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Grupo Boticário logo
Grupo Boticário

Criamos oportunidades para a beleza transformar a vida das pessoas, e assim transformar o mundo ao nosso redor.

Specialist II – Front-End, React, SPA Architecture

Frontend EngineerSoftware EngineerFull TimeRemoteSeniorTeam 10,001+Since 2010H1B No SponsorCompany SiteLinkedIn

Location

Brazil

Posted

71 days ago

Salary

0

Seniority

Senior

Job Description

Specialist II – Front-End, React, SPA Architecture

Grupo Boticário

• How will your day look? - Lead the architecture of the "One Page Cockpit": Be responsible for the technical design and implementation of a very high data-density interface (Data-Heavy SPA), enabling planners to simulate infinite "what-if" scenarios without page reloads and with Time to Interactive below 50ms. - Performance Engineering and Virtualization: Implement advanced React rendering techniques (virtualization of lists/tables to support tens of thousands of SKUs), aggressive memoization, aggressive code-splitting, and browser Event Loop management to ensure the interface never freezes (Main Thread Block). - Transient State Management (Draft Mode): Develop complex, bidirectional client-side mathematical logic (GMV ↔ Volume). You will orchestrate the "draft" state in local memory (State Management) while synchronizing deltas (the edited cells) in the background with our BFF (Kotlin/EKS) and DynamoDB. - Visual and Advanced Graphics Synchronization: Ensure a single visual Source of Truth across distinct components. If a user edits a "Baseline" cell in the table, the associated charts (recharts/D3 or embedded Tableau Extensions) must immediately reflect the updated trend line. - Integration and Real-Time: Consume RESTful APIs and design continuous bidirectional communication via WebSockets with the backend, ensuring progress updates for long-running executions (orchestrated by AWS Step Functions) update toasts and progress bars on screen smoothly. - Technical Quality and Tooling: Lead Clean Code best practices in the repository. Define a comprehensive automated testing pipeline (Unit Tests with Jest/Vitest, Integration with React Testing Library and E2E with Cypress/Playwright) and work on CI/CD with GitHub Actions and cloud deployment.

Job Requirements

  • Requirements and qualifications:
  • Solid experience in high-complexity Front-End: Practical, proven experience in the architecture and development of corporate SPAs (Single Page Applications) that handle massive on-screen data volumes, complex grids, and interactive dashboards.
  • Extreme proficiency in React and TypeScript: Absolute mastery of React lifecycles, custom Hooks, Server-Side Rendering (SSR) vs Client-Side Rendering (CSR), and strict TypeScript typing to protect the application from runtime errors.
  • Mastery of State Management and Data Fetching: Deep knowledge of modern global state libraries (Zustand, Redux Toolkit) and cache/network orchestration (RTK Query, React Query / TanStack Query).
  • Frontend Test Architecture: Ability to design efficient frontend test pyramids, focusing on user behavior (Behavior-Driven) rather than brittle implementation tests.
  • Technical capability and critical thinking: Ability to profile rendering bottlenecks using native browser tools (Chrome DevTools Performance), identify memory leaks, and refactor array-manipulation algorithms in JavaScript.
  • Good communication and business alignment: Ability to collaborate closely with UX/UI Designers and Product Managers, translating system user journeys into highly ergonomic, reusable interface components.
  • Differentials:
  • Professional experience with the AWS cloud ecosystem (e.g., static hosting on Amazon S3, distribution via CloudFront CDN, and edge functions via Lambda@Edge).
  • Familiarity with developing or integrating Agentic AI-oriented components (on-screen copilots, token streaming in the interface, generative UI rendering).
  • Previous experience developing extensions for DataViz tools (especially Tableau Extensions).
  • Experience migrating legacy monolithic systems or heavy Excel spreadsheets to world-class web applications.

Benefits

  • Here, your Health is a priority
  • . Medical and dental plan
  • . Medication assistance
  • . Health allowance for family members
  • . Complimentary psychotherapy sessions
  • . Telemedicine and second medical opinion
  • . Free flu vaccination
  • . Health care programs
  • To take care of your Nutrition
  • . Food allowance
  • . Year-end food allowance
  • Ensuring Well-Being and Quality of Life in all aspects
  • . Gym and fitness studio plan
  • . Home office allowance (hybrid and remote work models)
  • . Pet health plan
  • . Birthday day off
  • . Up to 40% discount on our products
  • . Employee association (partnerships and discounts: multi-brand store, TotalPass gyms, courses and more!)
  • . Travel and accommodation program
  • For Family, our most precious asset
  • . Childcare allowance
  • . Infant nutrition credit
  • . Babysitter allowance
  • . School supplies allowance
  • . Legal, psychological and social counseling
  • . Support for atypical parents
  • . Extended parental leave (180 days for mothers and 120 days for fathers)
  • Financial security for protection and peace of mind
  • . Life insurance
  • . Bereavement support for loss of parents
  • . Private pension plan
  • . Payroll-deductible loans
  • Benefit packages are configured according to eligibility rules.*

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