Offshore Structural Engineer (M/F)

About Mareal

Mareal is a specialized offshore engineering company conducting studies from conceptual design to execution and construction drawings for the oil & gas and marine renewable energy sectors. Our team of 25 engineers and designers operates from offices in L’Haÿ-les-Roses and Nantes.

We are proud to be part of the STAPEM Group, which allows us to offer turnkey solutions and operate on an international scale. With strong roots in conventional energy, Mareal has evolved into a key player and innovation driver in offshore renewables. In 2024, this sector represented 75% of our revenue—a clear reflection of our strong commitment to energy transition.

We excel in the design of offshore steel and reinforced concrete structures, with a solid track record in offshore wind. Our approach is rooted in technical excellence and rigorous project management, enhanced by internal expertise and strategic partnerships—both within STAPEM and externally—expanding our service capabilities.

Mareal has designed and continues to develop the XCF, a floating foundation concept for wind turbines capable of supporting 20+ MW units.

To support our growth, we are looking for an experienced Offshore Structural Engineer (M/F) to join our team in Nantes.

Position Overview

As an Offshore Structural Engineer, you will play a central role in the design and verification of fixed and floating offshore structures, especially for offshore wind. You will be actively involved in the development of Mareal’s floating wind turbine foundation, the XCF.

Key Responsibilities

• Understand and integrate industry codes and offshore structural standards
• Conduct sizing and verification studies for offshore structures (jackets, topsides, monopiles, secondary structures, etc.), including the XCF floater
• Perform static, dynamic, modal, and fatigue analyses using SACS, ABAQUS, and internal toolchains
• Analyze results and produce high-quality, client-ready calculation notes and technical reports
• Collaborate closely with drafting teams
• Participate in design reviews and technical meetings with clients and partners
• Work alongside project managers and strategic partners
• Develop Python scripts to optimize and automate calculation chains
• Incorporate offshore-specific constraints (waves, wind, currents, corrosion, lifting, transport, and installation)
• Contribute to continuous improvement by proposing and implementing internal method enhancements

Qualifications

Education & Background

• Engineering degree in offshore structures or civil engineering (e.g., Ecole Centrale, ENSTA Paris/Bretagne, INSA, ENPC, CHEBAP, or equivalent Master’s degree)
• At least 5 years of experience in offshore structural design and analysis (steel and/or concrete)

Languages

• Fluent in English (written and spoken)
• French is a plus

Technical Skills

• Proficiency in SACS and/or ABAQUS
• Strong foundation in analytical and numerical calculations
• Experience in Python development or equivalent
• Knowledge of prestressed reinforced concrete is a plus

Soft Skills

• Strong team spirit and desire to contribute to a growing team
• Excellent communication skills in a professional, international context

Mareal Advantage

• Exciting mobility opportunities within the STAPEM Group
• Great location in central Nantes: 2 hours from Paris, 45 minutes from the sea
• Attractive benefits: RTT, health insurance for individuals and families, 50% meal voucher coverage
• Flexible work-from-home policy: up to 8 days/month

If you’re ready to take on this challenge in a forward-thinking and dynamic company, we encourage you to apply today.