AI Engineer (Navigation Agent) at 42dot Vietnam

Department: ENGINEERING

Language

Setup: Hybrid
Location: South Korea
Type: Full-time
Level: not_specified
Posted: Jul 24, 2026

Description

The AI Engineer will develop and improve AI agents for navigation by fine-tuning and post-training LLMs, building traditional machine-learning models, creating and evaluating datasets, designing performance metrics, optimizing model accuracy and response speed, and deploying models across navigation, backend, data, and product teams. The role requires research and development experience in machine learning or deep learning, hands-on LLM fine-tuning or post-training, PyTorch experience, and model evaluation and optimization skills.

Required Skills

LLM fine-tuning
Post-training
PyTorch
Classification
Prediction
Ranking
Tool use
Function calling

Additional Information

Required Previous Experiences: Research and development experience in machine learning or deep learning
Hands-on experience performing LLM fine-tuning or post-training
Experience designing, training, evaluating, and optimizing models with PyTorch
Experience developing and improving machine-learning models for classification, prediction, ranking, or recommendation
Experience designing training data and resolving model issues through quantitative and qualitative evaluation
Preferred Qualifications: Experience developing navigation or map/mobility services
Understanding of navigation-domain concepts such as route search, POI search, place recommendations, ETA prediction, and traffic information
Experience developing LLM-based agents, tool-use, or function-calling models
Experience deploying search, recommendation, ranking, or personalization models in real-world services
Experience developing models using large-scale user logs or location and mobility data
Experience building and operating GPU distributed training and large-scale training pipelines
Translation Company Name: 42dot