Research Scientist (Generative & Agentic AI) - Tokyo,Japan.
Tokyo, Japan · On-site
Mid levelVisa sponsorship$164M raised
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Tokyo, Japan · On-site
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Full-time
postgraduate degree
Visa sponsorship
Visa sponsorship available
Posted 4h ago
~40 hrs/week
Responsibilities
You will research and build agentic AI systems, including reasoning, planning, and multi-agent collaboration powered by LLMs and VLMs. Additionally, you will advance post-training techniques and collaborate with cross-functional teams to integrate research into production applications.
Requirements
Candidates must hold a Master's degree or Ph.D. in Computer Science, Electrical Engineering, Mathematics, or a related field with research experience in AI/ML. Proficiency in Python and PyTorch is required, along with deep expertise in foundation models and hands-on experience with LLM fine-tuning or agent frameworks.
Full job description
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.
About the Role
As a Research Scientist, you will work at the frontier of generative and agentic AI: advancing Large Language Models (LLMs), Vision-Language Models (VLMs), and AI agents that reason, plan, and use tools to solve real-world problems. Your research will span post-training (SFT, RLHF/RLVR), reasoning and test-time scaling, multimodal intelligence, and autonomous agentic systems. You will shape Appier's core AI capabilities, publish at top AI/ML conferences, and collaborate with scientists and engineers to turn frontier research into product impact.
Responsibilities
Research and build agentic AI systems: reasoning, planning, tool use, memory, and multi-agent collaboration, powered by LLMs and VLMs.
Advance post-training techniques (SFT, RLHF, RL with verifiable rewards, preference optimization) to improve model capability, alignment, and reliability.
Improve the performance, efficiency, and scalability of foundation models across training, inference, and test-time compute.
Design rigorous evaluations and benchmarks for models and agents in real-world scenarios.
Collaborate with cross-functional teams to ship research into production applications.
Track frontier research, propose new directions, and publish key findings at leading AI/ML venues.
About You
Minimum Qualifications
Master's degree or Ph.D. in Computer Science, Electrical Engineering, Mathematics, or a related field, with research experience in AI/ML.
Deep understanding of modern foundation models, with expertise in at least one of: LLMs, VLMs/multimodal models, RL, or agentic systems.
Hands-on experience building with LLMs: fine-tuning, RAG, agent frameworks (e.g., tool use, function calling), or product prototyping. Fluency with AI-assisted coding workflows is a plus.
Proficient in Python and PyTorch; able to build, train, and optimize models effectively.
Strong ability to analyze model behavior, diagnose bottlenecks, and improve training and inference pipelines.
Clear communication skills and a team-first attitude in a fast-paced, collaborative environment.
Preferred Qualifications
Publications in top AI/ML conferences (e.g., NeurIPS, ICML, ICLR, CVPR, ACL, EMNLP).
Experience with large-scale distributed training or LLM post-training pipelines.
Contributions to open-source projects (e.g., agent frameworks, model or benchmark releases).
Passion for pushing the frontier of generative and agentic AI and bridging research with impactful real-world applications.
Open to overseas candidates/Visa Support This position is based in Tokyo, Japan. For international candidates, Appier's Japan office provides visa sponsorship to ensure a smooth transition to Japan.
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Related keywords
Generative AIAgentic AILarge Language ModelsVision-Language ModelsAI AgentsPost-trainingSFTRLHFRLVRMultimodal IntelligenceReasoningPlanningTool UseMemoryMulti-agent CollaborationPython
Appier is an AI-native Agentic AI as a Service (AaaS) company that empowers businesses to create value with cutting-edge AdTech and MarTech solutions. Guided by the vision of “Making AI Easy by Making Software Intelligent,” our mission is to help businesses turn Agentic AI into ROI.
Founded in 2012, Appier is listed on the Tokyo Stock Exchange’s Prime Market (Ticker: 4180) and operates in 17 cities worldwide, enabling over 2,000 leading companies to enhance marketing performance with the latest AI technology. As AI enablers for our customers in the AI Era, Appier delivers innovative solutions that drive measurable results.
Offices: 6F, No. 123, Songren Road, Taipei, Taiwan 110, TW · 12 Marina View, Asia Square Tower 2 #23-01, Singapore, SG · 180 Sansome Street, San Francisco, CA 94104, US · 2-5-1, Atago, Minato-ku, Mori Tower, Atago Green Hills, Tokyo, Tokyo 105-6240, JP · 14F, T412 Building, 412, Teheran-ro, Gangnam-gu, Seoul, 06193, KR
Artificial Intelligence & Data MiningBusiness & Marketing IntelligenceMarketing & AdvertisingGenerative AI (GenAI)Marketing AIMarketing AI AgentPredictive AIAI AdTechand AI MarTechInformation Technology
How many Software jobs are open in Tokyo, Japan right now?
There are currently 981 open software positions in Tokyo, Japan listed on Clera. New openings are added daily as companies post roles.
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