Senior Product Engineer, Fullstack

Together AI Together AI · Data AI · San Francisco, CA · Engineering

Fullstack engineer to build and improve Together AI's core product surfaces (Playground, Model Garden, Fine-Tuning, etc.), focusing on user experience and shipping features end-to-end. Requires strong JavaScript/TypeScript, React, and full-stack fluency, with a pragmatic approach and curiosity about AI/LLMs. Experience with agentic workflows is a plus.

What you'd actually do

  1. Ship improvements and new capabilities across Together AI's core product surfaces — Playground, Model Garden, Fine-Tuning, File Management, Batch Processing, and Model Evals
  2. Own projects and features end-to-end, from data model and API integration through the user interface
  3. Collaborate closely with other engineers to build clean, typed, reusable interfaces in our web application
  4. Instrument and measure what you ship — add product analytics, monitor system health, and prove users are getting value with data
  5. Work across design, product, and engineering to ship things that unlock user value

Skills

Required

  • JavaScript/TypeScript
  • React
  • Full-stack development
  • API integration
  • State management
  • UI development
  • Pragmatic engineering approach
  • Curiosity about AI and LLMs
  • Agentic workflows

Nice to have

  • TypeScript
  • Next.js
  • Tailwind
  • shadcn/ui
  • Product analytics (e.g., Amplitude)
  • Systems monitoring (e.g., Grafana)
  • CI/CD workflows
  • Go
  • Python

What the JD emphasized

  • shipping things users genuinely value
  • shipping quickly
  • high-ownership role
  • moves the needle visibly
  • see your work in production
  • instrument and measure it
  • shape what comes next
  • 4–7 years of experience building and shipping real product to real users
  • Strong JavaScript/TypeScript fundamentals
  • Strong React expertise in a large-scale, production environment
  • Full-stack fluency
  • A pragmatic approach to engineering
  • Curiosity about AI and LLMs
  • Adept at building and improving agentic workflows
  • Cross-functional "we ship it" mentality

Other signals

  • shipping product
  • user value
  • fullstack
  • AI/LLM curiosity