Senior Front-End Developer

Beyond Soluções

. Design, implement, and evolve the company’s web interfaces and applications .

Posted 11/11/2026contractRemote • BrazilSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates advanced proficiency in Next.js with App Router and TypeScript, focusing on building scalable and high-performance web applications. Capable of managing complex data workflows and ensuring secure authentication while contributing to the development of modern interfaces for energy trading systems.

Highest-signal resume keywords

Next.js Application DevelopmentTypeScript ProficiencyTailwind CSS ExperienceReact Hook Form KnowledgeKeycloak Integration

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Next.jsTypeScriptTailwind CSSReact Hook FormZodTanStack QueryZustandAuth.js/NextAuthDockerVitest

Tools & Technologies

KeycloakMaterial UIRadix UILucide IconsSonnerBiomeDocker ComposeAWSGCPCypress

Industry Keywords

Energy MarketsFinancial MarketsWebSocketsSSECore Web VitalsCI/CDBundle OptimizationOrder BooksFinancial ChartsREST Contracts

Tech Stack

Tools & technologies

AWSCypressDockerGoogle Cloud PlatformJavaScriptMaterial UINext.jsReactTerraformTypeScript

About the role

Key responsibilities & impact

Design, implement, and evolve the company’s web interfaces and applications
Build the visual bridge between complex operations and market participants, traders, and regulators
Develop scalable, high-performance applications using Next.js App Router and TypeScript
Build accessible, consistent, and responsive interfaces
Structure complex data-entry and registration workflows with end-to-end validation
Manage asynchronous data, caching, synchronization, SSR, and hydration
Orchestrate application-wide state and synchronize filters and navigation with the URL
Implement and maintain secure authentication and sessions integrated with Keycloak via OIDC
Develop and evolve the BFF layer to mediate between the front end and the API Gateway
Ensure continuous code quality, linting, formatting, and documentation
Contribute to modern, reactive, and resilient interfaces for energy trading and settlement systems in Brazil

Requirements

What you’ll need

Advanced proficiency in Next.js with App Router and TypeScript in strict mode
Strong experience with Tailwind CSS v4, Material UI/Radix UI, and Lucide Icons
Hands-on experience with React Hook Form and Zod
Solid experience with TanStack Query, prefetching, caching, SSR, and hydration
Proficiency with Zustand for global state management
Experience with nuqs for typed URL search parameters
Proficiency with Auth.js/NextAuth v5 integrated with Keycloak via OpenID Connect
Experience with Next.js API routes as a BFF layer and with REST contracts
Experience with Sonner and Biome
Basic to intermediate knowledge of Docker and Docker Compose
Experience or desirable knowledge of financial and energy markets
Experience with or desirable knowledge of financial charts, order books, WebSockets, and SSE
Experience with Vitest, React Testing Library, Playwright, or Cypress is desirable
Desirable knowledge of Core Web Vitals, code splitting, and bundle optimization
Desirable basic knowledge of CI/CD, Docker, Terraform, and AWS/GCP
Advanced English is desirable

Benefits

Comp & perks

End-to-end professional growth opportunities
Remote work
Opportunity to work on real-world, high-impact projects
Healthy work environments
Exposure to mission-critical, high-performance solutions