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This posting is managed by: Talent Fit Japan株式会社
Company Name Company is not publicly visible
Job Type IT (PC, Web, Unix) - Fullstack Engineer
IT (PC, Web, Unix) - Back-End Engineer
IT (PC, Web, Unix) - Web Application SE
Industry Software Vendor
Location Asia Japan

Job Description We are looking for a highly skilled AI Engineer to join our core development team at Agentic AI Product. You will work directly on our flagship product — Agentic AI Agent, a next-generation autonomous UI agent that automates real user actions across applications. This role includes responsibilities in building, optimizing, and deploying agents autonomously as needed.
Depending on performance, this role has the potential to evolve into an AI Architect position, with leadership responsibilities and compensation expanded.

Responsibilities
・Improve the accuracy, adaptability, and reliability of the AI agent product.
・Build and deploy agents that mimic human interaction across browsers and desktop apps
・Design task execution workflows with high resilience and fault tolerance
・Collaborate on core infrastructure for real-time, multi-agent orchestration
・Implement learning systems that allow agents to self-improve from user feedback
・Work closely with the product and design teams to ensure seamless UX
Company Info Career Path
This position is designed for high-impact technical contributors who wish to grow into AI leadership. Engineers demonstrating strong ownership, creativity, and execution ability may be promoted to AI Architect after 3 months, taking on leadership of a team of AI and ML engineers globally.

About Company
This company is building the automation substrate of the digital world — a universal agent layer that lets humans think and machines do. Our AI agents automate digital work across any UI, without relying on APIs, and our long-term ambition is to embed our automation runtime into every device and application.
Join us as we build what comes after APIs — the platform layer where autonomous software lives.
Job
Requirements
Required Experience & Skills
・Hands-on experience in developing and deploying AI agents
・Proficiency in Python, with strong skills in scripting and automation
・Deep understanding and hands-on work with:
・Playwright (or similar tools like Puppeteer, Selenium)
・MCP (Multi-Context Protocol) or similar execution models
・Long-term memory systems (vector DBs, RAG, embedding strategies)
・Agent-to-agent communication protocols
・Multi-agent systems / orchestration frameworks
・Reinforcement learning or task planning agents
・Familiarity with one or more of the following is a big plus: DOM parsing, visual recognition, screen-based automation
・Low-latency backend communication (WebSocket, gRPC, etc.)
・Browser internals, shadow DOM, virtual desktops

Nice-to-haves
・Experience with desktop automation (AutoHotkey, AutoIt, pywinauto, etc.)
・Contributions to open-source community or having a unique AI agent implementation
・Interest in the future of UI-less, agent-native software platforms
English Level Business Conversation Level (TOEIC 735-860)
Japanese Level Minimum Communication Level
Salary JPY - Japanese Yen JPY 6000K - JPY 10000K   
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