CareerPlan

Senior AI Researcher: LLM post-training for hallucination reduction (f/m/d)

HeidelbergFull-time2026-10-14 → 2026-11-12
Hybrid

Core

Design, execute, and scale post-training methodologies (SFT, RL) to eliminate LLM hallucinations and implement uncertainty estimation and self-correction mechanisms.

Role type

Senior AI Researcher (LLM post-training)

Builds

Grounded, reliable LLMs for industrial applications

Domain

Generative AI, Large Language Models, Post-training

Deliverable

production ML models

Required skills

LLM post-training (SFT, RL), distributed training frameworks, Python, PyTorch, uncertainty estimation, calibration, self-consistency, RAG evaluation

Preferred skills

Hallucination mitigation, out-of-distribution detection, claim verification

Technologies

PyTorch, GPU clusters

Responsibilities

Design post-training pipelines, implement uncertainty estimation techniques, benchmark hallucination rates, drive research projects from hypothesis to production

Seniority

Senior, hands-on IC