Design 30 m Underwater Action Camera

I am developing Spear Vision, a professional-grade diving and freediving mask with an integrated underwater camera for freediving and spearfishing.

I am looking for an experienced industrial designer/mechanical engineer with underwater product, rugged electronics, wearable technology, or dive-equipment experience to help develop the first functional prototype.

Product concept
The product will be a diving mask with an integrated camera system designed for use underwater. The target specifications are:

4K video recording
Strong low-light performance, potentially using a Sony STARVIS-type image sensor
Target operating depth of approximately 30 metres
Internal rechargeable battery
Magnetic or pogo-pin charging connection
Internal eMMC or similar flash storage
Wireless data transfer to a smartphone when the user is on the surface or in a boat
Wired data transfer as a backup option
Professional, durable construction rather than a disposable action-camera design
Minimal need to open the housing, reducing the risk of seal damage
Heat dissipation through a metal heat spreader or heat sink connected to the housing
The product must be designed with comfort, balance, visibility, waterproofing, serviceability, and diver safety in mind.

Scope of work
I would like assistance with the following:

Product architecture

Recommend a practical layout for the camera, battery, storage, charging system, and electronics.
Assess whether the electronics should be integrated into the mask body, a detachable module, or a separate sealed pod.
Identify major technical risks and recommended solutions.
Mechanical and industrial design

Develop the external form and internal arrangement of the product.
Maintain a comfortable fit and appropriate weight distribution.
Prevent the camera and electronics from obstructing the diver’s vision.
Design suitable access points for professional servicing without requiring frequent opening.
Consider corrosion-resistant materials suitable for saltwater use.
Waterproof housing design

Design a sealed enclosure suitable for the target depth.
Specify appropriate O-rings, gaskets, seals, fasteners, and materials.
Consider pressure loading, lens-window strength, mechanical tolerances, and galvanic corrosion.
Produce a sealing strategy that can be pressure-tested and repeatedly serviced.
Thermal management

Develop a practical method for transferring heat from the electronics to the external housing or surrounding water.
Consider heat spreaders, thermal pads, conductive materials, and electrical isolation.
Identify possible overheating risks during 4K recording.
Prototype-ready CAD

Create detailed 3D CAD models of the housing and relevant components.
Provide manufacturing drawings with dimensions, tolerances, materials, and surface finishes.
Design parts suitable for CNC machining, injection molding, or high-quality prototype manufacturing.
Include mounting features for the camera lens, circuit board, battery, storage, magnets, charging contacts, and seals.
Prototype development support

Recommend suitable prototype materials and manufacturing methods.
Help prepare a bill of materials.
Identify off-the-shelf components where appropriate.
Support the transition from an early prototype to a more manufacturable design.
Testing plan

Create a preliminary test plan for:
Leak testing
Pressure testing
Repeated opening and resealing
Saltwater exposure
Corrosion
Thermal performance
Impact and drop resistance
Camera and charging reliability
Clearly identify which tests must be performed by a qualified laboratory or specialist manufacturer.
Expected deliverables
The selected freelancer should ideally provide:

Initial feasibility assessment
Product architecture proposal
Concept sketches or layout options
3D CAD assembly
Detailed housing and component models
Engineering drawings
Seal and gasket specifications
Preliminary bill of materials
Thermal-management concept
Prototype manufacturing recommendations
Risk assessment and design-for-manufacturing recommendations
Waterproof and pressure-testing plan
Documentation that can later be provided to an electronics engineer, prototype manufacturer, or investor
Important limitations
This is an early-stage project, and I am currently working with a limited development budget. I would prefer to proceed in phases, rather than commissioning a complete production-ready design immediately.

The first phase should focus on:

Reviewing the concept
Identifying major technical risks
Producing a practical mechanical layout
Creating an initial CAD concept
Estimating the cost and complexity of a functional prototype
The first prototype does not need to be production-ready, but it must be designed professionally enough to support further testing and development.

The freelancer must not assume that a 3D-printed housing is automatically safe for diving. Any prototype intended for underwater use must be pressure-tested appropriately, and the final product will require professional engineering validation.

Ideal freelancer experience
Please apply only if you have relevant experience in one or more of the following:

Underwater cameras or dive equipment
Waterproof or pressure-resistant enclosures
Rugged electronics
Wearable technology
Consumer electronics housings
Industrial design for outdoor or marine products
O-ring and gasket sealing
CNC-machined or molded waterproof components
Thermal management for compact electronics
Saltwater-resistant materials and corrosion prevention
Design for manufacturing
Experience with SolidWorks, Fusion 360, Creo, or a comparable professional CAD platform is preferred.

Application requirements
Please include:

Examples of similar underwater, sealed, wearable, or ruggedized products
Your experience designing pressure-resistant housings
The CAD software you use
Your proposed approach to the project
Your estimated hourly rate or price for the first phase
The estimated time required for the first phase
Any technical concerns you immediately see in this concept
I am particularly interested in a freelancer who can give honest engineering feedback and identify problems early, rather than simply producing attractive 3D models.