Mechanical Engineer

About MDC Precision MDC Precision is a leading global provider of high-quality vacuum technology, precision-engineered components, and advanced manufacturing solutions. With a history dating back to 1975, MDC serves customers across semiconductor, aerospace, research, energy, and advanced technology industries. Our capabilities include high- and ultra-high-vacuum components, precision weldments, gas delivery systems, ceramic-to-metal sealing solutions, and custom-engineered assemblies. We are committed to engineering excellence, product innovation, and reliable customer solutions. Position Summary MDC Precision is seeking an experienced Senior Mechanical Engineer to join our Hayward engineering team. This role leads design, development, and manufacturing support for precision-engineered products, including gas delivery assemblies, welded components, and vacuum systems primarily serving the semiconductor industry. The engineer will develop product designs, manufacturing documentation, and customer-specific solutions; drive continuous improvement; collaborate with cross-functional teams; and mentor junior technical colleagues while balancing quality, cost, and delivery objectives. Mechanical Design & Product Development Design and modify mechanical components, assemblies, gas line weldments, and vacuum products to meet customer and manufacturing requirements. Create and maintain 3D models, engineering drawings, bills of materials (BOMs), and technical documentation. Evaluate customer RFQs and specifications and develop practical, cost-effective engineering solutions. Lead engineering change requests (ECRs) and support engineering change orders (ECOs). Apply material selection, strength of materials, tolerance analysis, and design-for-manufacturability principles. Review engineering drawings and specifications for accuracy and compliance. Manufacturing Engineering & Production Support Develop and improve manufacturing routers, work instructions, assembly procedures, and production documentation. Partner with Operations to optimize fabrication, welding, assembly, and production workflows. Design or improve tooling, fixtures, and production support equipment. Troubleshoot manufacturing issues, improve yields, and reduce scrap and rework. Support time studies, work cell layouts, and productivity initiatives. Develop standardized assembly and test procedures with visual instructions and Lean methods. Identify and implement improvements in product performance, quality, process efficiency, and cost. Investigate manufacturing issues with Quality; perform root cause analysis and corrective action. Participate in Material Review Board (MRB) activities and disposition recommendations. Improve first-pass yield and cycle time, and assess the impacts of engineering changes. Cross-Functional Collaboration & Technical Leadership Collaborate with Sales, Manufacturing, Quality, Purchasing, and Supply Chain on customer and business requirements. Support quotations, design reviews, and new product introduction. Work with suppliers on specifications, design changes, manufacturability, and cost improvements. Prioritize RFQs, drawing updates, router revisions, and engineering assignments. Mentor junior engineers, designers, and drafting personnel. Participate in design reviews, production planning, and improvement meetings. Required Qualifications Bachelor's degree in Mechanical, Manufacturing, Industrial Engineering, or a closely related discipline. At least 5 years of relevant experience in mechanical design, precision manufacturing, or manufacturing engineering. Experience designing mechanical components and assemblies and preparing detailed 3D CAD drawings. Knowledge of materials, tolerances, fabrication processes, and manufacturing methods. Experience with BOMs, manufacturing routers, engineering documentation, and ERP/MRP systems. Ability to interpret engineering drawings, specifications, and customer requirements. Strong problem-solving, communication, collaboration, and project-prioritization skills. Preferred Qualifications Experience with semiconductor equipment, vacuum technology, gas delivery systems, or precision manufacturing. Knowledge of stainless steel fabrication, precision welding, tubing assemblies, and vacuum-compatible components. SolidWorks or comparable 3D CAD software; GD&T knowledge. Experience with Lean Manufacturing, design for manufacturability, engineering change management, and corrective actions. Experience mentoring technical staff and improving production costs and efficiency. Technical expertise and practical manufacturing knowledge. Structured problem solving and sound engineering judgment. Cross-functional collaboration and customer focus. Continuous improvement and technical leadership. Work Environment & Physical Requirements This is an on-site position in Hayward, California. Work is approximately 60% office-based and 40% in manufacturing areas. Regular computer and engineering software use is required, along with periodic walking, standing, bending, and movement throughout production areas. Occasional lifting of items up to 25 pounds may be required. Manufacturing areas may have varying noise levels and industrial safety requirements. Reasonable accommodations may be made to enable qualified individuals with disabilities to perform the essential functions of this position. Why Join MDC Precision? Contribute to precision-engineered products used in advanced technology applications. Join a collaborative team that values engineering expertise, innovation, manufacturing excellence, and continuous improvement. #J-18808-Ljbffr