Company Description Universal Scientific Industrial (Shanghai) Co., Ltd. (USI) is a integral leader in electronic design and manufacturing and a pioneer in System-in-Package (SiP) technology. Together with Asteelflash and Hirschmann Car Communication, USI operates 30 production and service locations across Asia, Europe, the Americas, and Africa. The company delivers diversified electronic products and integrated D(MS)² services, including design, manufacturing, miniaturization, industrial software and hardware solutions, and material procurement, logistics, and maintenance. As a subsidiary of ASE Technology Holding Co., Ltd., USI offers international career opportunities and exposure to advanced manufacturing technologies. Applicants can learn more

about US
I at www.usiglobal.com and through its LinkedIn and YouTube channels. Role Description This is a full-time, on-site Manufacturing Process Engineer role based in Guadalajara, JAL. The Manufacturing Process Engineer will design, optimize, and maintain production processes for electronic products, ensuring efficiency, quality, and safety standards are met. Daily responsibilities include analyzing process performance data, troubleshooting issues on the manufacturing floor, and collaborating with cross-functional teams such as design, quality, and maintenance to implement improvements. The role also involves developing and updating process documentation, supporting new product introductions, and driving cost-reduction initiatives through continuous improvement. The engineer will participate in root cause analysis, recommend corrective actions,



and help train production staff on new or updated processes. Qualifications
• Extensive expertise in Selective Soldering Process Engineering for PCB Assembly (PCBA) manufacturing, including process characterization, recipe development, parameter optimization, and qualification of through-hole soldering applications.
• Advanced knowledge of ERSA selective soldering equipment (Versaflow series or equivalent), including machine setup, process programming, nozzle selection, fluxing strategies, preheating profiles, solder wave optimization, and process validation.
• Strong capability in process characterization and control, utilizing Design of Experiments (DOE), process capability analysis, thermal profiling, and Statistical Process Control (SPC) to achieve robust and repeatable soldering performance.
• Proven experience in developing, validating, and maintaining soldering processes that comply with IPC-A-610, IPC-J-STD-001, and customer-specific quality requirements, ensuring high first-pass yield and defect reduction.
• Hands-on expertise in preventive, predictive, and corrective maintenance of ERSA selective soldering systems, including solder pot management, flux delivery systems, nitrogen systems,



conveyor mechanisms, preheating modules, pumps, and motion control components.
• Strong analytical and troubleshooting skills for identifying and eliminating soldering defects such as insufficient fill, non-wetting, dewetting, solder bridging, icicles, blowholes, and flux-related anomalies through systematic root cause analysis.
• Experience leading process improvement initiatives using Lean Manufacturing, Six Sigma, PFMEA, Control Plans, and Continuous Improvement methodologies to enhance productivity, equipment uptime, yield, and overall equipment effectiveness (OEE).
• Ability to lead cross-functional teams involving Manufacturing, Quality, Maintenance, Product Engineering, and Suppliers to support new product introductions (NPI), process transfers, and manufacturing scale-up activities.
• Strong understanding of electronics manufacturing quality systems, ESD controls, safety requirements, and environmental compliance standards applicable to high-reliability PCBA production environments.
• Bachelor's degree or higher in Engineering (Electronic, Manufacturing, Industrial, Mechanical, Mechatronics, Chemical, or related discipline) with significant experience supporting automated selective soldering operations in high-volume manufacturing environments.
• Proven track record of driving process excellence through equipment characterization, soldering technology implementation, maintenance optimization, and continuous improvement of ERSA selective soldering platforms.

📌 Manufacturing Process Engineer (Guadalajara)
🏢 Universal Scientific Industrial Co.
📍 Guadalajara