KastleSan Francisco, CABuilds and deploys fine-tuned LLMs and AI agents for real-time voice interactions in consumer lending, ensuring compliance and scalability. Requires 2+ years production ML/AI experience with Python, PyTorch/TensorFlow, and LLM frameworks.
Build and optimize the RL training framework and infrastructure for large-scale workloads at SpaceXAI, from ablations to production runs. Requires experience with distributed systems and proficiency in Python, JAX, Rust, or C++.
Build and productionize vision-language models for document understanding at LlamaIndex. Focus on training, fine-tuning, synthetic data, benchmarking, and turning research prototypes into accurate, low-latency production systems for real-world PDFs, tables, and enterprise docs. Requires 3+ years ML engineering/applied research experience with strong PyTorch skills.
Build and optimize the high-performance inference platform serving Grok at massive scale. Design distributed serving infrastructure, low-level GPU optimizations, quantization, speculative decoding, and CI/CD for production reliability and low latency.
Research Engineer embedded in large-scale multimodal model training at Black Forest Labs (creators of FLUX). Own performance, stability, and low-precision optimizations for production training runs; profile, debug distributed systems, implement GPU kernels, and partner with researchers to ship frontier generative models.
Develops and operates large-scale search engine infrastructure, including retrieval algorithms, indexing, and ML ranking models integrated with Grok AI. Requires experience with search systems, vector databases, and production ML in Python, Go, or Rust.