Senior Manufacturing Engineer

Position Summary The Senior Manufacturing Engineer provides technical leadership for manufacturing operations supporting both existing products and new product introductions, with a strong emphasis on plastic injection molding processes, tooling, automation, and process optimization. What You’ll Do Lead Design for Manufacturing (DFM) and Design for Assembly (DFA) efforts focused on injection molded components, improving manufacturability, quality, and cost. Develop, validate, and optimize injection molding processes, tooling, fixtures, automation systems, and secondary operations. Establish and refine molding parameters (fill, pack, hold, cooling, resin drying, cycle time) using scientific molding principles. Support mold design reviews, tooling qualification, first article inspection, and production readiness. Troubleshoot molding defects such as flash, sink, short shots, warp, splay, burns, and dimensional variation. Partner with tooling vendors, resin suppliers, and automation integrators to improve mold performance and uptime. Evaluate and implement advanced manufacturing technologies including robotics, vision systems, and smart manufacturing solutions. Lead new product introduction (NPI), process validation (IQ/OQ/PQ), DOE studies, and production launch readiness. Develop scalable manufacturing strategies that support growth, efficiency, and long-term performance. Author and maintain key documentation including PFMEA, control plans, work instructions, and process flows. Lead engineering changes including tolerance analysis, resin evaluation, and mold/process improvements. Serve as technical lead for complex manufacturing and quality challenges, driving root cause analysis and corrective actions. Drive continuous improvement using Lean, Six Sigma, Kaizen, and scientific molding methodologies. Mentor Manufacturing Engineers and Process Technicians, supporting technical growth and capability development. Partner cross-functionally with Engineering, Operations, Quality, Supply Chain, and external stakeholders to achieve business objectives. What You Bring Required: Bachelor's degree in Mechanical Engineering, Manufacturing Engineering, Industrial Engineering, Plastics Engineering, or related field. 5+ years of manufacturing engineering experience, ideally supporting injection molding or high-volume production environments. Hands‑on experience with injection molding process development, scientific molding, tooling validation, and troubleshooting. Preferred: Experience with automation, robotics, vision systems, or advanced manufacturing technologies. Knowledge of engineered thermoplastics, resin behavior, and mold flow principles. Deep understanding of injection molding processes, tooling design, and process optimization. Strong troubleshooting capability across molding defects, cycle optimization, and process stability. Experience with validation (IQ/OQ/PQ), DOE, SPC, and statistical analysis. Knowledge of GD&T, tolerance analysis, and plastic part design considerations. Familiarity with Lean manufacturing and continuous improvement methodologies. Strong analytical and data‑driven problem‑solving skills. Ability to lead complex projects and influence cross‑functional teams. Excellent documentation and process standardization practices. Effective communicator with the ability to work across all levels of the organization. Passion for innovation, continuous improvement, and technical excellence. Benefits Competitive compensation. 401(k) with company match. Medical, dental, and vision coverage. Paid vacation and holidays. Access to Marmon Holdings company‐wide initiatives. We are an equal opportunity employer, and all applicants will be considered for employment without attention to their membership in any protected class. #J-18808-Ljbffr