We're looking for the special, unique and amazing YOU!AtKCS IT, we look for people who stand out — those who are always striving to be better, who fight for quality, and who share our core values:dedication, energy, integrity, transparency, flexibility, trust, honesty, hard work, proactivity, and teamwork .At KCS IT, we stand forequality and diversity. We foster a safe, inclusive environment where opportunities are equal for everyone. We do not discriminate based on age, ethnicity, sexual orientation, gender, disability, or any factor other than merit. All applications with the right skills for the position are welcome.We are looking for an Amazing:Web Frontend Developer Candidates must be living in Portugal. Seniority:Minimum 5 years Type of position:Hybrid (Braga or Coimbra – 1x per week onsite)The amazing you will have: 5+ years of experience as aFrontend Developer, with strong expertise inReactJSandRedux At least 2+ years of hands-on experience withNext.js, includingServer-Side Rendering (SSR)concepts Strong knowledge ofJavaScriptandTypeScript Experience withNode.jsand integratingWebSocketand/orServer-Sent Events (SSE)in frontend applications Solid understanding ofcomponent-based architectureand proven experience building and maintainingreusable UI components Strong experience withServer-Driven UI (SDUI)patterns and rendering dynamic user interfaces from backend-driven schemas Familiarity withchat prompt design patternsandconversational UI paradigms(e.g., AI assistant responses, structured user inputs, inline feedback) Experience consuming and integratingREST APIs Understanding ofaccessibility standardsandresponsive design best practices Experience working inAgile environments, using tools such asJira ,Git, andCI/CD pipelines Fluent English (spoken and written), used daily in the work environmentTo turn yourself from amazing to unique, you'll have (plus): Experience inreal-time applicationsor AI-driven user interfaces Relatedtechnical certificationsTech Stack: JavaScript, TypeScript React, Next.js, Redux Node.js WebSocket, Server-Sent Events (SSE) REST APIs CI/CD, GitWhy should you become part of our family? Personalized career development : your growth plan is tailored to your goals, both short and long term Interesting challenges ahead : work with multiple clients across different industries Free training programs : technical, behavioral, business, and language training to accelerate your development International projects : opportunity to work on international initiatives Flexible work modelsdepending on the project: Hybrid systems that balance collaboration and focus Full remote projects Full onsite projects Well-being first : free nutrition, psychologist, and general medicine appointments, plus yoga and personal training sessions — all remoteWho are we? Founded in2008and based inLisbon ,KCS ITis a consulting company specialized in Information Technology and Services, focused on creating value throughConsulting, Outsourcing, Innovation, and Training. With hubs inPorto, Leiria, and the Azores, we actively contribute to national and international technology projects. Since2018, KCS IT has been recognized as one of theTop 10 companies in the Index of Excellence, highlighting our strong commitment to employee development and satisfaction.