Job Description Join the Fusion and Modular Nuclear Business Unit Assystem has an exciting opportunity for a Senior Mechanical Engineer to join our expanding Fusion and Modular Nuclear (FMN) business unit. As leaders in the design and development of new technologies, you will have the opportunity to work across multiple cutting-edge projects developing technical solutions making net-zero power generation a reality. Your mission: Take the Helm: Lead assigned project tasks, managing and planning for a dynamic team of engineers while coordinating with project management. ️ Innovate & Create: Develop high-quality engineering solutions across a broad range of topics and activities. Communicate Brilliance: Provide feedback on technical development and project delivery to the Lead Engineer and Project Manager. Team Leadership: Guide small teams of engineers in delivering key project tasks. Mentor & Guide: Offer technical guidance and mentorship to team members, especially junior or graduate engineers. ⏱️ Master Your Time: Efficiently manage your time to deliver within agreed timescales, target costs, and quality standards with minimal supervision. Why Join the Community of Switchers? Over 55 years in nuclear engineering. Ranked among the top 3 largest nuclear engineering companies. Attractive social benefits, including an engaging Employee Committee and holiday bonuses. Ongoing training with numerous career opportunities. 70% of our managers are promoted internally Hybrid work: 1-2 days remote per week.