CareerPlan

LLM Post-Train Eng. Early Career Program

Yokohama,Yokohama,JapanFull-time2026-11-09 → 2026-11-10
Based in Japan

Core

Adapt foundation models for telecom use cases through fine-tuning, alignment, and data work to make AI agents more reliable for Customer Support and Network Deployment.

Role type

Early-career LLM Post-Training Engineer

Builds

AI agents for autonomous network operations and customer support

Domain

Telecommunications / AI / Large Language Models

Deliverable

production ML models

Required skills

Python, supervised fine-tuning (SFT), parameter-efficient fine-tuning (LoRA, QLoRA), policy-reward training (GRPO, SAPO), dataset curation, synthetic data generation, experiment tracking, GPU resource management

Preferred skills

Academic/research experience in LLMs, preference optimization (DPO, PPO), reinforcement learning, telecommunications domain knowledge

Technologies

LoRA, QLoRA, GRPO, SAPO, DPO, PPO, Python, GPU

Responsibilities

Develop and run SFT pipelines to adapt base LLMs with domain knowledge; Experiment with parameter-efficient fine-tuning techniques and evaluate trade-offs; Support experiments with policy-reward training approaches; Build and maintain data-curation pipelines for SFT and reward training; Manage training runs, schedule workloads, and monitor GPU resources; Track and summarize key training metrics for the engineering team.