Senior Frontend Developer

Titan Clarity; Natal; Híbrido; BRL 120.000 - 160.000; Tempo integral

Resumo da oferta

A leading tech company in Brazil seeks an experienced frontend engineer with over 8 years of experience in scalable systems. The candidate should be deeply familiar with React, modern state management, and REST APIs. Fluency in English is required, along with excellent skills in HTML5 and CSS3. Experience with agentic AI systems is a plus. This role will work closely with backend teams to build efficient applications.

Qualificações

• 8+ years of frontend engineering experience on high-availability, scalable systems.
• Proven ability to work within existing Redux / Redux-Saga setups.
• Hands-on experience using agentic AI coding systems for multi-step engineering tasks.

Conhecimentos

Fluent English communication

Deep React experience

Excellent HTML5 / CSS3 skills

Strong testing discipline

Performance profiling and optimization

Consuming REST APIs

Familiarity with Git

Experience with AI coding systems

Formação académica

BSc / MSc in Computer Science or equivalent practical experience

Ferramentas

Redux Toolkit

Jest

React Testing Library

Cypress

SASS

Git

Next.js

Descrição da oferta de emprego

Requirements

• Fluent English communication, written and spoken.
• BSc / MSc in Computer Science or equivalent practical experience.
• 8+ years of frontend engineering experience on high-availability, scalable systems.
• Deep React experience using modern state / data patterns (Redux Toolkit, React Query / SWR, Zustand, Context), with the ability to work within existing Redux / Redux-Saga setups.
• Excellent HTML5 / CSS3 skills (Flexbox, Grid), responsive / mobile-first design, and CSS preprocessors (SASS / LESS).
• Strong testing discipline with Jest, React Testing Library, and Playwright or Cypress; understands TDD principles.
• Proven experience with performance profiling and optimization (bundle size, rendering, Web Vitals, memory leaks).
• Strong experience consuming REST APIs and collaborating with backend teams.
• Comfortable with Git and modern delivery workflows (PRs, code reviews, CI / CD).
• Hands-on experience using agentic AI coding systems for multi-step engineering tasks.
• Strong grasp of core agentic AI foundations, including : AI coding tools (e.g. Claude Code, Copilot, Gemini CLI, ChatGPT Codex), Context & memory management, Commands, sub-agents, and MCP servers, Structured outputs (JSON schemas), Function / tool-calling best practices (e.g. CLI tool usage).

Nice to have

• Experience with monorepos (Nx, Turborepo).
• Frontend observability (Sentry, Datadog RUM, OpenTelemetry).
• Knowledge of Next.js, UI frameworks (Chakra UI).
• Familiarity with GraphQL and large-scale data systems (RDBMS / NoSQL).
• Experience with real-time technologies (WebSockets, WebRTC).
• Service Workers, streaming technologies, and advanced caching.
• Advanced agentic AI patterns, such as hooks, RAG, cost optimization, self-checking / critique loops, tool mocking for tests, and A / B testing prompts or agents.