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Job ID : 1586827 Date Updated : April 16th, 2026

Machine Learning Engineer for English speaker

Hiring Company AI monitoring app to protect children from dangerous chats
Location Available across Japan
Job Type Permanent Full-time
Salary 7 million yen ~ 11 million yen

Work Style

Remote Work and WFH Casual Clothing Side Business Ok Flex Time

Job Description

AI risk detection is at the heart of everything we do — it's what differentiates Kodomamo from every other parental control app on the market. We are looking for a Machine Learning Engineer to go deeper: sharpen our existing models, expand them to new threat types, and help us extend this technology to protect seniors from fraud.
You will own the full ML lifecycle end-to-end — research, experimentation, training, deployment, and monitoring — working directly with the CTO.

What You'll Do

  • Research, prototype, and deploy ML models for detecting risky chat content, inappropriate images, and fraud-linked communication patterns.
  • Work with backend and product teams to integrate ML inference into production APIs.
  • Build and maintain ML pipelines and data workflows on GCP.
  • Monitor model performance and iterate based on real-world feedback.
  • Stay current with relevant ML research and adapt promising techniques to our safety use cases.

Tech Stack

  • ML: Python, TensorFlow / PyTorch
  • Cloud: GCP (Vertex AI, BigQuery, Cloud Storage)

 

General Requirements

Minimum Experience Level Over 3 years
Career Level Mid Career
Minimum English Level Business Level (Amount Used: English Only)
Minimum Japanese Level None
Minimum Education Level High-School
Visa Status Permission to work in Japan required

Required Skills

Must-have:

  • 3+ years of professional ML engineering experience, with at least one model in production.
  • Proficient in Python and experienced with ML frameworks (TensorFlow, PyTorch, or equivalent).
  • Hands-on experience building ML pipelines on GCP or equivalent cloud platforms.
  • Ability to communicate technical findings clearly in English (our working language).
  • Comfortable in a fast-moving, resource-constrained startup environment.

Preferred:

  • Experience with NLP, content moderation, or fraud detection use cases.
  • Familiarity with Kubernetes-based model serving.
  • Experience with privacy-preserving ML or on-device inference.

 

Job Location

  • Available across Japan

Work Conditions

Job Type Permanent Full-time
Salary 7 million yen ~ 11 million yen
Industry Internet, Web Services

Job Category

Company Details

Company Type Small/Medium Company (300 employees or less)
Non-Japanese Ratio About half Japanese