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I’m Alejandro Colfer Mendoza, a back-end focused full stack developer with 1+ years of experience building and shipping six web production projects. I specialize in e-commerce and asset management platforms using TypeScript, Next.js, and PostgreSQL, and I also develop APIs with Spring Boot and GraphQL. Beyond web development, I enjoy designing practical AI solutions—building RAG-based architectures for AI assistants and integrating LLM experiences like chatbots. I work with tools and workflows such as GitHub Actions, CI/CD, and cloud-related services, and I value clear client communication, requirements gathering, and strong technical documentation while continuously improving my engineering skills.…I’m Alejandro Colfer Mendoza, a back-end focused full stack developer with 1+ years of experience building and shipping six web production projects. I specialize in e-commerce and asset management platforms using TypeScript, Next.js, and PostgreSQL, and I also develop APIs with Spring Boot and GraphQL. Beyond web development, I enjoy designing practical AI solutions—building RAG-based architectures for AI assistants and integrating LLM experiences like chatbots. I work with tools and workflows such as GitHub Actions, CI/CD, and cloud-related services, and I value clear client communication, requirements gathering, and strong technical documentation while continuously improving my engineering skills.

Alejandro Colfer Mendoza

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

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I’m Alejandro Colfer Mendoza, a back-end focused full stack developer with 1+ years of experience building and shipping six web production projects. I specialize in e-commerce and asset management platforms using TypeScript, Next.js, and PostgreSQL, and I also develop APIs with Spring Boot and GraphQL. Beyond web development, I enjoy designing practical AI solutions—building RAG-based architectures for AI assistants and integrating LLM experiences like chatbots. I work with tools and workflows such as GitHub Actions, CI/CD, and cloud-related services, and I value clear client communication, requirements gathering, and strong technical documentation while continuously improving my engineering skills.…I’m Alejandro Colfer Mendoza, a back-end focused full stack developer with 1+ years of experience building and shipping six web production projects. I specialize in e-commerce and asset management platforms using TypeScript, Next.js, and PostgreSQL, and I also develop APIs with Spring Boot and GraphQL. Beyond web development, I enjoy designing practical AI solutions—building RAG-based architectures for AI assistants and integrating LLM experiences like chatbots. I work with tools and workflows such as GitHub Actions, CI/CD, and cloud-related services, and I value clear client communication, requirements gathering, and strong technical documentation while continuously improving my engineering skills.

Available to hire

I’m Alejandro Colfer Mendoza, a back-end focused full stack developer with 1+ years of experience building and shipping six web production projects. I specialize in e-commerce and asset management platforms using TypeScript, Next.js, and PostgreSQL, and I also develop APIs with Spring Boot and GraphQL.

Beyond web development, I enjoy designing practical AI solutions—building RAG-based architectures for AI assistants and integrating LLM experiences like chatbots. I work with tools and workflows such as GitHub Actions, CI/CD, and cloud-related services, and I value clear client communication, requirements gathering, and strong technical documentation while continuously improving my engineering skills.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Spanish; Castilian

Fluent

English

Advanced

Work Experience

Freelance Full Stack Developer at Self-employed

August 1, 2025 - Present

Developed a NFC business card SaaS where each NFC card opens a digital profile owned by the card owner, including visit tracking and click analytics. Reached ~50 users and supported a pre-penetration testing security audit that helped close critical findings. Delivered end-to-end web functionality focused on usability, analytics, and reliability for small business use cases.