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42dot

Unified platform for multi-modal urban mobility

AI Engineer - Navigation Agent

Applied Machine Learning +1Confirmed live in the last 24 hours
Full-timePangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, South KoreaNo salary listedHybrid

About the Job

Requirements

  • Experience in research or development related to machine learning or deep learning.
  • Direct experience performing large language model fine-tuning or post-training.
  • Experience designing, training, evaluating, and optimizing models using PyTorch or another deep learning framework.
  • Experience developing and improving machine learning models for classification, prediction, ranking, or recommendation.
  • Ability to design and build training data and resolve model issues through quantitative and qualitative evaluation.
  • Ability to learn new technologies and problems quickly and collaborate with colleagues across different functions.
  • Experience developing navigation or map and mobility services is preferred.
  • Understanding of navigation domains such as route search, points of interest search, place recommendations, estimated time of arrival prediction, or traffic information is preferred.
  • Experience developing large language model-based agents, tool use, or function-calling models is preferred.
  • Experience applying and operating search, recommendation, ranking, or personalization models in real services is preferred.
  • Experience developing models using large-scale user logs or location and movement data is preferred.
  • Experience with distributed GPU training and building and operating large-scale training pipelines is preferred.

Responsibilities

  • Perform large language model fine-tuning and post-training for the Navigation Agent, designing and applying suitable methods such as instruction tuning, supervised fine-tuning, and preference optimization.
  • Develop agent models that understand user utterances and travel context and perform appropriate navigation functions, including extracting user intent and information, selecting tools and APIs, generating execution plans, and producing responses and actions based on conversational context.
  • Develop agent component models using traditional machine learning techniques such as classification, prediction, and ranking.
  • Build training and evaluation datasets and improve data quality.
  • Design agent performance evaluation processes and key metrics, analyze failure cases, and improve model quality.
  • Optimize model accuracy, stability, and response speed in real service environments.
  • Collaborate with Navigation, Backend, Data, and Product organizations to apply models to products and continuously improve them.

About the Company

42dot

Unified platform for multi-modal urban mobility

42dot.ai provides a platform called UMOS (Urban Mobility Operating System) that connects and manages multiple transportation modes—such as cars and drones—within a single system for cities, agencies, and private clients. UMOS enables efficient transportation management, demand-response services, and smart logistics by integrating data and operations across modes, powering operations through a subscription-based platform-as-a-service model. Unlike single-mode solutions, 42dot.ai offers multi-modal, city-focused orchestration that bridges public, private, and logistics needs. The company aims to transform urban mobility by helping cities run more efficiently, cut costs, and improve the experience for commuters and logistics providers.

Company size
501-1,000
Company stage
Growth Equity (Venture Capital)
Total funding
$731.9M
Headquarters
Seoul, South Korea
Founded
2019

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