Machine Learning Engineer - Inference

Together AI is seeking a Machine Learning Engineer to join our Inference Engine team, focusing on optimizing and enhancing the performance of our AI inference systems. This role involves working with state-of-the‑art large language models and ensuring they run efficiently and effectively  you are passionate about AI inference, PyTorch, and developing high-performance systems, we want to hear from you. This position offers the chance to collaborate closely with AI researchers and engineers to create cutting‑edge AI solutions.

Responsibilities

• Design and build the production systems that power the Together AI inference engine, enabling reliability and performance at scale.

• Develop and optimize runtime inference services for large-scale AI applications.

• Collaborate with researchers, engineers, product managers, and designers to bring new features and research capabilities to the world.

• Conduct design and code reviews to ensure high standards of quality.

• Create services, tools, and developer documentation to support the inference engine.

• Implement robust and fault-tolerant systems for data ingestion and processing.

Requirements

• 3+ years of experience writing high-performance, well-tested, production-quality code.

• Proficiency with Python and PyTorch.

• Demonstrated experience in building high performance libraries and tooling.

• Excellent understanding of low-level operating system concepts including multi-threading, memory management, networking, storage, performance, and scale.

• Preferred:
Knowledge of existing AI inference systems such as TGI, vLLM, Tensor

RT-LLM, Optimum.

• Preferred:
Knowledge of AI inference techniques such as speculative decoding.

• Preferred:
Knowledge of CUDA/Triton programming.

• Nice to have:
Knowledge of Rust, Cython and compilers.

About 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. 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.

Our team has been behind technological advancements such as Flash Attention, Hyena, Flex Gen, and Red Pajama. We invite you to join a passionate group of researchers and engineers in our journey to build the next‑generation AI infrastructure.

Compensation

We offer competitive compensation, startup equity, health insurance, and other competitive benefits. The US base salary range for this full-time position is $160,000 – $230,000 + equity + benefits. Our salary ranges are determined by location, level, and role. Individual compensation will be determined by experience, skills, and job-related knowledge.

Together AI is an Equal Opportunity Employer and is proud to offer equal employment opportunities to everyone regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status, and more.

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