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I'm Abraham, a Full Stack Developer with over 4 years of experience building high-performance web and mobile applications for international clients. I specialize in TypeScript and crafting scalable solutions using Node.js, NestJS, React, Next.js, Express, and React Native, while applying Clean Architecture and SOLID principles to ensure code quality and maintainability. I also teach Algorithms and Data Structures at Universidad Marta Abreu, designing practical projects that boost problem-solving and analytical skills. By incorporating active learning and competitive programming, I’ve improved student engagement and outcomes, and I enjoy collaborating with cross-functional teams to deliver meaningful software.…I'm Abraham, a Full Stack Developer with over 4 years of experience building high-performance web and mobile applications for international clients. I specialize in TypeScript and crafting scalable solutions using Node.js, NestJS, React, Next.js, Express, and React Native, while applying Clean Architecture and SOLID principles to ensure code quality and maintainability. I also teach Algorithms and Data Structures at Universidad Marta Abreu, designing practical projects that boost problem-solving and analytical skills. By incorporating active learning and competitive programming, I’ve improved student engagement and outcomes, and I enjoy collaborating with cross-functional teams to deliver meaningful software.

Abraham Fernández Quiñones

Full Stack Developer, Web Developer, Front-End Developer, +2

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I'm Abraham, a Full Stack Developer with over 4 years of experience building high-performance web and mobile applications for international clients. I specialize in TypeScript and crafting scalable solutions using Node.js, NestJS, React, Next.js, Express, and React Native, while applying Clean Architecture and SOLID principles to ensure code quality and maintainability. I also teach Algorithms and Data Structures at Universidad Marta Abreu, designing practical projects that boost problem-solving and analytical skills. By incorporating active learning and competitive programming, I’ve improved student engagement and outcomes, and I enjoy collaborating with cross-functional teams to deliver meaningful software.…I'm Abraham, a Full Stack Developer with over 4 years of experience building high-performance web and mobile applications for international clients. I specialize in TypeScript and crafting scalable solutions using Node.js, NestJS, React, Next.js, Express, and React Native, while applying Clean Architecture and SOLID principles to ensure code quality and maintainability. I also teach Algorithms and Data Structures at Universidad Marta Abreu, designing practical projects that boost problem-solving and analytical skills. By incorporating active learning and competitive programming, I’ve improved student engagement and outcomes, and I enjoy collaborating with cross-functional teams to deliver meaningful software.

Available to hire

I’m Abraham, a Full Stack Developer with over 4 years of experience building high-performance web and mobile applications for international clients. I specialize in TypeScript and crafting scalable solutions using Node.js, NestJS, React, Next.js, Express, and React Native, while applying Clean Architecture and SOLID principles to ensure code quality and maintainability.

I also teach Algorithms and Data Structures at Universidad Marta Abreu, designing practical projects that boost problem-solving and analytical skills. By incorporating active learning and competitive programming, I’ve improved student engagement and outcomes, and I enjoy collaborating with cross-functional teams to deliver meaningful software.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Spanish; Castilian

Fluent

English

Fluent

Work Experience

Freelance Fullstack Developer at Sunrise Academy

March 1, 2022 - Present

Developed Loro, a real-time messaging platform for a small educational center seeking an alternative communication tool for students and staff. Built with React, Node.js, Express, and Socket.IO. The platform was adopted by more than 500 active users, leading to a 60% improvement in collaboration efficiency and a significant reduction in communication delays, ultimately streamlining interactions and enhancing engagement across the institution.

Professor of Algorithms and Data Structures at Universidad Marta Abreu

September 1, 2024 - Present

I teach Algorithms and Data Structures to computer engineering students, designing practical projects that enhance problem solving and analytical skills. By introducing active learning and competitive programming methodologies, I have improved student engagement and academic performance while fostering a deeper understanding of algorithmic thinking.

Full Stack Developer at University of Camagüey

September 1, 2024 - November 1, 2025

Developed Certificate Printer, a web application for automated academic certificate generation, using React, Node.js, NestJS, Express, and Bootstrap. Enabled the creation of customizable certificate templates, reducing manual design time by 70%. Streamlined administrative workflows, cutting certificate issuance time from 3–5 days to under 24 hours. Successfully adopted by 10+ institutions and used by 5,000+ students, resulting in a 40% increase in administrative efficiency and improved student satisfaction.