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Description of the offer

📍 Location: Roncq (59223), (relocation possible within a 5 km radius before the end of the internship)

📅 Desired start date: early February 2026

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About Weenav

Our company: Weenav is a French start-up based in Roncq (Lille metropolitan area), founded by three childhood friends who are engineers — two specialists in smart electric vehicles and one expert in information technology. Our core business: designing, equipping and integrating high-powered electric and hybrid engines into new or existing boats, for cleaner and more enjoyable navigation.

Our mission: we develop innovative, quiet and fuel-efficient propulsion solutions to significantly reduce CO₂ emissions and hydrocarbon discharges, while improving comfort on board. Conversion (replacing a combustion engine with an electric motor) can reduce the carbon footprint by up to 56% compared to building a new electric boat, while retaining the hull and equipment.

Our products:

• KRONOS: A powerful and adaptable outboard motor designed for fast boats and dynamic sailing.

• ARION: A robust and discreet inboard engine, integrated into the ship's bilge for smooth, vibration-free navigation.

• DORIS: A control handle specially designed for electric motors

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A turnkey solution: Beyond its products, Weenav supports its customers from start to finish: technical studies, custom design, on-board integration, regulatory compliance. This integrated approach makes Weenav a trusted partner in a rapidly changing maritime market.

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A promising position: With 35 million boats in circulation worldwide and an estimated market potential of £16 billion over the next decade, Weenav is at the crossroads of the energy transition and demanding nautical uses: sustainability, performance, silence.

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Internship context 

As part of our efforts to improve our products and create new accessories and motorisation systems, Weenav is looking for an engineering intern for a period of 4 to 6 months. Your responsibilities will include needs analysis, data consolidation, design/prototyping and electrical diagrams.

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Main responsibilities 

Under the supervision of our team of engineers, the electromechanical engineering assistant intern will participate in the following tasks:

• Input data management for each study: Collect, organise and analyse the information required for system design and sizing.

• Analysis of customer or internal specifications: Understanding requirements, formalising technical constraints and proposing appropriate solutions.

• Design and prototyping of new products: Participate in the development of electric motor systems and related accessories.

• Creation and adaptation of electrical diagrams: Design functional and integration diagrams for various projects.

• Optimisation of existing products: Contribute to improving the performance, functionality, reliability and cost of Weenav products.

• Improvement of current processes: Assembly, manufacturing.

• Technical documentation writing: Assembly range, user manual, design report, maintenance plan.

• Participation in technical testing and validation: Monitoring assembly, testing and field feedback on prototypes.  

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Desired profile 

• Student at an engineering school (or equivalent) specialising in mechanical, electromechanical or mechatronic design.
• Good command of CAD tools – knowledge of Fusion 360 is a real asset.
• Knowledge of industrial or embedded electrical systems would be appreciated.
• Analytical mind, technical curiosity and rigour in work.
• Ability to work as part of a team on cross-functional projects and communicate effectively.
• A taste for innovation, boating and practical projects.

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What we offer 

• A rewarding experience within a rapidly expanding start-up.

• Supervision by experienced and passionate engineers.

• Direct involvement in innovative projects with a significant environmental impact.

• A corporate culture focused on learning, autonomy and team spirit.

• Gratuity according to statutory scales.

Duration: 4 to 6 months

Start of internship: Early February 2026