Principal Mechanical Engineer / Systems Engineer
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Before you apply
SalaryNo pay range posted
LocationCambridge, MA USA
Work modeon-site
Typefull-time
SeniorityLead
Experience10+ yrs
DepartmentEngineering
EquityIncluded
Company size4+ people
PostedOct 20, 2026 · 2w ago
Verified live2d ago
Reposted once in the last 6 monthsEarliest listing first seen Sep 11, 2026
How we check a job is still liveAt a glanceSummarised by Seekless from the posting.
10+ years, or equivalent depth, in electromechanical product development
Strong mechanical architecture and product-design judgment
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 / decision-making framework
Fluency with control drawings, tolerances, assemblies, and manufacturability
Taken a product or a major subsystem from prototype toward production
Desire to mentor other engineers without adding bureaucracy
User-centric
Low ego, adaptable, collaborative
Fast, honest iterator
Driven by the mission
Clear communicator
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
Authorization to work in the US
Skills
CAD
3D CAD
DFM
DFA
BOM
embedded
electrical interface
computer vision
robotics
mechatronics
Benefits
Health insurance
Dental insurance
Vision insurance
Equity
Unlimited PTO
Free parking
About the company
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.
You will
•
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
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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.
You have
•
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
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 of Working With Us
•
100% medical premium coverage, comprehensive dental and vision benefits.
•
Meaningful equity.
•
12 company holidays and unlimited PTO.
•
Free parking onsite.
Onsite Work
This is an onsite position at our office/lab in Cambridge, MA. You must have authorization to work in the US.
Don’t Meet Every Requirement?
If you’re excited about this role but your past experience doesn’t align with every single line, we encourage you to apply anyway.
Equal Opportunity Employer
We are an equal opportunity employer committed to diversity and inclusion in the workplace. We prohibit discrimination and harassment of any kind based on race, color, sex, religion, sexual orientation, national origin, disability, genetic information, pregnancy, or any other protected characteristic as outlined by federal, state, or local laws. This policy applies to all employment practices within our organization.
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