ServiceNow
Senior Research Engineering Scientist
$186K–$315K
Santa Clara, California, United States · Senior · Full-time · Posted Oct 21, 2026
- Experience
- 3 or more years of relevant experience with a Bachelor's degree; 3 or more years with a Master's degree; a PhD or equivalent experience.
- Education
- Bachelor's degree, Master's degree, or PhD or equivalent experience.
About the job
Researches, develops, trains, and evaluates enterprise large language models, while building scalable and reproducible training and evaluation systems.
What you'll do
- Research, implement, train, and evaluate models and techniques end to end.
- Build and maintain reproducible training pipelines and evaluation harnesses.
- Collaborate with research, engineering, and product teams to deliver AI solutions.
What they ask for
- Expertise in LLM post-training, including supervised fine-tuning and distillation, and reinforcement learning methods such as PPO, GRPO, DPO, and reward modeling.
- Hands-on experience with distributed, large-scale training frameworks and parallelism strategies.
- Expertise in Python, with strong OOP and design pattern fundamentals.
- Ability to read current research and rapidly prototype and experiment with new ideas.
Nice to have
- Experience in evaluation and benchmarking, pretraining, or inference and serving technologies such as vLLM or SGLang.
- Publications at top-tier venues or fluency with AI productivity tools such as Claude Code and Codex.
Pay
$185,500 - $315,400 USD base salary
Tools
Python, FSDP, DeepSpeed, Megatron, vLLM, SGLang, Claude Code, Codex
AI focus
Develops enterprise LLMs across post-training, reinforcement learning, data curation, synthetic data generation, evaluation, and training efficiency.
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