Principal Mechanical Engineer / Systems Engineer

Halo•Cambridge, MA

8d•Onsite

About The Position

Halo is a technology company developing haircare products for all hair textures. Its HaloBraid product is a braid-assist device intended to help stylists finish braids five times faster. The device applies robotics to hair manipulation and combines computer vision, compliant fiber manipulation, and novel mechanisms. Halo is moving from research and development into salon deployment and is backed by leading investors. The Principal Mechanical Engineer / Systems Engineer will understand the full HaloBraid machine and its architecture, identify and resolve design, tolerance, assembly, serviceability, and dependency issues, and personally deliver individual engineering work from 3D CAD through pilot and toward production-ready parts. The role reviews design work across the team, develops test and decision frameworks, applies DFM/DFA judgment, and prepares for pilot builds, supplier engagement, and contract-manufacturer handoff. The engineer will mentor colleagues and establish practical engineering standards while collaborating with electrical, industrial design, manufacturing, and supplier partners. This is an onsite position at Halo's office and lab in Cambridge, Massachusetts. Applicants must be authorized to work in the United States.

Requirements

10+ years, or equivalent depth, in electromechanical product development.
Strong mechanical architecture and product-design judgment, including the ability to assess whole-system tradeoffs.
Track record of delivering designs that made it through pilot or production.
Ability to review CAD and identify design, assembly, and serviceability issues.
Strong experiment, test, and decision-making framework.
Fluency with control drawings, tolerances, assemblies, and manufacturability.
Experience taking a product or major subsystem from prototype toward production.
Desire to mentor other engineers without adding bureaucracy.
Authorization to work in the United States.

Nice To Haves

BOM ownership.
Supplier searches with technical and cost recommendations; contract manufacturer or supplier interface experience.
Product roadmap input.
Production-transfer experience.
People-management experience.
Robotics or mechatronics experience.
Awareness of production embedded systems and electrical interfaces.

Responsibilities

Understand the full HaloBraid machine and its architecture; identify and resolve design, tolerance, assembly, serviceability, and dependency issues.
Personally deliver individual engineering work, owning 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 test, experiment, and decision frameworks.
Apply DFM/DFA judgment and prepare for pilot builds, supplier engagement, and contract-manufacturer handoff.
Mentor engineers, establish practical best practices and standards, and strengthen the engineering culture without creating excessive process.
Collaborate with electrical, industrial design, manufacturing, and suppliers.