Jobs at Together AI

Together AI is a research-driven artificial intelligence company. We believe open and transparent AI systems will drive innovation and create the best outcomes for society, and together we are on a mission to significantly lower the cost of modern AI systems by co-designing software, hardware, algorithms, and models. We have contributed to leading open-source research, models, and datasets to advance the frontier of AI, and our team has been behind technological advancement such as FlashAttention, Hyena, FlexGen, and RedPajama. We invite you to join a passionate group of researchers and engineers in our journey in building the next generation AI infrastructure.

Together AI is building the full-stack infrastructure layer for open-source and enterprise AI, positioned as the independent alternative to hyperscalers and closed labs. The company offers a distributed AI cloud that enables developers to train, fine-tune, and deploy models cost-effectively, paired with one of the deepest research pipelines in the industry. From the release of RedPajama-V2, the largest open dataset ever created, to breakthrough techniques like FlashAttention, FlashDecoding, and Medusa, Together’s research contributions are shaping how frontier models are trained and optimized across the industry. Its platform supports over 200 open-source and custom models, delivering enterprise-grade inference APIs and GPU clusters that abstract away the complexity of training and deployment. By combining open-source flexibility with high-performance infrastructure, Together has become the backbone for teams looking to build differentiated AI products without being locked into closed ecosystems.

The growth trajectory underscores the scale of demand. Together AI went from zero to $100 million in ARR in just 10 months, an extraordinary ramp that places it among the fastest-scaling companies in the AI infrastructure space. Customers ranging from Fortune 500s like Salesforce, Zoom, and Mozilla to hundreds of startups rely on Together to run workloads that would otherwise require scarce GPU capacity and expensive in-house teams. The business model captures value across the stack: dedicated GPU clusters for training, inference APIs for serving, and fine-tuning services for enterprise customization. With more than $200 million raised from General Catalyst, Salesforce Ventures, Kleiner Perkins, and Emergence Capital, the company is scaling its infrastructure footprint and team aggressively. Founders Vipul Ved Prakash (who previously sold Topsy to Apple), Chris Ré and Percy Liang (Stanford AI Lab), Ce Zhang (distributed systems researcher), and Chief Scientist Tri Dao (creator of FlashAttention) bring a rare combination of academic credibility and entrepreneurial execution. With GPUs scarce, open-source models proliferating, and enterprises moving rapidly from experimentation to scaled deployment, Together AI is positioned to be the leading independent AI cloud.

Written as of August 2025