Senior Front-End Developer

This is a fully remote position, open to applicants in Brazil.

📋 Description

• Design, implement, and enhance the company's web interfaces and applications.

• Create a visual connection between intricate operations and market participants, including traders and regulators.

• Develop scalable, high-performance applications utilizing Next.js App Router and TypeScript.

• Construct accessible, consistent, and responsive interfaces.

• Organize complex data-entry and registration workflows with comprehensive validation.

• Manage asynchronous data, including caching, synchronization, server-side rendering (SSR), and hydration.

• Coordinate application-wide state and synchronize filters and navigation with the URL.

• Implement and uphold secure authentication and session management integrated with Keycloak via OIDC.

• Develop and enhance the Backend for Frontend (BFF) layer to facilitate communication between the front end and the API Gateway.

• Ensure consistent code quality through linting, formatting, and documentation practices.

• Contribute to the development of modern, reactive, and resilient interfaces for energy trading and settlement systems in Brazil.

⛳️ Requirements

• Advanced expertise in Next.js with App Router and TypeScript in strict mode.

• Significant experience with Tailwind CSS v4, Material UI/Radix UI, and Lucide Icons.

• Practical experience with React Hook Form and Zod.

• Strong familiarity with TanStack Query, including prefetching, caching, SSR, and hydration.

• Proficiency in Zustand for global state management.

• Experience with nuqs for typed URL search parameters.

• Proficient in Auth.js/NextAuth v5 integrated with Keycloak via OpenID Connect.

• Familiarity with Next.js API routes as a BFF layer and REST contracts.

• Experience with Sonner and Biome.

• Basic to intermediate understanding of Docker and Docker Compose.

• Experience or interest in financial and energy markets.

• Experience with or knowledge of financial charts, order books, WebSockets, and Server-Sent Events (SSE) is desirable.

• Familiarity with testing frameworks like Vitest, React Testing Library, Playwright, or Cypress is preferred.

• Desirable knowledge of Core Web Vitals, code splitting, and bundle optimization techniques.

• Basic knowledge of CI/CD, Docker, Terraform, and AWS/GCP is advantageous.

• Proficiency in English is preferred.

🏝️ Benefits

• Comprehensive professional growth opportunities.

• Flexible remote working arrangements.

• Opportunity to engage in real-world, high-impact projects.

• Supportive and healthy work environments.

• Exposure to mission-critical, high-performance solutions.