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42dot

Unified platform for multi-modal urban mobility

Senior ML Engineer - AI Data

Applied Machine LearningUpdated on Nov 11
Full-timePangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, South KoreaNo salary listedHybrid

About the Job

Requirements

  • A bachelor's degree or higher in Computer Science, Electrical/Electronic Engineering, Robotics, or a related field, or equivalent practical experience, and at least 7 years of experience in AI/ML systems, data engineering, software architecture, or distributed processing.
  • Experience developing AI/ML and data workflows and systems using programming languages such as Python or C++, and designing and developing reusable SDKs, APIs, or libraries.
  • Understanding of model training and evaluation workflows based on machine-learning frameworks such as PyTorch or TensorFlow, with experience developing distributed training or large-dataset processing and training-data loading systems.
  • Experience analyzing and optimizing performance bottlenecks such as storage I/O, CPU/GPU utilization, and memory usage, based on understanding of ML/data infrastructure and end-to-end data flows.
  • Experience designing system architectures that connect different data/ML workloads and defining data flows and interfaces between systems in distributed environments.
  • Experience deploying and operating ML/data workloads in cloud environments such as AWS, GCP, or Azure using Docker and Kubernetes, and applying workflow orchestration and monitoring.

Responsibilities

  • Develop an autonomous-driving data ontology, canonical data model, and SDK/API to provide consistent semantics and data access across data platforms and ML workflows.
  • Use semantic retrieval, LLM/VLM, and AI agents to automate data work and build reliable AI workflows for production environments.
  • Analyze bottlenecks across distributed processing, dataset preparation, storage access, and training-data loading, and improve throughput, resource utilization, and cost efficiency.
  • Design system architectures supporting AI/ML workflows from data collection through auto-labeling and model training; define components and interfaces that meet technical requirements and support reuse and scalability.
  • Build and operate systems for data and ML workloads in cloud-native environments, using orchestration, reproducibility, monitoring, and failure recovery to ensure reliability and operational efficiency.

Desired Qualifications

  • Experience developing data-processing technologies using multimodal sensor data and map data in autonomous driving, ADAS, robotics, or other physical AI fields.
  • Experience using techniques in computer vision, 3D geometry, or spatial computing, including coordinate transformations, camera geometry, or point-cloud processing.
  • Experience developing data models and search systems for complex domain data using ontologies, knowledge graphs, or embedding-based retrieval.
  • Experience developing and operating agentic workflows based on LLM/VLM or AI agents, including tool calling, MCP-based data-service integration, agent orchestration, evaluation, and tracing.
  • Experience optimizing data delivery performance in large-scale distributed training environments using data loading, prefetching, caching, or data sharding, and experience with distributed computing frameworks such as Ray or Dask.
  • Experience designing and operating systems for large-scale storage architecture, dataset lifecycle management, data lineage, privacy, or cross-region data governance.

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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