---
title: 'Front end Engineer  [Brazil] at Arena.im'
canonical: 'https://feeny.ai/job/front-end-engineer-brazil-arena-im-brazil-42sdv701f8qb'
type: 'job'
last_seen: '2026-09-07'
---

# Front end Engineer  [Brazil] at Arena.im

- **Company:** Arena.im
- **Location:** Brazil
- **Work type:** remote
- **Posted:** 2025-02-06
- **Last confirmed live:** 2026-09-07
- **Apply:** https://job-boards.greenhouse.io/arenaim/jobs/4526109005

## Job description

About Arena:

Arena is a Series A company backed by top-tier investors such as CRV, Redpoint and Craft Ventures. Arena offers a unique work environment and the chance to collaborate with diverse teammates across multiple countries, with a culture of ownership (autonomy, growth, and responsibility).

We are a startup created in Silicon Valley with a mission to build communities for creators, publishers and brands with the power of AI. Companies using Arena include Disney, Reuters, Fox, Red Bull and NFL. We have +2,000 customers in 150 countries and with +50M users having conversations on Arena per month and engaging with our Agent AI.

Sometimes you're stuck in a job that doesn't make sense. Refactoring code from ages ago, the stack is miles away from what it's supposed to be. If you love a good challenge, enjoy solving meaningful problems, and want to be a part of one of the fastest-growing AI startups in the Silicon Valley — then Arena is the company you're looking for.

What you will be doing:

As a front end engineer, you will have an enormous impact on making our app and API service faster, more scalable and more flexible. Our team is made up of very experienced engineers, some with more than 10 years of experience. You will collaborate with product and engineering teams to ship AI-powered features and make the existing ones perform orders of magnitude faster.

The challenges:

- 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.
- High availability: our code is running on homepages of the most visited websites and apps in the internet.

Our Stack:

- React.js & Next.js - The foundation of our modern frontend applications.
- TypeScript - Ensuring type safety and maintainable code.
- Web Components - Creating reusable and framework-agnostic UI elements.
- Advanced CSS - Leveraging CSS-in-JS, animations, and layout mastery.
- Figma - Collaborating closely with designers to bring UI/UX visions to life.
- Backend integration: GraphQL, Websocket, Rest

Work Experience:

- 3+ years of relevant Frontend programming experience

Must-Have Experience:

- TypeScript
- React
- Next.js
- GraphQL
- Git
- WebSocket
- Monorepo

Nice-to-Have Experience:

- Styled Components
- Gitflow
- Github Actions
- Webpack
- Turborepo
- Google Firebase/Firestore
- Node.js

Example Projects You’ll Be Working on:

- 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
- Build a JavaScript SDK
- Build and design AI features and AI agents

We also have some sweet perks like:

🔥 Be a part of the team in Silicon Valley and join a global team

💪 A team of exceptional engineers leading the cutting-edge AI Agents.

💶 Competitive salary package & benefits

⛱️ 4 weeks of paid time-off

📖 Learning and Development budget

🚀 Key moment to join Arena in terms of growth and opportunities

💻 Ability to put your stamp on real-world AI applications that serve millions of users.

📚 Fast-learning environment, entrepreneurial and strong team spirit

🌍 Multiple nationalities: cosmopolite & multi-cultural mindset

💆‍♀️ Our people matter, work-life balance is important at Arena

## About Arena.im

## Company Overview
- **One-liner**: Arena provides an AI-powered platform for brands and publishers to build, engage, and monetize interactive communities directly on their websites and apps.
- **Entity Type**: Private (Series A)
- **Headquarters**: San Francisco, California, United States
- **Founded**: 2017 (incorporated as Stationfy Inc.)
- **Founders**: Paulo Martins

## Core Business
- Primary industry/industries: Technology, Information, and Internet; AI-powered community engagement; Media & Publishing
- Target customers: B2B, serving publishers, media companies, sports & entertainment organizations, and brands/e-commerce businesses
- Mission or purpose statement: To help brands and audiences have real, meaningful conversations online, making interactions more engaging, authentic, and personal.

## Products & Services
- **Arena Community Platform**: An all-in-one engagement suite that allows companies to add interactive features like comments, polls, live blogs, group chat, and AI-powered content streams to their website with a no-code deployment. Designed to turn anonymous visitors into identified users.
- **Arena Live Chat**: A chat solution focused on community interaction and real-time audience engagement.
- **Arena Enterprise**: An advanced tier offering collaborative tools, limitless customization, robust workflows, top-tier security, and scalability for large organizations.
- **Monetization & Ads**: Tools to integrate with ads, monetize audiences, and generate leads directly from the community.
- **Advanced Analytics**: A dashboard to track impact on key business indicators, measure growth, and gain insights into user behavior and segmentation.

## Market Standing
- **Valuation/Market Cap**: Not publicly disclosed
- **Key Metric**: Annual Revenue of $7.5M (LinkedIn estimate) | Total Funding of $16.42M
- **Notable Investors/Partners**: CRV (led Series A), Redpoint eventures (led Seed), Techstars (led Pre-Seed)
- **Growth Signals**: Serves 10,000+ organizations; operates in 5 countries (Brazil, United Kingdom, India, Pakistan, US); employee count of 41 with a strong technical team (18 people); LinkedIn follower growth of +54.1% year-over-year.

## Competitive Advantages
- **No-Code Deployment**: Enables any website to integrate a full community suite quickly without engineering resources.
- **First-Party Data Focus**: Captures rich user profiles based on actions, interests, and intent, which is increasingly critical in a privacy-first (GDPR-compliant) digital landscape.
- **AI-Powered Automation**: Uses AI for content generation, personalized recommendations, and automating community management tasks.
- **Real-Time Scalability**: Blazing-fast technology proven to handle millions of users during major worldwide events.

## Strategic Focus
- Deepening its AI capabilities to further automate engagement and personalization.
- Expanding its footprint across key verticals: publishing, sports, entertainment, and e-commerce.
- Scaling its sales and customer success operations, particularly in the Enterprise segment.
- Strengthening its position as a leader in first-party data community solutions.

## Why Work Here
- **Innovative Environment**: A dynamic Silicon Valley startup at the forefront of AI and community-building technology.
- **Global & Remote-Friendly Team**: With offices in San Francisco and a large remote team in Brazil, the company offers flexibility. Open roles are listed as remote for Brazil-based candidates.
- **Engineering-Led Culture**: The largest department is Technical (18 people), indicating a strong focus on product and engineering excellence. The tech stack is modern and diverse (React, Python, Django, Typescript, Node.js, etc.).
- **Growth Trajectory**: As a well-funded Series A company with significant revenue ($7.5M) and a growing customer base, it offers the potential for high impact and career growth.
- **Mission-Driven**: The work directly impacts how millions of people interact with content and brands online, making it a compelling space for those interested in community, media, and user experience.

## Sources
1. [arena.im](https://arena.im/)
2. [LinkedIn](https://www.linkedin.com/company/arenaim)
3. [Built In](https://builtin.com/company/arenaim)
4. [Greenhouse](https://job-boards.greenhouse.io/arenaim)

## Other roles at Arena.im

- [Cloud Engineer](https://feeny.ai/job/cloud-engineer-arena-im-brazil-vyz1pve7t8xa) — Brazil
- [QA Engineer](https://feeny.ai/job/qa-engineer-arena-im-brazil-fvgrtem805h9) — Brazil
- [Back end Engineer [Brazil]](https://feeny.ai/job/back-end-engineer-brazil-arena-im-brazil-ew879tjawbkx) — Brazil
- [Product Manager [Brazil]](https://feeny.ai/job/product-manager-brazil-arena-im-brazil-zk1qytpff58h) — Brazil
- [Business Development Representative [BDR Brazil]](https://feeny.ai/job/business-development-representative-bdr-brazil-arena-im-brazil-z6fc2qjkjjpa) — Brazil