This position is closed and is no longer accepting applications.

Prompt Engineer

Zeals Meguro-ku, Tokyo March 19 2025
  • 💴 No salary range given
  • 🏡
    Fully remote
    From Japan
  • 🌏
    Apply from abroad
    Relocate to Japan
  • 💬
    No Japanese required
    Business English
  • 🧪
    Intermediate level
    2+ years experience required

About Zeals

Zeals Meguro-ku, Tokyo

We are a group of scrappy and hungry bunch from different walks of life, looking to make an actual impact on the way people and businesses communicate through our AI Chatbot technology.

Key benefits

  • Everyone has a voice
  • Phenomenal growth
  • Full flexibility

About the position

Your typical day with us will involve leading the development of user-facing conversational AI features, designing and testing reusable prompts as part of a broader system, and ensuring our AI applications are optimized for efficient, natural, and personalized conversational experiences in English and Japanese. You will collaborate closely with cross-functional teams to deliver scalable and flexible experiences, all while mentoring members of non-technical staff on prompt engineering best practices and contributing to the overall technical direction of the prompt engineering team.

Responsibilities

  • Design, develop, and implement a series of dynamic prompts for our conversational AI applications, ensuring high performance, scalability, and user engagement.
  • Contribute to and expand the design of a system of reusable, flexible prompts that prioritize scale and personalization across myriad tenants, industries, and modalities.
  • Conduct recurring tests of prompt performance prior to implementation to properly set business expectations for quality, security, and cost by model, model provider, tenant, and industry.
  • Participate in on-call monitoring of AI feature performance and remedy any issues that arise due to technical difficulties.
  • Educate non-technical members of the organization on prompt engineering foundational concepts, best practices, and tool usage.
  • Ensure the technical feasibility of feature requests from non-technical staff, collaborating closely with the business and product teams to deliver compelling and natural conversational user experiences.
  • Gather feedback on product performance, user experience, language experience, and quality from technical and non-technical staff alike, and cleanly organize data into quickly digestible reports for executive management.
  • Optimize prompt performance to ensure fast output times, API calls, and overall application responsiveness.
  • Collaborate with backend engineers to define API requirements, ensuring seamless integration between prompts, third party model providers, and backend systems.
  • Integrate closely with product leadership to shape the vision and roadmap for AI product functionality according to business needs and cutting-edge developments in generative AI.
  • Stay updated with the latest trends and technologies in prompt engineering, prompt defense, and generative AI development, continuously improving the team’s skill set and technical direction.
  • Participate in cross-functional meetings to align prompt engineering with product goals, business targets, and company objectives.

Requirements

  • 2+ years of professional, corporate experience in conversation design, prompt engineering, or a similar role, with a strong focus on building large-scale, high-performance, conversational applications.
  • Bachelor’s degree in Linguistics, Cognitive Science, Computer Science, Human Computer Interaction, Rhetoric, Communication, Performing Arts, Anthropology, or related field.
  • Deep understanding of prominent, contemporary large language models (LLMs) and their providers, with a clear perspective on the advantages and disadvantages of the contracts, capabilities, and cost of each.
  • Mastery in understanding the mechanics of language, with an awareness of analyzing one’s own bias around language style, dialect, and ideology.
  • Ability to communicate effectively with cross-functional teams, providing clear technical guidance and recommendations through negotiation, presentation, and conference.
  • Noted experience in crafting compelling presentation slides, clear business plans, and research documentation.
  • Previous experience leading or mentoring a team, with a passion for knowledge sharing and team development.

Nice to haves

While not specifically required, tell us if you have any of the following.

  • Hands-on experience with Python and related tools (VS Code, Postman).
  • Advanced degree in Linguistics, Cognitive Science, Computer Science, Human Computer Interaction, Rhetoric, Communication, Performing Arts, Anthropology, or related field (Master’s degree, PhD).
  • Demonstrated experience in conveying complex technical and sociolinguistic concepts to non-technical members of staff as related to business goals and objectives.
  • Extensive experience in systems design, especially for enterprise applications.
  • Native or business proficiency in Japanese language.
  • Basic knowledge of AI ethics pertaining to user protections in the United States or Japan.
  • Knowledge of backend technologies and how they integrate with prompt systems.

Meet Zeals's Developers

Or Perlman shares how Zeals’s focus on end users transformed his career and led to business success.

Read their story...

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