CareerPlanSign in

LLM Post-training Engineer Intern (Research & Product) - 2027 Summer

San Jose, United States of America💼 Internship🗓 2026-09-28

Core

Intern role supporting the development and optimization of post-training strategies for Large Language Models (LLMs) to power global multimedia products.

Role type

Research & Product Intern (LLM Post-training)

Builds

Production-ready AI applications for video understanding, translation, and content classification

Domain

AI / Machine Learning / Multimedia

Deliverable

production ML models

Required skills

Python, PyTorch or JAX, Transformer architectures, LLM training principles, dataset analysis

Preferred skills

LLM fine-tuning, RLHF, synthetic data generation, distributed training tools (DeepSpeed, Megatron-LM), multimodal AI

Technologies

PyTorch, JAX, DeepSpeed, Megatron-LM

Responsibilities

Support post-training strategies (instruction tuning, SFT/DPO/PPO), build evaluation pipelines, implement reward modeling methodologies, collaborate on bridging research to production, analyze large-scale datasets

Seniority

Intern

Sourced via tiktok · Listed on CareerPlan, which tracks 901,000+ jobs from 20+ sources.