Research Engineer, Training & Inference

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Наша компания

At Harmonic, we are building a mathematical reasoning engine that operates with absolute precision. While most AI makes maximum-likelihood guesses, Harmonic's Aristotle uses Lean 4 and reinforcement learning to verify its reasoning and results. Following our Gold Medal-level performance on the 2025 International Math Olympiad (IMO) and the successful resolution of long-standing open problems, we are proving that AI can master the most rigorous domains of human thought. Backed by some of the world’s most prominent investors, we are intentionally scaling an elite technical team.

Чем предстоит заниматься

We are developing reinforcement learning systems at a scale where standard abstractions frequently fail. Unlike labs that operate primarily through high-level wrappers, we own the entirety of our RL stack. This ownership spans from low-level environment simulators and custom communication primitives to our distributed training loops and inference engines

We are seeking engineers who view existing libraries as a baseline and the hardware speed itself as the true target. You will be responsible for the architecture powering our agents, with a relentless focus on maximizing the throughput of our reinforcement learning and production workflows

Total Stack Ownership: Maintain and optimize our proprietary RL training and serving infrastructure. You have the authority to refactor any layer—from the Python API down to the CUDA kernels—to achieve peak performance for foundation model workloads

Optimized Training: maximize the throughput of our reinforcement learning system from data generation to model training with sharded multi-node training and inference algorithms

High-Performance Serving: optimize our inference stack for high-throughput reinforcement learning and low-latency LLM production traffic. Tune the inference engine, router, and scheduler, down to custom kernels if need be

Compute Optimization: Identify and resolve performance bottlenecks within our distributed clusters, ensuring optimal throughput and memory efficiency for multi-billion parameter models, balancing memory constraints with compute-heavy training cycles

Наши требования

MS or PhD in Computer Science, Mathematics, or a related field

5+ years of relevant, hands-on industry experience

Proficiency in C++

Experience writing or improving kernels (Triton, CuTeDSL, TileLang, CUDA, CUTLASS, ThunderKittens) to resolve low-level bottlenecks

Proven success deploying performant inference at scale using open-source or custom inference engines, routers, etc

Direct experience scaling models via FSDP, Tensor Parallelism, or related sharding techniques on multi-node GPU clusters

Experience designing reinforcement learning systems for high-throughput training and asynchronous data sampling

BS in Computer Science or a related technical field, or equivalent industry experience

2+ years of relevant, hands-on industry experience

Proficiency in Python

Experience building or maintaining components within ML frameworks (e.g., PyTorch, JAX, or TensorFlow)

Proficiency in either

Understanding of distributed training concepts and collective communication primitives (e.g., NCCL)

Мы предлагаем

Unlimited PTO

401(k) matching

100% employer-paid health, vision, and dental benefits for employees and 50% coverage for dependents. Harmonic offers varied health coverage options to select what is best for you and your family

Health Savings Account (HSA) available for qualifying health plans

Дополнительно

Practical experience deploying and profiling models on GPU-accelerated cloud infrastructure

Harmonic

Palo Alto

ГрейдMiddle

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Опубликовано7 мая

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