A

Arena Tech Stack

Community platform for AI model evaluation and real-world performance benchmarking

Research Services San Francisco, California 51–200 employees Founded 2025 Privately Held

Arena operates a community-driven AI evaluation platform where millions of users test frontier models and generate ground-truth performance signals. The tech stack—Python, PyTorch, Next.js, PostgreSQL, Apache Airflow—reveals an ML-native backend paired with a modern web frontend, built to handle billions of requests. Active projects span open-source dataset releases, real-time data pipelines, and platform security, while hiring is heavily weighted toward senior engineers and researchers, indicating rapid scaling of both infrastructure and research capabilities.

Tech Stack 32 technologies

Core StackPython Pandas NumPy Apache Spark PyTorch Next.js Tailwind CSS PostgreSQL Scala Okta Intune CrowdStrike Cloudflare Apache Airflow Salesforce ServiceNow shadcn/ui Vitest SQL R RLHF Google Workspace Cloudflare One Okta Workflows Google APIs PowerShell Bash IBM X LinkedIn+1 more

What Arena Is Building

◆Challenges

Scaling real-time data infrastructure
Scaling world-class team
Scaling analytical workloads
Inclusive hiring
Protect platform integrity
Prevent abuse and fraud
Resilience against real-world attacks
Low-latency pipeline design
Repeatable recruiting practices
Scaling infrastructure billions of requests

▲Active Projects

Open-source dataset and code releases
Build pipelines via targeted sourcing
Analytics-layer data models and pipelines
Drive offer strategy and negotiations
Platform-wide security features
Threat modeling and architecture reviews
Secure-by-default frameworks for internal teams
Scalable real-time data and api infrastructure
Low-latency pipelines for event streams
Evaluation signal surface

Hiring Activity

Accelerating15 roles · 15 in 30d

Department

Engineering

6

Data

3

Research

3

Sales

2

HR

1

Marketing

1

Security

1

Seniority

Senior

13

Junior

1

Lead

1

Manager

1

Mid

1

Company intelligence

Find more companies like Arena by tech stack, pain points and active projects

Get started free

About Arena

Arena is a community platform founded by UC Berkeley researchers that aggregates real-world AI model performance through direct user feedback. The company operates a public leaderboard grounded in builder, researcher, and creator interactions with frontier AI models. Infrastructure priorities include handling billions of requests, scaling low-latency event pipelines, and building analytical layers on top of evaluation signals. The organization is based in San Francisco and actively hiring across engineering, data, research, and go-to-market functions.

HeadquartersSan Francisco, California

Company Size51–200 employees

Founded2025

Hiring MarketsUnited States

Frequently Asked Questions

What tech stack does Arena use?

Python, PyTorch, NumPy, Pandas, Apache Spark for ML and data processing; PostgreSQL for persistence; Next.js and Tailwind CSS for frontend; Apache Airflow for orchestration; Cloudflare for infrastructure; Okta for identity; Salesforce for operations.

What is Arena working on?

Open-source dataset releases, real-time data and API infrastructure, low-latency event pipelines, analytics-layer data models, platform security features, and evaluation signal surface development. Infrastructure scaling for billions of requests is a core focus.