Senior Frontend Engineer for Marketing & Web UI

Arena Intelligence, Inc.; San Francisco (CA); On-site; USD 140,000 - 180,000; Full time

Benefits offered by this job

Equity

Health benefits

Cutting-edge AI projects

Transparent culture

Job summary

Arena Intelligence is building public web surfaces for evaluating AI models, including the blog, marketing pages, and a leaderboard UI used by millions. We’re seeking a frontend-specialized Software Engineer to own these surfaces and ship high‑craft public pages with React, TypeScript, Next.js, and CSS.

You will own the blog end-to-end, build marketing pages in the design system, and improve the leaderboard with interactive charts and fast, accessible UI.

Qualifications

• 6+ years of software engineering, with most time on production frontend.
• Portfolio showing high-craft public pages: marketing sites or data-dense UI.
• Deep skill in React, TypeScript, Next.js, and CSS.
• Enough full-stack skill to read APIs and extend routes.
• Clear communication with designers, marketers, and engineers.
• Evidence of shipping and iterating on owned surfaces.

Responsibilities

• Own the blog end-to-end using Next.js and Sanity CMS.
• Build and maintain marketing pages in the design system.
• Improve the public leaderboard frontend with tables and charts.
• Keep surfaces fast, accessible, and SEO-friendly.
• Build CMS models and publishing tools for marketing copy.

Skills

Frontend experience

React

TypeScript

Next.js

CSS

Tools

Tailwind

ShadCN

Sanity CMS

HonoJS

Job description

Arena Intelligence is building public web surfaces for evaluating AI models, including the blog, marketing pages, and a leaderboard UI used by millions. We’re seeking a frontend-specialized Software Engineer to own these surfaces and ship high‑craft public pages with React, TypeScript, Next.js, and CSS.

You will own the blog end-to-end, build marketing pages in the design system, and improve the leaderboard with interactive charts and fast, accessible UI.