Appier

(Senior) Machine Learning Scientist (Modeling & Evaluation)

Appier
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21 hours ago
Taipei, TaiwanSenior

Responsibilities

  • Design, develop, and deploy optimization solutions based on machine-learning models and evaluation methods.
  • Partner with product managers and engineers to define problems, prioritize work, and integrate validated methods into products.
  • Build reliable evaluation methods for LLM outputs and assess whether results apply to real-world conditions.
  • Form hypotheses, design A/B tests using real traffic, interpret results, and own conclusions.
  • Evaluate current research and industry solutions, recommend build-versus-adopt decisions, and propose new approaches.
  • Monitor launched solutions and communicate risks, trade-offs, and progress.
  • Optionally mentor junior scientists and interns.

Requirements

  • Master’s or PhD degree in Computer Science, Machine Learning, Mathematics, Electrical Engineering, or a related field.
  • At least 2 years of experience in machine learning or engineering roles.
  • Hands-on experience with classification, regression, ranking, retrieval, quality evaluation, and LLM-as-a-judge approaches.
  • Solid statistics foundation and ability to connect technical methods to business impact.
  • Ability to prioritize work, collaborate across functions, drive initiatives, and surface risks.
  • Experience working daily with coding agents, reviewing their output, and correcting generated code.
  • Preferred: project leadership, experimentation and A/B testing, embeddings, causal inference, and AI/LLM application engineering including serving and integration.

Categories

Appier

About Appier

501-1,000 employees

Appier builds AI-driven advertising and marketing software for enterprises, offering programmatic ad bidding, customer data, and predictive tools delivered as SaaS. Founded in 2012 and headquartered in Taipei, it is a public company listed on the Tokyo Stock Exchange (ticker: 4180). Its Ad Cloud processes millions of bid requests per second across APAC, Europe, and the U.S., and is used by in-house and agency marketers.

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