Senior Product Engineer, Fullstack

<h3><strong>About the Role</strong></h3> <p>Together AI&39;s product is what developers touch every day — Playground, Model Garden, Fine-Tuning, File Management, Batch Processing, Model Evals. These surfaces are how users experience the platform, and they need to be fast, intuitive, and something developers genuinely love using. That&39;s what this role is about.</p> <p>We&39;re growing the Product Engineering team and looking for a fullstack engineer who&39;s motivated by shipping things users genuinely value — not features that just look good in a slide deck. You&39;ll plug directly into new and existing workstreams and start shipping quickly, working across our core product surfaces to improve existing capabilities and build new ones.</p> <p>This is a high-ownership role on a small, fast-moving team, where one strong engineer moves the needle visibly. You&39;ll see your work in production, instrument and measure it, and use that to shape what comes next.</p> <h3><strong>Responsibilities</strong></h3> <ul> <li>Ship improvements and new capabilities across Together AI&39;s core product surfaces — Playground, Model Garden, Fine-Tuning, File Management, Batch Processing, and Model Evals</li> <li>Own projects and features end-to-end, from data model and API integration through the user interface</li> <li>Collaborate closely with other engineers to build clean, typed, reusable interfaces in our web application</li> <li>Instrument and measure what you ship — add product analytics, monitor system health, and prove users are getting value with data</li> <li>Work across design, product, and engineering to ship things that unlock user value</li> <li>Raise the bar on frontend and fullstack quality across the team through code review and collaborative architecture decisions</li> </ul> <h3><stron