Bilingual Support Engineer - Substrate & RF Expert

Cesna Recruitment; Cupertino (CA); On-site; USD 150,000 - 210,000; Full time

Job summary

Cesna Recruitment is seeking a senior packaging substrate expert to provide technical support for customer development programs and drive performance improvements across multiple projects. You will lead design reviews, guide BOM/substrate choices, and coordinate with R&D and manufacturing teams to ensure readiness for mass production.

The role requires 10+ years in substrate development or related areas, strong communication, and the ability to travel on-site to customer sites in the U.S.

Qualifications

• Bachelor's degree or higher in a relevant field.
• 10+ years in package substrate development, process, or customer engineering.
• Proven record leading substrate projects through mass production.
• Ability to translate customer requirements into technical solutions.
• Deep knowledge of substrate processes, materials, structures, and design rules.
• Hands-on experience with ABF, ETS, Hybrid Stack-up, Cavity, Fine Pattern, RF.
• Experience in NPI, yield improvement, and production transfer.
• Six Sigma Green Belt or PMP preferred.

Responsibilities

• Provide technical support for customer development programs (Mobile AiP, SiP, FC-CSP, RF).
• Resolve technical issues and drive performance stabilization at the customer.
• Identify and develop PoC opportunities through customer engagement.
• Guide BOM and substrate structure selection using LGIT technicalsolutions.
• Lead design reviews, TRA assessments, yield improvement, and production readiness.
• Coordinate between customer engineering and LGIT R&D, Process, Quality, and Manufacturing.

Skills

Bilingual English Korean

Customer relationship management

Presentation skills

Project management

Problem solving

MS Office

Education

Bachelor's degree or higher in Engineering, Materials Science, Chemistry, or related field

Job description

Cesna Recruitment is seeking a senior packaging substrate expert to provide technical support for customer development programs and drive performance improvements across multiple projects. You will lead design reviews, guide BOM/substrate choices, and coordinate with R&D and manufacturing teams to ensure readiness for mass production.

The role requires 10+ years in substrate development or related areas, strong communication, and the ability to travel on-site to customer sites in the U.S.