Senior Mechatronics Engineer

THE COMPANY

The Company:

Juul Labs's mission is to transition the world’s billion adult smokers away from combustible cigarettes, eliminate their use, and combat underage usage of our products. We are backed by leading technology investors and are committed to hiring the world’s best talent.

ROLE AND RESPONSIBILITIES

Role and Responsibilities:

• Work cross-functionally with Firmware, Product Design, Chemistry, and Regulatory teams to translate program needs into reliable, well-documented tooling.
• Design and develop test systems and automation tooling. This includes software frameworks, electromechanical fixtures, and instrumentation.
• Contribute to the team’s CI/firmware testing infrastructure by developing modular, maintainable test platform components in close collaboration with the firmware engineering team.
• Own projects end-to-end. Capture requirements and drive system architecture through fabrication, software integration, validation, and handoff to stakeholders.
• Proactively identify gaps, flag risks early, and propose solutions without waiting to be directed.
• Consistently produce clear, thorough documentation that enables peers and stakeholders to self-serve and build on your work.
• Actively leverage AI coding assistants and LLMs as a first-order productivity multiplier for code generation, debugging, documentation, data analysis, and design iteration.

PERSONAL AND PROFESSIONAL QUALIFICATIONS

• Required:
• 7+ years of hands-on experience in mechatronics, hardware/electrical engineering, or a closely related discipline, with demonstrated ability to work effectively across mechanical, electrical, and software domains.
• Strong EE fundamentals: circuit design, analysis, schematic capture, PCB layout and review (Altium preferred, or equivalent), embedded microcontrollers, sensors, and analog/digital instrumentation.
• Familiarity with Rust or other systems-level programming languages; the team is actively moving toward Rust-based tooling.
• Proficiency in Python (or equivalent) for test automation, data acquisition, and analysis scripting.
• Proven experience designing and building automated test fixtures or custom electromechanical systems.
• Strong systems-level thinking: able to decompose complex problems, design across the full stack, and reason clearly about failure modes and edge cases.
• Currently and actively using AI tools (coding assistants, LLMs) as a core part of your daily engineering workflow.
• Clear, concise communicator with strong documentation discipline; comfortable working directly with non-engineering stakeholders.