Available for projects

Hi, I'mSebastián Pérez

Full StackDeveloper

I build fast websites and web apps for clients in Colombia and the United States, using Next.js, Astro, PHP, WordPress and Django. From design to deployment, and from deployment to maintenance.

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Portrait of Sebastián Pérez, full stack developer

About Me

A passion for building

I am a full stack developer based in Ibagué, Colombia. I specialise in web products that pair a solid technical foundation with carefully crafted interfaces — and in keeping them healthy long after launch.

  • Development

    Clean, scalable and maintainable code built on modern technologies.

  • Design

    Modern, intuitive interfaces that users actually enjoy.

  • Performance

    Relentless optimisation for genuinely fast experiences.

  • Collaboration

    Effective teamwork backed by clear communication.

4+
Projects delivered
2+
Years coding
+5
Programming languages
3
Active clients

Career

Professional Experience

From the classroom to a development team, and from there to my own clients: where I have worked and what I built at each stage.

  1. Web Developer

    Freelance

    Current
    2025 — Present·OngoingRemote · Colombia / USA

    Building and maintaining corporate websites for clients in the United States, from structuring the site through to deployment and ongoing support.

    • Corporate websites in Astro for Vetro Steel Design Studio and JP Media Groups.
    • Ongoing maintenance of the Anderson Insurance Group WordPress site.
    • Performance tuning, technical SEO and deployment on Cloudflare infrastructure.
    • Astro
    • WordPress
    • TypeScript
    • Tailwind CSS
    • Cloudflare

  2. Junior Developer — Internship

    Tecnologías Sinergia SAS

    January 2026 — June 2026·6 monthsIbagué, Colombia

    Professional internship within the development team, taking part in the full software lifecycle: requirements analysis, implementation, testing and deployment.

    • Built backend features and user interfaces across the team’s products.
    • Worked in an agile setup (Scrum), tracking tasks in Jira and using Git for version control.
    • Fixed bugs, took part in code reviews with senior developers and wrote technical documentation.
    • Python
    • Django
    • JavaScript
    • PostgreSQL
    • Git
    • Scrum

Skills

Tech Stack

The tools I work with day to day to build robust, scalable applications.

Frontend

  • React80%
  • Next.js80%
  • TypeScript90%
  • Astro85%
  • Tailwind CSS85%

Backend

  • Django95%
  • FastAPI90%
  • Node.js85%
  • Python90%
  • PHP75%

Database & Cloud

  • PostgreSQL85%
  • MySQL85%
  • Supabase92%
  • Cloudflare80%
  • AWS75%

Tools & Workflow

  • Git90%
  • Docker80%
  • WordPress82%
  • CI/CD82%
  • Jira85%
  • Scrum88%

Always learning and exploring new technologies

Portfolio

Featured Projects

Sites and platforms I have built or currently maintain, for clients in Colombia and the United States.

Featured

SIEKI

E-commerce and admin dashboard

E-commerce platform and admin dashboard for Epa Keratinas Ibagué, with payment processing, real-time inventory management and role-based administration.

  • Django
  • React
  • Supabase
  • PostgreSQL
Source for SIEKIView demo for SIEKI
  • vetrosteelut.com

    Vetro Steel Design Studio

    Corporate site · Utah, USA

    Institutional site for a studio that designs and fabricates architectural systems in tempered glass and stainless steel. Split commercial/residential catalogue, technical capabilities section and a quote request form.

    • Astro
    • TypeScript
    • Tailwind CSS
    Visit site for Vetro Steel Design Studio
  • jpmediagroups.com

    JP Media Groups

    Creative agency · Miami, NY, LA & Utah

    Site for an audiovisual agency operating in four US cities. Covers five service lines (production, photography, music videos, brand identity and digital strategy), team profiles and project enquiries.

    • Astro
    • TypeScript
    • Tailwind CSS
    Visit site for JP Media Groups
  • anderson.insure

    Anderson Insurance Group

    WordPress maintenance · Utah, USA

    Under maintenance

    Ongoing maintenance for an independent insurance agency in Salt Lake City: core, theme and plugin updates, content management, performance tuning and technical SEO across dozens of coverage pages.

    • WordPress
    • PHP
    • SEO
    Visit site for Anderson Insurance Group
See more on GitHub

Contact

Let's Work Together

Got a project in mind, or a site that needs looking after? Tell me about it and I will come back with a proposal.

Contact details

Why work with me?

  • Replies in under 24 hours
  • Clean, well-documented code
  • Clear and consistent communication
  • Support and maintenance after delivery