Principal Mechanical Engineer / Systems Engineer

About the role

Halo is a technology company building the future of haircare for all textures. We create category-defining products built for the complexities others overlook. We're building HaloBraid, the world's first braid-assist device. It helps stylists finish braids five times faster, flawlessly and gently. This is one of the hardest unsolved problems in robotics, applied to a $270B salon services industry, and integrating computer vision, compliant fiber manipulation, and novel mechanisms. Billions of hours are spent braiding hair each year; HaloBraid gives that time back. We're moving from R&D into deployment with salons, and we're backed by leading investors.

Responsibilities

• Understand the full HaloBraid machine and its architecture: identify design, tolerance, assembly, serviceability, and dependency issues, and drive them to resolution.
• Personally deliver IC engineering: own a subassembly from 3D CAD through pilot and toward production-ready parts.
• Review design work across the team to reduce complexity and raise design standards.
• Build strong test/experiment/decision frameworks.
• Apply DFM/DFA judgment and prepare for pilot builds, supplier engagement, and contract-manufacturer handoff.
• Mentor engineers, set practical best practices and standards, and strengthen our engineering culture without becoming process-heavy.
• Collaborate with electrical, industrial design, manufacturing, and suppliers.

Requirements

• 10+ years, or equivalent depth, in electromechanical product development.
• Strong mechanical architecture and product-design judgment: you can see the whole system and its tradeoffs.
• A track record of delivering designs that made it through pilot or production.
• An ability to review CAD and identify design, assembly, and serviceability issues.
• A strong experiment / test / decision-making framework.
• Fluency with control drawings, tolerances, assemblies, and manufacturability.
• Taken a product or a major subsystem from prototype toward production.
• A desire to mentor other engineers without adding bureaucracy.

Skills

Desired skills (optional):

• BOM ownership.
• Supplier searches with technical and cost recommendations: CM / supplier interface experience.
• Product roadmap input.
• Production-transfer experience.
• People-management experience.
• Robotics or mechatronics experience.
• Production embedded / electrical interface awareness.

Who You Are

• User-centric. You want to build things people actually use and love.
• Low ego, adaptable, collaborative. A fast, honest iterator.
• You learn through testing and user feedback, and you follow through on what you suggest.
• Driven by the mission. A hard, unsolved robotics problem that gives millions of people their time back is your idea of a good challenge.
• A clear communicator.

Benefits

• 100% medical premium coverage, comprehensive dental and vision benefits.
• Meaningful equity.
• 12 company holidays and unlimited PTO.
• Free parking onsite.

Schedule

This is an onsite position at our office/lab in Cambridge, MA.

You must have authorization to work in the US.