Senior Research Engineering Scientist
Core
Research and engineering across the full lifecycle of large language model development for enterprise use cases, including data curation, pretraining, fine-tuning, and evaluation.
Role type
Senior Research Engineering Scientist (LLM)
Builds
Custom enterprise language models and training pipelines for ServiceNow's AI platform
Domain
Enterprise AI / Large Language Models
Deliverable
production ML models
Required skills
LLM post-training (SFT, distillation), Reinforcement Learning (PPO, GRPO, DPO), Distributed training frameworks (FSDP, DeepSpeed, Megatron), Synthetic data generation, Data curation at scale, Transformer architectures, Python (expert level)
Preferred skills
Evaluation and benchmarking harnesses, Pretraining experience, Inference/serving technologies (vLLM, SGLang), Top-tier AI publications, AI productivity tools integration
Technologies
FSDP, DeepSpeed, Megatron, vLLM, SGLang, Python
Responsibilities
Research, propose, implement, train, and evaluate models and techniques end-to-end; Build and maintain training pipelines and evaluation harnesses; Collaborate with scientists, engineers, and product managers; Own work from design through delivery
Seniority
Senior, hands-on IC
