---
title: 'AI Engineer at Arena.im'
canonical: 'https://feeny.ai/job/ai-engineer-arena-im-sao-paulo-6xx4pdpb4qbh'
type: 'job'
last_seen: '2026-10-12'
---

# AI Engineer at Arena.im

- **Company:** Arena.im
- **Location:** São Paulo, Brazil
- **Posted:** 2026-10-06
- **Last confirmed live:** 2026-10-12
- **Apply:** https://job-boards.greenhouse.io/arenaim/jobs/4740889005

## 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, with +50M users having conversations on Arena every month and engaging with our AI Agents.

Arena is also expanding its AI product portfolio with MyAvatar.AI, a multimodal platform that enables users to create intelligent, personalized AI avatars through voice, video, and conversational interfaces.

Sometimes you're stuck in a job that doesn't make sense, building AI features that never make it into production. If you enjoy turning cutting-edge AI into real products, solving complex problems, and seeing your work used by millions of users — then Arena is the company you're looking for.

About the Role:

We’re looking for an AI Engineer to build and scale AI-powered experiences across Arena and MyAvatar.AI. You’ll work closely with Engineering, Product, and other AI-focused teams to design, implement, evaluate, and improve AI systems that power conversational, voice, and multimodal experiences.

What you will be doing:

- Build and integrate AI-powered features and services into production applications.
- Develop LLM-powered applications using APIs, agents, RAG, tool calling, and structured outputs.
- Design and improve AI pipelines for conversational, voice, and multimodal experiences.
- Evaluate model quality, reliability, latency, and cost, and continuously improve AI performance.
- Build experiments and prototypes, then turn successful approaches into scalable production systems.
- Collaborate with Product and Engineering to translate business and user problems into practical AI solutions.

Must-Have Experience:

- 2+ years of experience in AI Engineering, Machine Learning Engineering, Software Engineering, or a similar technical role.
- Strong Python programming skills and experience building production software.
- Hands-on experience with LLMs, Generative AI, and AI APIs.
- Experience building applications with RAG, embeddings, vector databases, agents, or tool calling.
- Strong understanding of AI evaluation, prompt engineering, model behavior, and production trade-offs.
- Experience working with APIs, cloud infrastructure, and distributed systems.
- Strong problem-solving skills and ability to move quickly from prototype to production.
- Fluent English.

Nice-to-Have Experience:

- Experience with LangChain and LangGraph for building LLM applications, agents, and AI workflows.
- Experience with Node.js and TypeScript or other backend languages.
- Experience with AWS, serverless architectures, and cloud-native applications.
- Experience with real-time systems, WebSockets, GraphQL, or APIs.
- Experience with MongoDB, PostgreSQL, Redis, or other distributed data systems.

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

- [Marketing Growth Manager](https://feeny.ai/job/marketing-growth-manager-arena-im-sao-paulo-n0pm4st9y4tj) — São Paulo, Brazil
- [Operations Manager](https://feeny.ai/job/operations-manager-arena-im-sao-paulo-tnhmakdmr5gm) — São Paulo, Brazil
- [Director of Engineering](https://feeny.ai/job/director-of-engineering-arena-im-sao-paulo-ymqpwbxexw6d) — São Paulo, Brazil
- [Account Executive](https://feeny.ai/job/account-executive-arena-im-sao-paulo-be5yg7afmhe0) — São Paulo, Brazil
- [Sales Manager](https://feeny.ai/job/sales-manager-arena-im-sao-paulo-g0w6rzpj9sdk) — São Paulo, Brazil
- [Customer Success Manager](https://feeny.ai/job/customer-success-manager-arena-im-sao-paulo-pjwdstypkhp4) — São Paulo, 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
- [Front end Engineer  [Brazil]](https://feeny.ai/job/front-end-engineer-brazil-arena-im-brazil-42sdv701f8qb) — Brazil
- [Product Manager](https://feeny.ai/job/product-manager-arena-im-sao-paulo-zk1qytpff58h) — São Paulo, Brazil