Machine Learning Scientist (LLM & Agents)

Appier (TSE: 4180) is an AI-native Agentic AI as a Service (AaaS) company that empowers businesses to create value through cutting-edge AdTech and MarTech solutions. Founded in 2012 with the vision of “Making AI Easy by Making Software Intelligent,” Appier helps businesses turn AI into ROI through its Ad Cloud, Personalization Cloud, and Data Cloud—each powered by Agentic AI that enables autonomous, adaptive, and real-time decision-making. Today, Appier operates 17 offices across APAC, the US, and EMEA, and is listed on the Tokyo Stock Exchange. Learn more at www.appier.com.

We are looking for a Machine Learning Scientist (LLM & Agents) to join the Enterprise Solution Science Team.
This team focuses on applying cutting-edge ML technologies to real-world marketing problems by combining them with omnichannel customer data.
In this role, you will be responsible for end-to-end development, from problem definition to driving model deployment into production.

• You will contribute to the design, development, and productionization of one or more enterprise AI agents, including:
  • Marketing Agent: Empower marketers to improve conversion rates and drive revenue growth.
  • Strategy Agent: Transform raw data into actionable, revenue-driving strategies, and high-potential audience segments.
  • Sales and Service Agent: Drive sales conversion, increase average order value (AOV), deepen brand engagement and customer loyalty through real-time, 24/7 AI-powered support.
• Collaborate with product teams to translate product requirements into well-defined machine learning problems
• Work with ML engineers to deploy models into production environments 
• Conduct offline and online evaluation, monitoring, and continuous optimization after deployment
• Stay up to date with the latest research and proactively propose innovative applications

• Master’s or PhD degree in Computer Science, Machine Learning, Mathematics, Electrical Engineering, or related fields
• Experience in machine learning, LLM, or software engineering through research, internships, projects, or industry work
• Experience or strong interest in LLM / agentic application development, including:
  • Skills / tools / function calling 
  • AI Protocol (MCP / A2A)
  • Workflow orchestration
  • Benchmark evaluation
• Strong analytical and problem-solving skills, with passion for learning cutting-edge technologies
• Impact-driven mindset with analytical and problem-solving skills, and passion for learning cutting-edge technologies
• Familiarity with AI-powered development tools such as: Claude Code, OpenAI Codex / Codex CLI, Cursor, Windsurf, GitHub Copilot

• Strong focus on quantitative metrics and systematic evaluation
• Industry experience in MarTech and passion for building customer-centric products
• Familiarity with agentic product development concepts such as:
  • Context engineering
  • Harness engineering
  • Evaluation / testing workflows
  • Human-in-the-loop workflows

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