Senior Backend Engineer (AI-Native) – Aximo

Autify Chuo-ku, Tokyo April 15 2026
  • 💴 ¥8M ~ ¥12M annually
  • 🏡
    Fully remote
    From Japan
  • 🌏
    Apply from abroad
    Relocate to Japan
  • 💬
    No Japanese required
    Business English
  • 🧪
    Senior level
    5+ years experience required
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About Autify

Autify Chuo-ku, Tokyo

A test automation platform founded in San Francisco by a team of engineers who were the first Japanese team to graduate from the top US accelerator Alchemist Accelerator. Over 300 companies have implemented our platform.

Key benefits

  • Engineering-centric culture
  • Remote-first
  • Internationally minded engineers

About the position

As a Senior Software Engineer focused on on-premise version of this product, you will drive the design and development of secure, scalable server-side services, AI worker processes, and a robust Remote Control Agent for desktop app testing. Your work will empower enterprise customers to deploy and operate Aximo entirely within their infrastructure while enabling high-fidelity automated testing across both web and desktop environments. You will work closely with product leads, AI/ML engineers, and site reliability teams to define architecture, solve deep system challenges, and deliver an exceptional on-premise testing solution.

Responsibilities

  • Architect and implement the on-premise Aximo platform, including:Backend services (API, orchestrators), Worker processes for executing AI agents, Secure runtime environments for customer infrastructure
  • Design and build a Remote Control Agent capable of: Interacting reliably with native Windows applications, Simulating user input (keyboard, mouse, window focus/control), Capturing screen and UI state for automated testing
  • Integrate AI agent execution into on-premise workflows with observability, isolation, and security in mind
  • Ensure deployment, upgrade, and configuration mechanisms operate seamlessly in self-hosted environments (e.g., air-gapped, restricted-network)
  • Collaborate with cross-functional teams to iterate on product features, performance, and reliability
  • Help define best practices for enterprise adoption and long-term maintainability

Requirements

  • 5+ years of software engineering experience with server-side distributed systems
  • Strong expertise in backend development (Go, Rust, Node, Python, or similar)
  • Experience building self-hosted or on-premise software products
  • Familiarity with containerization (Docker) or packaging/distribution tooling
  • Deep experience with OS-level automation/system programming, especially on Windows (UI Automation, Win32 APIs, accessibility APIs, desktop interaction)
  • Solid understanding of security, sandboxing, and process isolation in distributed systems
  • Heavily using coding agents and sophisticated on AI driven software development
  • Proven ability to drive technical decisions and deliver high-quality software
  • Strong communication skills and ability to work in a cross-disciplinary team with engineers, product managers, and AI researchers

Nice to haves

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

  • Experience with test automation frameworks or products
  • Experience building AI agents or software that integrates with LLMs
  • Experience with AI/ML integration or agent-based systems
  • Knowledge of enterprise deployment tooling (Ansible, Helm, Windows Installer, etc.)
  • Experience with monitoring / observability stacks for large systems

Compensation

¥8,000,000 ~ ¥12,000,000 annually.

DO YOU NEED MORE INFO?
ASK A QUESTION

Meet Autify's Developers

Samuel Johnson shares his experiences of working at Autify, where he does a mix of SRE and backend engineering. He explains how their product and working environment make it an attractive opportunity.

Read their story...

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