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Researcher - Droplet Generation

ASML US, LLC
life insurance, vacation time, paid holidays, 401(k), remote work
United States, California, San Diego
17075 Thornmint Ct (Show on map)
Jan 07, 2026
Introduction to the job

ASML is one of the world's leading manufacturers of lithography systems that help enable Moore's Law and the creation of increasingly powerful and capable electronic devices. At our San Diego location we are renowned for developing both deep ultraviolet (DUV) lithography light sources and next generation extreme ultraviolet (EUV) light sources. We are a multinational company with over 70 locations in 16 countries, headquartered in Veldhoven, the Netherlands.

The EUV lithography process begins when droplets of liquid tin are injected into the focal point of a high-powered laser, where they are vaporized/ionized to generate 13.5-nm light. The stable delivery of these droplets (in size, speed, spacing, and positioning) is accomplished via the Droplet Generator functional module. Functional development involves challenges in the fields of high-pressure mechanics, fluid dynamics, high-speed controls, surface chemistry, glasses, liquid metal interactions, and more.

The complexity of the droplet generation requirements put exciting demands on the Droplet Generation Staff Researcher, who will be working within a multidisciplinary team mastering complex engineering activities of significant technical depth related to multiple phases of the product development, including technology pathfinding, theoretical and experimental feasibility studies, design and development activities, manufacturing process development and factory introduction, problem solving and troubleshooting. Ideal candidates will be incredibly organized, have a strong knowledge of applied physics, metrology, controls, experiment design, and process development, hands-on knowledge of diverse vacuum and gas pressurized equipment, and have a genuine desire to push the boundaries of these technologies forward.

Role and responsibilities
  • Guide development of high-level architecture for the formation of tin droplets in the EUV source, as well as metrology systems for measuring the performance of the system, in order to improve the EUV generation process; improve droplet formation models via experimental validation; build and maintain model improvement roadmaps.

  • Provide input to technology roadmaps and identify key scientific learning objectives and define corresponding experimental design to arrive at design guidelines, performance requirements and procedures for product development and engineering design.

  • Develop, validate, and prototype manufacturing processes and practices to deliver optimized process flows to ensure sub-module and module performance repeatability and quality.

  • Develop and execute module, sub-module and integrated system performance tests, analyze test results and extract actionable knowledge from sub-module to full-system levels.

  • Troubleshoot and isolate equipment problems in laboratory and integration testing, assist in analyzing, diagnosing, and troubleshooting problems in the factory and at customer sites remotely and in person.

  • Document learning and communicate knowledge to engineering and product development teams to guide product improvement and release of new product nodes.

  • Work independently and in teams to deliver on a stated objective, whether it be the pursuit of new knowledge, the demonstration of a new capability, or the characterization of existing performance.

  • Perform other duties as assigned.

Education and experience
  • PhD degree in a STEM field with a minimum of 5+ years of research and development experience; MS degree with 7+ experience will be considered.

  • Experience with semiconductor capital equipment development is a strong plus

Skills
  • Deep understanding of scientific research methods and strong scientific curiosity

  • Ability to clearly and logically communicate ideas and knowledge to various audiences, covering full range from understanding of large, complex systems to individual technical details.

  • Demonstrated ability to lead a research project involving multiple stakeholders and constraints, balancing functional requirements against aggressive timelines and resource limitations.

  • Excellent self-actuated time and task management skills with the ability to distinguish and focus on highest-impact actions.

  • Hands-on experience with complex system design and build, including rapid prototyping, characterization and troubleshooting, and system-level demonstrations.

  • Extensive experience with experimental data analysis and development of data analysis tools with, for instance, Matlab or Python and data acquisition systems such as NI Labview.

  • Experience with Process Development, Design of Experiments, and Statistical Process Controls methodology.

Other Information

  • This position is located on-site in San Diego, CA . It requires onsite presence to attend in-person work-related events, trainings and meetings and to further ensure teamwork, collaboration and innovation.
  • A flexible workplace arrangement may be available to employees working in roles conducive to remote work (up to two days a week).
  • Routinely required to sit; walk; talk; hear; use hands to keyboard, finger, handle, and feel; stoop, kneel, crouch, twist, reach, and stretch. Occasionally required to move around the campus.
  • Occasionally lift and/or move up to 20 pounds.
  • Specific vision abilities required by this job include close vision, color vision, peripheral vision, depth perception, and ability to adjust focus.
  • Must be willing to work in a clean room environment, wearing coveralls, hoods, booties, safety glasses and gloves for entire duration of shift.
  • While performing the duties of this job, the employee routinely is required to sit; walk; talk; hear; use hands to keyboard, finger, handle, and feel; stoop, kneel, crouch, twist, reach, and stretch.

EOE AA M/F/Veteran/Disability

Potential candidates will meet the education and experience requirements provided on the above job description and excel in completing the listed responsibilities for this role. All candidates receiving an offer of employment must successfully complete a background check band any other tests that may be required.

#LI-MO1

The current base annual salary range for this role is currently:

$133,500-222,500

Pay scales are determined by role, level, location and alignment with market data. Individual pay is determined through interviews and an assessment of several factors that that are unique to each candidate, including but not limited to job-related skills, relevant education and experience, certifications, abilities of the candidate and pay relative to other team members.

The Company offers employees and their families, medical, dental, vision, and basic life insurance. Employees are able to participate in the Company's 401k plan. Employees will also receive eight (8) hours of vacation leave every month and (13) paid holidays throughout the calendar year. For more information, please contact the Recruiter or click on this link Compensation & Benefits in the US.

All new ASML jobs have a minimum application deadline of 10 days.

This position requires access to controlled technology, as defined in the United States Export Administration Regulations (15 C.F.R. * 730, et seq.). Qualified candidates must be legally authorized to access such controlled technology prior to beginning work. Business demands may require ASML to proceed with candidates who are immediately eligible to access controlled technology.

Inclusion and diversity

ASML is an Equal Opportunity Employer that values and respects the importance of a diverse and inclusive workforce. It is the policy of the company to recruit, hire, train and promote persons in all job titles without regard to race, color, religion, sex, age, national origin, veteran status, disability, sexual orientation, or gender identity. We recognize that inclusion and diversity is a driving force in the success of our company.

Need to know more about applying for a job at ASML? Read our frequently asked questions.

Request an Accommodation

ASML provides reasonable accommodations to applicants for ASML employment and ASML employees with disabilities. An accommodation is a change in work rules, facilities, or conditions which enable an individual with a disability to apply for a job, perform the essential functions of a job, and/or enjoy equal access to the benefits and privileges of employment. If you are in need of an accommodation to complete an application, participate in an interview, or otherwise participate in the employee pre-selection process, please send an email to USHR_Accommodation@asml.com to initiate the company's reasonable accommodation process.

Please note: This email address is solely intended to provide a method for applicants to initiate ASML's process to request accommodation(s). Any recruitment questions should be directed to the designated Talent Acquisition member for the position.

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