Elián Meaca

I’m a full-stack developer with experience building web applications using Angular, Node.js, NestJS, Express.js, and SQL/NoSQL databases. I bring a strong problem-solving mindset and adaptability across fast-changing technical environments, backed by hands-on work with production design and client-focused freelance development.

In my current role as an AI Training Engineer, I focus on prompt engineering and complex instruction evaluation for LLM systems, including Reinforcement Learning from Human Feedback and analysis of model reasoning, accuracy, and instruction-following behavior. Earlier, as a Freelance Web Developer, I improved clients’ online visibility through optimized layouts and SEO-oriented structure, while collaborating directly to gather requirements, iterate on designs, and deliver tailored web solutions.