and run.

01 / 04
Systems$ docker compose up -d
nginx · api · admin · tunnel
Signage platform● In production

Mega Fresh Ad Hub

Digital signage for the Mega Fresh supermarket chain. Staff manage playlists, menu boards and promo slides from a web app, and Samsung TVs pair with a six-digit code and play the content fullscreen all day. It includes a promo card maker that removes photo backgrounds and prints cut-ready sheets, a cashier panel for the daily menu, and live updates that reach the screens within seconds. Backend tests and CI run on every push.

  • Node.js
  • React
  • SQLite
  • Docker
  • nginx
Private repository. Walkthrough on request.
Systems$ tailscale status
proxmox · pi-hole · caddy · odoo
Home server● Ongoing

HomeLab

An always-on server on a spare laptop, built to learn the infrastructure side. Proxmox VE runs two virtual machines and three containers: Pi-hole for DNS, Caddy as a reverse proxy, Vaultwarden, Portainer, Uptime Kuma, and an Odoo 18 server on PostgreSQL with separate dev and production-style databases. Remote access goes through Tailscale, so no ports are open on the router. I use it to test Odoo automations with n8n. Next up: backups and a real restore test.

  • Proxmox
  • Linux
  • Tailscale
  • Docker
  • Caddy
  • PostgreSQL
Systemsodoo 19 · inventory
sales · point of sale
Business software● In production

Odoo 19 Rebuild

A full redesign of the supermarket's business software on Odoo 19, covering inventory, sales and point of sale, with a clean, normalized product database of 10,000+ items behind it.

  • Odoo 19
  • Python
  • SQL
Web<catalog />
superelmejor.com
Storefront● Live

superelmejor.com

A full-stack online catalog for El Mejor Supermarket, with product listings, a dynamic interface and a backend connected to the store's data. It is the store's main digital presence.

  • HTML
  • CSS
  • JavaScript
  • PHP
Visit the site · Source on GitHub
Toolsknapsack(shelf, items)
→ best mix that fits
Optimizer● Built for the store

Inventory Optimizer

A Python tool that decides which products go on a shelf when space is limited. It scores each product on demand, margin and turnover, solves the shelf as a bounded knapsack problem with dynamic programming, and compares the result with filling the shelf by hand.

  • Python
  • Dynamic programming
Source on GitHub
Web<aecc />
student association site
Association website● Delivered

AECC Website

The website for the computer science student association (ACM chapter) at UPR Bayamón, built while I was its vice president. It presents the association's activities, team and testimonials and has a contact form that sends mail through PHPMailer.

  • HTML
  • CSS
  • JavaScript
  • Bootstrap
  • PHP
Source on GitHub
Skills

What I work with.

02 / 04

</>Languages

  • Python
  • JavaScript
  • Java
  • SQL
  • PHP
  • HTML and CSS
  • Kotlin

{}Backend and data

  • Node.js
  • Express
  • SQLite
  • PostgreSQL
  • MySQL
  • SQL Server

UIFrontend

  • React
  • Vite
  • Tailwind CSS
  • HTML5 Canvas

ERPBusiness systems

  • Odoo
  • n8n
  • WordPress
  • SharePoint
  • Active Directory

>_Infrastructure

  • Linux
  • Proxmox
  • Docker
  • nginx
  • Caddy
  • Tailscale
  • Pi-hole
  • Cloudflare Tunnel

+Also

  • Technical documentation
  • Process automation
  • Networking and security basics
  • English and Spanish
About
03 / 04

Gianlexis Quiñones

Software developer and IT specialist

Practical software and systems for real businesses.

I'm a computer science graduate from the University of Puerto Rico at Bayamón. Since 2021 I've worked as the IT technician at a supermarket in Carolina. It's a small business, so I end up handling a bit of everything: the systems, the product database, the staff and the warehouse.

I also build the software the store needs, from its website to the signage on its TVs. Along the way I did two IT internships with Puerto Rico government agencies, where I worked on SharePoint, Active Directory, support tickets and apps that talk to Oracle databases.

Outside of work I run a HomeLab on a spare laptop to learn how this infrastructure works by building it. I'm fully bilingual in English and Spanish, and I'm looking for a software development or IT role where I can keep building practical tools.

Direct channels
GitHub LinkedIn Email
01

Business systems

Odoo setups for inventory, sales and point of sale, with clean data behind them.

02

Web apps

Full-stack sites and admin tools with Node.js, React and PHP.

03

Automation

Scripts and workflows that replace manual tracking, with Python and n8n.

04

IT and infrastructure

Linux servers, networking, Proxmox and everyday support.

Experience

Where I've worked.

04 / 04
Oct 2021 to present

IT Technician

"El Mejor" Supermarket · Carolina, Puerto Rico

  • Oversee store operations, enforce store policies and supervise staff.
  • Coordinate warehouse organization and keep inventory records in order.
  • Manage and normalize a database of 10,000+ products with multiple attributes each.
  • Provide day-to-day IT support for the store's computers and software.
Feb to Jun 2025

Software Development Intern

Department of Economic Development and Commerce of Puerto Rico (DDEC)

  • Administered agency-wide Microsoft SharePoint sites.
  • Resolved IT tickets and debugged existing code.
Apr to Sep 2024

Software Development and Project Management Intern

Office of Management and Budget of Puerto Rico (OGP)

  • Helped design software that connects to Oracle databases and web APIs.
  • Made training videos that staff still use to learn an important admin system.
Aug 2024 to present

Vice President, Secretary and Project Manager

Computer Science Student Association (AECC), UPR Bayamón

  • Organized events for 50+ students on algorithms, programming and teamwork.
  • Ran a recruitment drive that brought in 100+ members.

B.S. in Computer Science

University of Puerto Rico at Bayamón · Minor in Information Processing

Coursework included data structures, algorithm analysis, operating systems, databases, computer architecture and information security. Student representative on the General Student Council, and 4th place in the beginner division of the Interuniversity Programming Competition.

Certifications

  • Microsoft Word Expert (2016)Dec 2024
  • Microsoft Excel Associate (2019)Apr 2023
  • Google Cybersecurity CertificateJul 2023
Contact

Let's build something useful.

I'm open to software development and IT roles. The best way to reach me is by email.

gianquinones21@gmail.com
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