Web Frontend Senior Developer

Syffer is an all-inclusive consulting company focused on talent, tech and innovation. We exist to elevate companies and humans all around the world, making change, from the inside to the outside. We believe that technology + human kindness positively impacts every community around the world. Our approach is simple, we see a world without borders, and believe in equal opportunities. We are guided by our core principles of spreading positivity, good energy and promote equality and care for others. Our hiring process is unique! People are selected by their value, education, talent and personality. We dont present ethnicity, religion, national origin, age, gender, sexual orientation or identity. Its time to burst the bubble, and we will do it together! What You'll do: - Design, develop, and maintain frontend applications using ReactJS and Next.js; - Implement and maintain reusable, component-based UI architectures; - Integrate frontend applications with backend services using WebSocket or SSE; - Implement Server-Driven UI patterns for dynamic interface rendering; - Ensure accessibility, responsiveness, and performance of user interfaces; - Collaborate with backend, product, and design teams in an Agile environment; - Contribute to code reviews, CI/CD pipelines, and continuous improvement processes; - Hybrid Work Model; What You Are: - 5+ years of frontend development experience with ReactJS and strong experience with Redux; - 2+ years of experience with Next.js and server-side rendering (SSR) concepts; - Proficiency in Node.js and experience integrating WebSocket or Server-Sent Events (SSE) into frontend workflows; - Solid understanding of component-based architecture and experience building reusable UI components; - Strong experience with Server-Driven UI (SDUI) design patterns and dynamic UI rendering from backend-driven schemas; - Familiarity with chat prompt design patterns and conversational UI paradigms; - Understanding of accessibility standards and responsive design; - Experience working in Agile development environments with Jira, Git, and CI/CD workflows; - Fluent in Portuguese and English;  What youll get: - Wage according to candidate's professional experience; - Remote Work whenever possible; - Allocation of health insurance from the beginning of the employment; - Delivery of work equipment adjusted to the performance of functions; - And others. Work together with expert teams on projects of large magnitude and intensity, long term together with our clients, all leaders in their industries. Are you ready to step into a diverse and inclusive world with us? Together we will promote uniquess!