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At Heart Aerospace we develop the ES-30, a regional hybrid-electric airplane with a capacity of 30 passengers, an electric zero-emission range of 200 km and an extended hybrid range of 400 km. Heart is targeting type certification of the ES-30 by the end of the decade. Your mission We are seeking a hands-on, driven Manufacturing Engineer to lead key builds for the ES-30 hybrid-electric aircraft. As we continue to expand our vertical integration, this role offers a unique opportunity to take full ownership of manufacturing process development, from design to achieving production rate.   You will play a critical role in Heart’s success, working closely with technicians, design engineers, and supply chain partners to bring complex components and assemblies from prototype to scalable production. This is a highly collaborative, fast-paced role at the core of our mission to revolutionize regional air travel.   Key responsibilities include but are not limited to:     Process Development & Optimization   Design and implement scalable manufacturing processes for aircraft structures, propulsion systems, avionics, batteries, and other critical subsystems (multiple roles are open across teams)  Develop and optimize workflows to improve build efficiency, quality, and repeatability   Proactively identify and resolve production bottlenecks using root cause analysis and continuous improvement techniques     Tooling & Equipment   Design and specify custom tooling, fixtures, and solutions to support precision assembly and fabrication   Collaborate with external vendors and internal teams to source or fabricate required equipment   Support automation initiatives and ergonomic improvements across the manufacturing floor     Prototyping & Production Builds   Lead the execution of prototype builds and transition processes into low- and high-rate production   Work closely with technicians on first article builds, ensuring safe, efficient, and repeatable methods   Implement in-line quality checks and provide real-time troubleshooting during assembly     Cross-Functional Collaboration   Partner with Design Engineering to drive DFM/DFA (Design for Manufacturability/Assembly) feedback   Develop and execute sourcing strategies by assessing supplier capabilities, and managing outsourcing timelines and budgets to ensure program alignment   Ensure quality is built into the product by defining clear inspection criteria and implementing fast, cost-effective corrective actions     Documentation & Standards   Create and maintain detailed work instructions, process documentation, and standard operating procedures (SOPs)   Contribute to the development of manufacturing standards and best practices as the company scales   Ensure compliance with safety, regulatory, and quality requirements     Skills & Requirements   Bachelor’s degree in Mechanical, Aerospace, Manufacturing, or Industrial Engineering (or equivalent experience)   3+ years of experience in a fast-paced manufacturing or production environment (internship or co-op experience counts)   Proficiency in CAD (e.g., CATIA, NX, SolidWorks)    Strong understanding of materials, GD&T, machining, welding, composites, and/or assembly techniques   Experience working with cross-functional teams in design, quality, and production   Bias toward action, attention to detail, and a passion for hands-on problem-solving     These Qualifications Would Be Nice To Have Experience in aerospace, automotive, eVTOL, or electric propulsion manufacturing   Exposure to high-voltage systems, thermal mana