πUnited Kingdom
Senior Front End Engineer
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Arena
πRemote - Brazil
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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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