Senior Front End Engineer

Arena Logo

Arena

πŸ“Remote - Brazil

Summary

Join Arena, a fast-growing Silicon Valley AI startup, as a Senior Frontend Engineer and make a significant impact on our app and API. Collaborate with experienced engineers to build and enhance AI-powered features, focusing on speed, scalability, and flexibility. You'll tackle challenging projects involving real-time messaging, AI application design, and high-performance web application development. We offer a competitive salary and benefits package, including 5 weeks of paid time off, a learning and development budget, and a supportive, collaborative work environment. This is a key moment to join Arena and contribute to impactful AI applications used by millions.

Requirements

  • 6+ years of relevant Frontend programming experience
  • TypeScript
  • React
  • Next.js
  • GraphQL
  • Git
  • WebSocket

Responsibilities

  • Make our app and API service faster, more scalable and more flexible
  • Collaborate with product and engineering teams to ship AI-powered features and make the existing ones perform orders of magnitude faster
  • Real-time messaging to support 500,000 concurrent users per customer application
  • Design and build AI applications, including Agents and model fine-tuning
  • Building for Performance - Delivering ultra-fast web applications optimized for performance
  • Complex Debugging - Investigating tricky issues and crafting robust solutions
  • Implement applications using Next.js framework
  • Build a real-time chat that can scale to 1M simultaneous users
  • Develop plugins for WordPress and Google Chrome
  • Implement high-performance widgets similar to Reddit, Discord, and Whatsapp
  • Build a JavaScript SDK
  • Build and design AI features and AI agents

Preferred Qualifications

  • Styled Components
  • Gitflow
  • Github Actions
  • Gatsby
  • Webpack
  • Monorepo
  • Google Firebase/Firestore
  • Node.js

Benefits

  • Competitive salary package & benefits
  • 5 weeks of paid time-off
  • Learning and Development budget

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