General Technology Solutions in Medellín, Colombia, is seeking a Senior Backend / Junior Frontend Fullstack Developer for a remote role. You will design, code, and test features, mainly on the backend (Node.js/Express) with support for frontend React applications. Required 5+ years in Node.js and 1–3 years in React, plus PostgreSQL and MongoDB experience. AWS, CI/CD, and AI/LLM integration are highly valued. You will collaborate across teams and mentor others in a dynamic, inclusive environment.