Hi, I'm Omar Mendoza.
Web applications, integrations, and process automation.
Building web solutions for real needs.
Services
Offerings for building or connecting digital tools.
Payment gateway integrations
Gateway integration for checkout, transaction confirmation, and payment states.
See payment features in ALIA and House StreamingDiscuss your projectInternal dashboards and reporting
Interfaces for reviewing and managing operational information, with reports suited to the team's needs.
See Celisapp in selected projectsDiscuss your projectApplication maintenance and evolution
Maintenance for existing web solutions, replaceable modules, and new features delivered in stages.
Experience maintaining web solutionsDiscuss your projectSelected projects
A selection of web applications and integrations I have built.

A platform connecting users with verified psychologists and booking emotional support sessions. Includes authentication, bookings, and payments.

An e-commerce catalog for streaming accounts, with PayPal, Binance Pay, or Pago Móvil payments and automatic delivery.

A cross-platform desktop app for sales, inventory, clients, currency exchange, and cash balance; includes a real-time dashboard and exportable PDF reports.
Experience and education
Professional experience and education in web development.
Experience
Freelancer
Current work
I work independently with my own clients to build web solutions tailored to their needs. I develop web applications, connect services through APIs, and automate processes to simplify tasks and improve workflows.
Frontend Developer (Remote) · Atrinium, Spain
2024 - 2026-09-21
Developed and maintained web solutions using Next.js for projects in the insurance industry, including Hermes software. Implemented features, maintained code quality and consistency following clean-code principles, and delivered optimized, user-friendly interfaces. Also contributed to the Flesip landing page, focused on a modern and responsive experience.
Nival Digital · Landing page
2023 - 2023
Built the Nival Digital landing page with React, Next.js, Tailwind CSS, and TypeScript.
Personal projects
Education
2020 - Present
I have studied Computer Engineering at UPTAI since 2023. I also completed courses on Go, Vue3, TypeScript, and NextJS through Platzi and Udemy in 2023. I studied React, NodeJS, and JavaScript through Fernando Herrera's courses, completed between 2021 and 2022.
How I work
A proposed delivery approach, agreed for each project.
Understand your needs
Learn what you want to solve and how you currently work.
Define the path
Agree on scope, priorities, and stages.
Build in stages
Implement the solution as agreed.
Verify the result
Review how it works and the important cases.
Get in touch
Tell me what you need to build or connect. You can also review my experience and education in my CV.
