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Appier

Senior Machine Learning Scientist (ROAS) - Tokyo

Tokyo, Japan

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hirly's read of this role

Seniority
Senior
Country
JP
Work mode
On-site / unstated
First seen by hirly
3 Sept 2026

Derived automatically from the posting. Upload your resume above to see how the role scores against it.

the posting

About Appier

Appier is an AI-native Agentic AI as a Service (AaaS) company that uses artificial intelligence (AI) to power business decision-making. Founded in 2012 with a vision of democratizing AI, Appier’s mission is turning AI into ROI by making software intelligent. Appier now has 17 offices across APAC, Europe and U.S., and is listed on the Tokyo Stock Exchange (Ticker number: 4180). Visit www.appier.com for more information.

The Impact You’ll Make at Appier

  • Appier is seeking a Senior Machine Learning Scientist to join our Advertising Cloud Optimization team , which leads the development of core machine learning algorithms driving campaign efficiency and advertiser ROI. Our programmatic advertising platform operates at a massive scale, handling over multi millions queries per second (QPS), all powered by our proprietary deep learning models for bidding, pricing, and personalized content delivery.
  • In this role, you’ll build identify graph to enrich unified customer profile and also identify high purchase value users to drive ROAS by machine learning model.

What You’ll Work On

Leverage scientific methods to build identify graph and identify high-value users

Drive online experiments to continuously improve ROAS

Own the project independently.

Partner with product stakeholder, backend and frontend to provide measurement solution for our customers.

What We’re Looking For

Master’s or PhD’s degree in Computer Science, Machine Learning, Statistics, or related field.

3+ years of industry experience on identify graph, ID mapping and cross-device mapping in digital Ads related fields, and generate mapping and profile under large-scale data.

Proficiency in Python and SQL experience with modern ML frameworks (PyTorch, TensorFlow, etc.).

Strong ownership and collaboration skills.

#LI-AK1

Original posting on Appier's site ↗

Listed on hirly, a job board. hirly is not the employer: Appier is hiring for this role.

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