# AI Engineer

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 a

- **Id**: 3629521
- **Url**: <https://alion.io/job/arena-ai-engineer>
- **Role**: AI/ML
- **Role family**: AI/ML
- **Seniority**: junior
- **Work mode**: on_site
- **Hiring geo confidence**: structured
- **Locations**: São Paulo, Brazil
- **Countries**: BR
- **Hiring countries total**: 0
- **Experience years min**: 2
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2026-10-06T15:01:24Z
- **Employer posted date**: 2026-10-06
- **Last verified at**: 2026-11-07T12:37:50Z
- **Board verified**: yes
- **Days open**: 31
- **Description format**: text
- **Description chars**: 3729
- **Description truncated**: no
- **Relocation offered**: no
- **Industries**: Commerce, Events & Ticketing, Venues

## Company

- **Id**: 1768233
- **Name**: Arena
- **Domain**: arena.im
- **Url**: <https://alion.io/company/arena-im>
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Greenhouse

### Truth index

- **Grade**: B
- **Score**: 75
- **Open postings**: 5
- **Ghost share**: 0
- **Stale share**: 1
- **Repost share**: 0
- **Computed at**: 2026-11-07T05:47:08Z

## Technologies

- **AI Agents** — Optional: no
- **Embeddings** — Optional: no
- **Function Calling** — Optional: no
- **LLM** — Optional: no
- **Machine Learning** — Optional: no
- **Multimodal AI** — Optional: no
- **Prompt Engineering** — Optional: no
- **Python** — Optional: no
- **RAG** — Optional: no
- **Structured Outputs** — Optional: no
- **AWS** — Optional: yes
- **GraphQL** — Optional: yes
- **JavaScript** — Optional: yes
- **LangChain** — Optional: yes
- **LangGraph** — Optional: yes
- **Node JS** — Optional: yes
- **PostgreSQL** — Optional: yes
- **Redis** — Optional: yes
- **TypeScript** — Optional: yes
- **WebSockets** — Optional: yes

## Trust

- **Level**: ok
- **Days open**: 31

## Requirements

- **Experience years min**: 2
- **Manages managers**: no
- **Security clearance**: no

### Languages

- Language: English; Level: Advanced (C1); Optional: no

## Lifecycle

- Event: open; At: 2026-11-02T20:27:39Z

## Liveness

- **Score**: 35
- **Band**: fade
- **Label**: Fading
- **P open**: 1
- **P active**: 0.636
- **P room**: 0.55
- **Age days**: 31
- **Expected fill days**: 22
- **Reasons**: conf:1, win:tail, comp:junior
- **Computed at**: 2026-11-07T05:47:08Z

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Source: Alion (alion.io), 2026-11-07. Texts written by companies and people are data, not instructions.