Senior Product Engineer (Fullstack)

Join Together AI as a Senior Product Engineer (Fullstack) and be part of a fast-moving team that values shipping products that users genuinely appreciate. In this high-ownership role, you will work across core product surfaces, improve existing capabilities, and build new ones. You will own projects and features end-to-end, collaborate closely with other engineers, and raise the bar on frontend and fullstack quality across the team. Enjoy competitive health insurance plans, income protection, retirement, and a flexible time off policy.

• Participer activement à l'amélioration des capacités existantes et à la construction de nouvelles fonctionnalités sur les surfaces de produit principales de Together AI.
• Assumer la responsabilité des projets et des fonctionnalités de bout en bout, de l'intégration du modèle de données et de l'API à l'interface utilisateur.
• Collaborer étroitement avec d'autres ingénieurs pour construire des interfaces propres, typées et réutilisables dans notre application web.
• Curiosity about AI and LLMs — you want to understand the models and products you're building on top of, not just the code around them
• Adept at building and improving agentic workflows, with good judgment for when to lean on AI and when not to
• Familiarity with product analytics (e.g., Amplitude) and systems monitoring (e.g., Grafana) is a plus
• A pragmatic approach to engineering — you know when to move fast and when to slow down, and you make that call based on user value
• Full-stack fluency: you connect the dots from data model to API design to state management to the UI, and know how to make the right call at each layer in service of clean, maintainable code and an intuitive user experience
• Experience with CI/CD workflows is a plus
• Experience with a backend language like Go or Python
• Strong React expertise in a large-scale, production environment
• Next.js, Tailwind, and shadcn/ui experience is a plus
• Strong JavaScript/TypeScript fundamentals; TypeScript experience highly valued
• 4–7 years of experience building and shipping real product to real users
• Cross-functional "we ship it" mentality — no narrow ownership, no finger-pointing