🎯 About the job

🥊Who We Are:

GROWL is a French-American startup leading the AI fitness movement, building the world’s first physical AI coach for the home.

While most AI remains trapped behind screens, GROWL gives intelligence a physical form. Thanks to our unique hardware platform, our AI trainer moves, responds, and engages with users in real time, creating a deeply human and interactive fitness experience.

We sit at the intersection of fitness, technology, and artificial intelligence, pioneering how AI can revolutionize at-home physical training for the whole family.

We’ve proven strong product-market fit: we recently secured $570k in pre-orders in just 30 days and are backed by a team of industry leaders from Peloton, Tonal, Amazon, Aescape and Hydrow. We are now ready to bring GROWL to market.

Our mission for the next two years is:

• To ramp up mass production of our platform with our Tier-1 industrial partners.
• To execute our commercial rollout across the US.
• To push the boundaries of physical AI for fitness with "Emma," our generative AI trainer.

Our product? A unique patented platform that tightly integrates a punching bag and its state of the art shock absorption system with a 4K ultra-low-latency ultra-short-throw projector, a gaming computer, and more than 20 sensors (2D & 3D cameras, accelerometers…).

Our local perception stack provides full situational awareness to our cloud-based multi-agent AI, making our coach alive and able to monitor and train.

Sounds impossible?

• Take a look of the product in action here
• Meet Emma, the next evolution of GROWL

Sounds exciting? Talk to us! We are looking for a talented, hands-on Junior Mechanical Engineer to join our team.

👤 Who You Are

GROWL is seeking a Junior Mechanical Engineer to join its tech team. (This position is open to an engineer with a few years of experience, and also for a first job)

You have a passion for technology, a curious mind and a maker spirit. You are looking for a hardcore tech environment with multiple opportunities for learning and growth. You’ll be working alongside other experienced hardware and software engineers to design, test, and manufacture prototypes and mass-production versions of our product.

Soft Skills:

• Ability to work in a fast-paced environment with rapidly evolving responsibilities
• Ability to collaborate effectively and positively with other engineers (junior to senior levels)
• Ability to work independently and to implement best-in-class engineering practices without external guidance
• Interest in the American culture and in travelling to the US to better understand our customers
• Proficient English communication (oral and written): You are able to interface effectively with native English speakers

Technical skills: Fields of expertise:

• Ability & Interest in Mechanical prototyping and manufacturing (3D printing, metal cutting, CNC, welding).
• At least DIY experience in some systems (cars, robotics, 3D printing, …)
• Strong understanding of common materials properties (metal, plastic, wood)
• Mechanical integration of electronics components experience (PCBs, sensors, cable harness)
• Vibration measurement, transmission & dampening is a plus
• Soft materials experience (PU foam, faux-leather) is a plus

Tools:

• Ability to use a large variety of shop tools (metal working, wood working, plastic assembly, sanding, painting, …)
• 3D CAD knowledge: We use Onshape, but any experience is valid (SolidWorks, Fusion, etc.).
• Experience with 2D drawing and tolerances for manufacturing
• Experience with simulation (FEA): Thermal and stress analysis
• Experience with BOM creation and parts numbers/versions

Prototyping/Machining:

• Rapid prototyping (FDM/SLA/CNC/welding) experience: Ability to set up, use and maintain your own shop
• Ability to put quick experiments together to validate concepts (test and learn)
• Hands-on problem-solving with machining and/or welding experience is a plus

Applications:

• Consumer electronics experience: participation in the design of at least one mass-produced B2C product is a plus
• Large metal device, machine or consumer goods design experience is a plus

Industrialization:

• Design for manufacturing (DFM) experience is a plus
• Experience collaborating with an OEM/ODM in Asia or South America is a plus

📋 Role Overview

• Role: Junior Mechanical Engineer
• Localization: Paris 13th / International travels a few times a year (USA/Asia)
• Contract: CDI
• Manager: Head of Hardware

Potential of evolution: You will be joining one of the most technical environments that you can choose from. This environment offers a limitless learning ground and a great evolution potential in the short, medium and long-terms:

• Senior Mechanical Engineer
• Product development and industrialization
• and more…

Package

• Salary: 40-50k€ based on qualifications and experience
• Equity: 0.1%-0.3% equity based on qualifications and experience

🏗️ What You Will do

Support the internal prototyping and manufacturing company program:

• Interface directly with the Hardware Team to support them with manufacturing, integration, assembly, and testing tasks.
• Contribute to internal shop tasks (manufacturing, wiring, tooling management, shop maintenance, …)

Contribute to the company’s R&D program:

• Directly interface with the tech team to collaborate on R&D phases
• Participate in prototype/product engineering requirements:
• For internal use within the tech team
• For external use by our suppliers and engineering services providers
• Collaborate with the tech team to arbitrate prototype/product technical choices
• Collaborate with our experienced team to bring our vision of connected fitness to life through the right prototype/product iterations

Mechanical prototype/product design:

• Participate in planning, conceptualizing, and creating mechanical designs for parts of our product
• Perform engineering calculations to support design work
• Create and review technical drawings, plans and specifications
• Support the tech team with prototyping, manufacturing and testing the next product version
• Design and build working prototypes for concept testing:
• In order to validate technical concepts that correctly implement our targeted experience
• In order to give working and product-representative platforms to the software team