Software Engineer: Apply engineering principles to entire software development lifecycle, work on large-scale systems, focus on architecture, scalability, performance, and security.
Software Developer: Write, test, and maintain software applications, focus on implementation rather than high-level system architecture.
Web Developer: Specialize in building and maintaining websites or web applications, can focus on front-end, back-end, or both, work with tools like HTML, CSS, JavaScript, PHP, React, Node.js, MySQL.
Understanding the distinctions between these roles is important for making career decisions or hiring choices in the tech industry.