Yohan Carlos Hernández Sánchez
Yohan Carlos Hernández Sánchez

Senior Frontend Engineer

Actively looking · Member since 12 Nov 2026
Location
Pinar del Rio, Cuba, Cuba
Desired salary
1000–3500 USD/monthly
Work preference
Remote Only / Full Time, Part Time, Contract, Freelance
Experience level
Senior

About

Professional summary

I am a Senior Frontend Engineer with 13 years of experience building web applications, enterprise platforms, and SaaS products for international clients across the United States, Europe, and Latin America.

I specialize in React, Next.js, TypeScript, and JavaScript, creating complex, production-ready user interfaces with strong attention to maintainability, performance, and code quality.

I have experience leading frontend delivery, collaborating with cross-functional teams, integrating REST APIs and WebSockets, and working alongside backend services built with Node.js, NestJS, Java Spring Boot, PHP, and .NET.

My work includes SaaS platforms, B2B applications, civil registry systems, booking and payment products, e-commerce solutions, WordPress projects, and Web3 applications. I also build independent multi-tenant SaaS products and commercial plugins.

I value modern web architecture, automated testing, strict typing, and reliable CI workflows. My technical toolkit includes React, Next.js, Vue.js, Astro, PostgreSQL, AWS, Docker, Playwright, Vitest, and GitHub Actions.

I am based in Cuba and available for international remote contract engagements as an independent contractor.

Skills

37 capabilities

Tech stack & tools

Working toolkit

Experience

Career history

Full-Stack Software Engineer Freelance

I develop web applications and custom software solutions for independent projects and clients.

I build solutions with React, Next.js, TypeScript, and Node.js, covering frontend implementation, API integration, database-driven functionality, and deployment.

Software Engineer QA-bit

I developed features for an enterprise B2B SaaS application using React and TypeScript within a Vite and pnpm monorepo.

I collaborated with Java and Spring Boot services on AWS and improved code quality through stricter typing, linting, Vitest, Playwright, and CI workflows.

Frontend Engineer & Team Lead AGL Tech Solutions LLC

I led frontend implementation across multiple web projects, building React and Next.js applications.

My work included a SaaS AI chatbot using NestJS, WebSockets, and AWS, as well as Web3/NFT applications, WordPress solutions, and a Vue.js and .NET payment intermediary platform.

Frontend Engineer Kynsoft

I developed frontend features for a national civil registry platform using React, Next.js, and Vite, integrated with Java Spring Boot microservices.

I worked on payment gateway and appointment-booking features, migrated an Odoo course system to React and Node.js, and contributed to Next Track and Last Mile projects.

Frontend Engineer & Team Lead QA-bit

I developed frontend functionality for a bus booking application and coordinated frontend implementation activities.

I also contributed to WordPress projects and supported delivery across frontend workstreams.

Frontend Engineer BFS Tracking System

I developed React frontend functionality for a freight management and tracking platform.

I integrated the frontend with Java Spring Boot backend services hosted on AWS.

WordPress Developer TalenCuba

I developed a WooCommerce online store and implemented custom WordPress modules.

I also delivered API integrations to support e-commerce functionality.

Web Development & IT Earlier Experience

I worked as a webmaster for a regional television organization, developing and maintaining WordPress, PHP, and JavaScript solutions, along with Android applications using Java.

I also gained earlier IT security experience in the banking sector, working with networks, Windows Server, Active Directory, and automation.

Education

Learning history

University of Informatics Sciences (UCI)

Computer Science Engineer, Computer Science

Computer Science Engineering degree completed in Cuba.

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