We are seeking a highly experienced Senior Front-End Engineer with a minimum of 10 years of professional experience in modern web application development. The ideal candidate must have deep expertise in JavaScript, React, and modern front‑end architectures, along with strong hands‑on experience in Node.js and advanced Server‑Side Rendering (SSR) implementations. This role requires a strong architectural mindset and the ability to work with different template engines and rendering frameworks, as some clients require working on various server‑side template engines such as Pug, EJS, Handlebars, and other rendering solutions. The candidate must be comfortable adapting to multiple frameworks and enterprise environments.