CareerPlan

AI Engineer: Post-Training

LondonFull-time2026-11-05 → 2026-11-10

Core

Own the product capability for improving LLMs via post-training methods (SFT, RLHF, distillation, synthetic data) for industrial engineering workflows.

Role type

Senior hands-on product ML engineer (post-training)

Builds

Production-ready model improvement pipelines and managed workflows for customer data

Domain

Industrial engineering, aerospace & defence, automotive, semiconductors

Deliverable

production ML models

Required skills

Python, PyTorch, distributed training, post-training methods (RLHF, distillation, SFT), synthetic data pipelines, reward modeling, model evaluation, data governance

Preferred skills

Tool use/agent workflows, large-scale rollout generation, regulated/air-gapped environments

Technologies

PyTorch, Python

Responsibilities

Build reliable post-training harnesses covering data preparation to serving; Improve open models against PhysicsX benchmarks; Develop synthetic-data and expert-data pipelines; Design reward signals and detect reward hacking; Ensure customer data remains within customer platform environments; Set product roadmap for model improvement