Arena

DevOps Engineer

• Build and orchestrate API-based products from the ground up. Design and implement low-latency, high-reliability APIs for leaderboards, models, and arenas.
• Ship enterprise-grade infrastructure. Build the systems enterprise customers expect: rate limiting, authentication, usage metering, cost attribution, audit logging, and SOC 2 compliance.
• Build deep observability. Instrument infrastructure with distributed tracing, latency breakdowns, token-level usage tracking, and real-time dashboards so customers (and we) can see exactly what's happening.
• Build AI-centered products. Integrate with our core evaluation platform, Arena data, and customer-specific benchmarks. Collaborate with the research team to turn novel ideas into full-featured products.

Site Reliability Engineer

Backend Engineer

• Build API-based products from the ground up. Design and ship the low-latency, high-reliability APIs and services that power Leaderboards, Evals, and Arena data products — clean, versioned, and built for the developers who consume them.
• Turn evaluations into product. Partner with the research team to take novel eval methods and make them durable, full-featured products: scoring pipelines, data models, and the APIs that expose them.
• Ship enterprise-grade backends. Usage metering, cost attribution, billing integration, authentication, RBAC, multi-tenancy, and audit logging — the systems enterprise customers expect.
• Own the data architecture. Unify our public and private evaluation data, design schemas that hold up as the product grows, and make Arena’s data queryable, consistent, and fast.
• Flex across the stack. Contribute to the backend of our Leaderboards and Evals platforms when needed, helping unify our public and private data architectures.

Growth Marketing

• Own and scale Arena's email and lifecycle strategy across onboarding, activation, retention, and re-engagement
• Design and execute multi-channel lifecycle programs (email, in-product messaging, and notifications) that drive meaningful user engagement
• Build segmentation and personalization frameworks rooted in behavioral data and user intent
• Partner with Product and Engineering to implement lifecycle tooling, event tracking, and automation infrastructure
• Develop and run A/B and multivariate tests across subject lines, content, timing, and frequency to continuously improve activation, retention, and conversion
• Analyze campaign and funnel performance, identify opportunities, and translate findings into clear strategic recommendations
• Write compelling, on-brand copy across all lifecycle touchpoints from developer digests to re-engagement sequences
• Work cross-functionally with Product, Data, and Marketing to align lifecycle efforts with product launches and growth initiatives

Growth Marketing Manager, Email and Lifecycle

People Operations

• Build and evolve foundational programs including onboarding, performance management, compensation, career development, and other initiatives that support company growth.
• Serve as a trusted advisor to leaders, providing guidance on team effectiveness, organizational design, employee relations, and people decisions.
• Create lightweight systems and processes that improve consistency while preserving speed and flexibility.
• Help shape an environment where employees can do their best work, driving initiatives that strengthen engagement, communication, and team health.
• Ensure the fundamentals are operating smoothly, from policies and documentation to compliance and employee lifecycle management.
• Partner with leadership on headcount planning, organizational structure, and evolving team needs.
• Identify gaps before they become bottlenecks, building the frameworks and tools needed to support a growing organization.

People Operations Lead

Cloud Engineer

• Real-time messaging infrastructure supporting 100,000 concurrent users per customer application;
• High performance systems with API responses in the 10ms range;
• Highly scalable architecture using auto-scaling policies, distributed systems and container orchestration;
• High availability infrastructure powering homepages of some of the most visited websites and apps on the internet;
• Managing distributed databases for our Data Platform storing every user engagement;
• Building infrastructure that enables product teams to ship fast with reliability and observability.

QA Engineer

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Frontend Engineer

• As a front end engineer, you will have an enormous impact on making 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.
• High availability: our code is running on homepages of the most visited websites and apps in the internet.

Front end Engineer

• Collaborate with product and engineering teams to ship AI-powered features
• Make the app and API service faster, more scalable, and flexible
• Design and build AI Agents, RAG pipelines, model fine-tuning, and crawling.
• Ensure high performance and availability of applications

Back end Engineer

Business Development Rep

• Qualify leads from marketing campaigns as sales opportunities
• Qualify leads from self service sign ups
• Contact potential prospects through cold calls and emails (Outbound)
• Present our company to potential prospects
• Iterate and experiment with our messaging and pitch
• Identify prospect's needs and suggest appropriate products/services
• Set up meetings or calls between (prospective) customers and Sales Executives, though an Outbound playbook
• Use discovery meetings to qualify prospects
• Connect current customer use cases to potential prospects' use cases
• Be capable of short product demos
• Participate in product feedback sessions