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Software Engineer, CUA Control

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Where multiple locations are listed for this role, the position may be based in any of those locations, with priority determined according to the order of listing.

We're looking for an engineer to work on the control layer - the system that translates an AI model's intent into precise, reliable actions on a real computer. This means mouse movements, keyboard input, window management, UI element detection, and error recovery across macOS, Windows, and Linux.

What you'll do

  • Work on the low-level computer control stack: mouse/keyboard injection, screen capture, coordinate mapping, input simulation

  • Implement UI element detection using accessibility APIs (AXUIElement, UI Automation), DOM/a11y trees, and visual grounding

  • Help build the abstraction layer that lets our agent operate across OS platforms and application types

  • Tackle reliability problems: element targeting under UI changes, window occlusion, resolution scaling, cross-app focus management

  • Contribute to feedback loops: how does the agent know its action worked? How does it recover when something unexpected happens?

  • Work closely with the model and planning team on the interface between intent and execution

You might be a fit if

  • You've built OS-level input automation (CGEvent, SendInput, xdotool, or similar)

  • You understand accessibility frameworks - AXUIElement on macOS, UI Automation on Windows, AT-SPI on Linux

  • You've dealt with flaky element selectors, timing issues, resolution-dependent coordinates

  • You think carefully about reliability and edge cases

  • You've worked with tools like Playwright, Appium, PyAutoGUI, Hammerspoon, or similar

Bonus

Experience with screen reader internals, remote desktop protocols (RDP/VNC), game automation, LLM agent tool-use systems, or mobile device automation (iOS UIAutomation / XCTest, Android UIAutomator / Accessibility).

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What this application asks

ashby

Full Name, Email, Location, Resume

  • Are you authorized to work in the country this role is listed in? choose any
  • Will you require sponsorship to continue or extend your current work authorization status, either now or in the future? choose one
  • A “U.S. person” is a citizen, legal permanent resident, or legal temporary resident (i.e., a refugee or asylee) of the United States. Which of the following best describes your “U.S. person” status? choose one
  • Earliest Availaibility
  • How did you hear about this job? choose one
  • If you answered Other or Simular Employee above, please enter your source below. optional
  • Additional Attachments upload · optional
  • LinkedIn Profile (if available) optional
  • Github Profile (if available) optional
  • What is your desired salary range?
  • What makes you particularly well suited for this role? written answer
  • Have you worked at Simular in the past in a Full-time, Part-time, contractor or Intern capacity? yes / no
  • Do you have any contractual or legal restrictions (e.g., non-compete, non-solicitation, confidentiality agreements, etc.) that may affect your ability to work with us? yes / no
  • Are you willing to undergo a background check as part of our recruitment process, if required? yes / no
  • Have you ever been convicted of a crime (other than minor traffic offenses)? yes / no
  • Is there anything else you would like us to know about you? written answer · optional
  • I confirm that all information provided is true and complete to the best of my knowledge. I understand that any misrepresentation or omission may lead to disqualification from the recruitment process or termination of employment. I also consent to the collection and processing of my personal data for recruitment purposes, in accordance with applicable laws and the above privacy notice. choose any

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