<jairoshr/>
EN/ ESLet’s talk

✳DEVELOPMENT, DESIGN & A LITTLE CURIOSITY.

Your next idea.Let’s makeit real.✳

Hi, I’m Jairo Herrera. I build websites and software that connect what your business needs with what technology can solve.

View projectsChat on WhatsApp

Junior Full-Stack Developer · Web Designer

Information Technology Engineering student · UTN

jairo / always a work in progress⌘

➜ whoami

Full-Stack Junior & web designer

➜ cat focus.txt

ideas → useful solutions

➜ learning, building, growing

From Costa Rica, for your next project.

Keep exploring
✳Designed for people.↗Built with purpose.✳Always growing.

01 / WHAT WE CAN BUILD

Technology with a purpose.

From your business’s first website to a tool that simplifies daily operations. We start by understanding what you need to solve.

A website that works for your business.

Help customers find you, understand what you offer, and take the next step. I design clear, responsive websites built around your business.

  • Business websites and landing pages
  • Digital catalogues and online stores
  • WordPress, responsive design and navigation improvements
  • Maintenance and content updates

Software for the way you work.

When off-the-shelf tools fall short, I build solutions around your processes, with a scope we define together.

  • Web and desktop applications
  • Management systems, inventory and point of sale
  • Reports and database-connected interfaces
  • APIs and integrations to fit the project

Less repetition. More room to focus.

I identify tasks that can be simplified and connect tools so information flows more easily between your processes.

  • Scripts and task automation
  • Bots and information processing
  • API integrations
  • Data organisation and handling

Practical support for your technology.

I help diagnose issues, maintain your platforms, and document solutions so they are easier to manage over time.

  • Website and application support
  • Updates and maintenance
  • Support with servers, databases and infrastructure
  • Technical documentation

02 / FROM CODE TO THE REAL WORLD

Projects with context.

Different businesses, specific needs. A selection of commercial solutions I have worked on.

Academic and learning projects

ACADEMIC / LEARNING

Learning is something you build, too.

Academic and personal projects to practise the foundations, explore tools and keep improving.

Agenda con SQL

Programming I coursework: a desktop organiser with contacts, events and database persistence.

  • Java
  • Swing
  • SQL Server
  • JDBC
View repository

API REST · ITI-621

Coursework exploring a student API: CRUD, validation and two versions of its JSON contract.

  • PHP
  • Laravel
  • SQLite
View repository

To-do app

A full-stack learning project for adding, completing and deleting tasks through a REST API.

  • React
  • Node.js
  • Express
View repository

03 / THE PERSON BEHIND THE CODE

Consistency, curiosity and hands-on work.

I’m Jairo Steven Herrera Romero, a Junior Full-Stack Developer and Information Technology Engineering student at UTN in Costa Rica.

Native Spanish · English A2 (basic)

More about me and how I work

I combine web development, interface design, WordPress and IT support with experience in databases, servers, automation and bots. I also work independently, building websites for businesses and entrepreneurs.

I enjoy understanding how things work and turning that knowledge into useful solutions. I keep strengthening my database foundations, programming logic, and frontend and backend skills through real projects.

  • Perseverance
  • Continuous learning
  • Adaptability
  • Customer focus

What drives me

Web development · Software · Applied AI · Automation · Databases · Networking · Infrastructure · Microsoft solutions

Understand first. Then build.

  1. 01

    Listen and define

    We talk about your business, the problem and the project scope.

  2. 02

    Design and develop

    I connect a clear interface with the functionality you need, keeping communication open throughout.

  3. 03

    Review and support continuity

    We review the result, and I document what is needed to make it easier to use and maintain.

Experience

ForeSight Solutions · Freelance

Learning put into practice through professional projects and independent work.

October 2025 — present

Remote · Costa Rica

Junior Full-Stack Developer

ForeSight Solutions, SRL

Web development and maintenance in an IT consulting environment covering Microsoft solutions, cloud services and digital transformation.

  • Business websites, interfaces and client features.
  • Support with servers and databases, automations and bots.
  • Technical support, documentation and platform improvements based on client needs.

January 2025 — present

Independent work

Web Designer & Developer

Freelance

Design and development of web solutions for businesses and entrepreneurs, connecting content, user experience and business goals.

  • Business websites, landing pages, digital catalogues and informational sites.
  • Responsive design and solutions tailored to each business.

Technologies

C# · .NET · JavaScript · SQL

Technologies I have used or studied. My level varies across them; the projects give context to how I use them.

01

Programming

  • C#
  • Java
  • Python
  • JavaScript
  • PHP
  • SQL
  • Go
  • C++
02

Web & frameworks

  • HTML
  • CSS
  • React
  • Bootstrap
  • Laravel
  • Django
  • .NET
  • ASP.NET Core
  • Spring Boot
  • WordPress
03

Desktop

  • C#
  • .NET
  • Avalonia UI
04

Databases

  • PostgreSQL
  • MySQL
  • SQLite
  • SQL Server

Database design · Entity–relationship diagrams · CRUD

05

Tools

  • Git
  • GitHub
  • Docker
  • Postman
  • Figma
  • Visual Studio
  • Visual Studio Code
  • Apache NetBeans
  • JetBrains IDEs
  • XAMPP
  • Claude Code
  • Cursor
06

Foundations & areas

OOP · Responsive design · Software architecture · Frontend · Backend · UI design · REST APIs · Automation · Bots · Linux · IT support · Infrastructure · Applied AI

In context: Two Little Monkeys brings together C#, .NET, Avalonia UI, ASP.NET Core, SQLite and PostgreSQL.

Education

UTN · Courses and badges

Courses, certificates of completion and badges that support my learning. Preparatory training is listed as coursework and does not imply passing an official certification exam.

UNIVERSITY EDUCATION

Information Technology Engineering

Universidad Técnica Nacional · Costa Rica

January 2024 — in progress
Explore courses and badges
Completion

Google Cloud Computing Foundations Certificate

Google

Related learning: Google Cloud Computing Foundations: Cloud Computing Fundamentals; Data, ML, and AI in Google Cloud; Prepare Data for ML APIs on Google Cloud (ID 28373079); Set Up an App Dev Environment on Google Cloud Skill Badge. Listed together as related programme learning.

Courses

AI-SDD Training: Specification-Driven Development con Inteligencia Artificial

Entrenamiento Certero

Courses

AB-900T00: Introduction to Microsoft 365 and AI Administration

Entrenamiento Certero

Courses

SC-900T00: Microsoft Security Compliance and Identity Fundamentals

Entrenamiento Certero

Courses

PL-300T00: Microsoft Power BI Data Analyst

Entrenamiento Certero

Courses

DP-900T00: Microsoft Azure Data Fundamentals

Entrenamiento Certero

Courses

AZ-900T00: Microsoft Azure Fundamentals

Entrenamiento Certero

Courses

AI-900T00: Microsoft Azure AI Fundamentals

Entrenamiento Certero

Courses

Análisis y Automatización con Python

Entrenamiento Certero

Courses

CCNA: Redes Empresariales, Seguridad y Automatización

Cisco Networking Academy / Cisco

Completion

Certificado de Finalización

ForeSight Solutions, SRL

Courses

Inmersión IA + Google Gemini

United Latino Students Association

Courses

CCNA: Introducción a las Redes

Cisco Networking Academy / Cisco

Courses

Introducción al Internet de las Cosas y Transformación Digital

Cisco Networking Academy

Badges

GitHub Foundations

07 / YOUR IDEA CAN START HERE

What would you
like to build?

Tell me what your business needs. We can discuss a website, an application, an automation, or support for an existing solution.

Chat on WhatsAppSend me an email

DIRECT CONTACT

jh599350@gmail.com+506 6019-0694WhatsApp

FIND ME ELSEWHERE

LinkedInGitHub