Job Description

About Us

At our company, our mission is to create a world where all people and companies can challenge themselves beyond existing boundaries. We’re one of the fastest-growing start-ups in Japan, growing at a speed that is twice as fast as Unicorn startups. By using our product, sales teams can improve their work efficiency significantly. We have achieved over 900% YoY business growth rate in 2.5 years since our flagship product was released, and we’re currently actively working on a wide range of new product portfolios.

The Team

Our co-founders are from top companies worldwide, and our Engineering & Product team includes members from more than 16 countries, coming from leading tech companies globally.

Responsibilities

As a strategic role reporting directly to the CTO, you will be at the forefront of driving our AI Agent development. This position goes beyond a typical engineering role, involving significant engagement in strategic decision-making and the direction of our products. You will take a leadership role in building the next generation of AI Agents, driving innovation through collaboration with internal and external stakeholders. You will also lead large teams, leveraging the latest AI technologies to develop and operate next-generation enterprise solutions.

• Provide technical leadership for AI Agent development projects.
• Design and select system architectures.
• Provide technical support and conduct code reviews for team members (senior and junior).
• Coordinate technically with external stakeholders (Product, UX, Research, etc.).
• Evaluate cutting-edge LLM and agent technologies and formulate adoption strategies.

Requirements

• Meaningful experience in building (and rebuilding) production systems to deliver new product capabilities and to handle increasing scale.
• Care deeply about the end-user experience and take pride in building products to delight customers.
• Experience leading development teams or managing projects with multiple members.
• Large Language Model Integration: Experience working with LLM APIs (e.g., OpenAI, Anthropic) and integrating them into agent workflows for natural-language understanding and generation.
• Agent Solution Design: Ability to design and build deployable AI agent solutions and best-practice templates for various stakeholders.
• Cloud Platform Expertise: Hands-on experience with AWS, GCP, or Azure to deploy, scale, and secure AI services in production.
• Database Design & Optimization: Expertise in designing scalable database schemas, indexing strategies, and query optimization for high-performance applications.
• Understanding and practical experience with Model Context Protocol (MCP).
• Business-level English proficiency.

Nice to Have

• Agent Orchestration Frameworks: Familiarity with platforms like LangChain, Rasa, or Restack to build, evaluate, and iterate on AI agent workflows.
• Benchmarking & Evaluation: Experience with tools and methodologies to measure agent accuracy, reliability, and on-brand performance.
• Experience promoting projects in startups or R&D departments.
• Experience with technical presentations and public speaking, both internally and externally.

Our Tech Stack

Front-end

• TypeScript, React
• Libraries: Storybook, jest
• Hosting: Amplify

Server Side/Back-End

• Infrastructure: AWS, ElasticBeanstalk
• Database: Aurora, ElasticSearch
• Languages: Go, TypeScript
• Analysis Environment: Athena
• Framework: Express
• Monitoring: DataDog
• Others: AWS Lambda, AWS Batch, AWS API Gateway, AWS Glue

Why Us?

• One of the fastest-growing SaaS startups in Japan with strong financial growth.
• Innovative new product development and the opportunity to build things from scratch.
• Plenty of leadership and career development opportunities.
• Fully remote-friendly & flexible work schedules.
• Global team and English-speaking environment.
• Great benefits & perks packages.

Working Style

• Remote Work: We’re remote-friendly, using Zoom and other platforms to maintain communication while working remotely.
• Flexible Work: Customize your daily working hours with reasonable limits.
• Work-Life Balance: We value a healthy work-life balance, accommodating both heavy work focus and personal time.