Principal Applications Engineer – Mass Spectrometry

We are hiring for one of our reputed MNC for a full‑time role in Milpitas, California, USA

Our client is advancing clinical diagnostics, life science research, semiconductor and industrial process control through digital molecular profiling. Their products deliver actionable results that inform time‑critical decisions.

The successful Principal Applications Scientist candidate will report to the

Director of Applications and will work closely with other functions of the

company, including business development, marketing, sale, and engineering. The

Principal Applications Scientist is responsible for leading the development efforts

of application‑specific solutions around the company’s flagship product. The candidate

is expected to play a major role in leading technical engagements with customers

in the area semiconductor manufacturing and its vertical applications, preparing

and presenting customer‑facing material, contributing to product roadmaps, and

supporting new product definition and introduction.

• Develop intricate operational knowledge of MS products under development.
• Provide hands‑on experience with instrument configuration, calibration, validation, and performance testing.
• Develop new market‑driven applications in concert with potential customers.
• Support the products evaluations at semiconductor OEMs and fabs
• Provide on‑site set‑up, debug, and performance analysis of the products systems
• Identify key application‑specific requirements early in the customer
• Develop application‑specific solution bundles based on tailored HW and SW features
• Develop a support plan and an execution timeline for key customer
• Strengthen key customer relations through technical competence and relationship management skills.
• Identify new application opportunities and write internal or customer‑facing proposals
• Deliver customer‑facing presentations and conduct pre‑sale product demonstrations.
• Develop and deliver HW/SW‑related operational training sessions to customers.
• Acquire and analyze samples from prospective customers and provide sample analysis data reports to actively close sales opportunities.
• Contribute to and support definitions of next generation product roadmaps.
• Contribute to product development efforts by breaking down system specifications into component performance requirements and participate in the development review process.

• M.Sc. degree with 6+ years’ work experience or Ph.D. with 2+ yrs. work experience in Physics, Chemistry, Electrical Engineering, or a related field
• 5+ years hands‑on experience with the development of mass‑spectrometry based solutions for novel applications.
• Experience with analytical instruments such as mass spectrometers, gas analyzers, or plasma diagnostics
• Familiarity with semiconductor manufacturing processes (etch, CVD, ALD)
• Sound understanding of the new product introduction process, including the definition of new product requirements, prototypes evaluation, and ability to diagnose and debug systems level issues.
• Proven success in delivering customer‑facing presentations and conducting
• Excellent written and verbal communications skills
• Knowledge of control hardware e.g. PLC and software scripting using platforms e.g. Python and Lab‑view is desirable.
• Up to 30% domestic and international travel expectations

• Self‑motivated and comfortable working in early‑stage or dynamic
• Strong team‑building personality and collaborative mindset

Excellence in managing customer relationships

Achieving high customer satisfaction

Achieving high rate of successful Aston evaluations

Potential path toward product management or field solutions leadership.

• Experience in analytical instrumentation e.g. Mass spectrometers and gas
• Familiarity with semiconductor manufacturing processes
• Self‑motivated and constantly engaging with customers,
• Travel availability

We are committed to diversity and inclusivity in our hiring practices. Interested candidates for the above position kindly share your CVs on ca Thank you.