Full-Time

Principal Mechanical Engineer

Posted on 10/31/2025

ASML

ASML

10,001+ employees

Manufactures photolithography systems for semiconductors

Compensation Overview

$148.1k - $246.9k/yr

+ Benefits: medical, dental, vision, basic life insurance + 401k plan + vacation + holidays

Company Does Not Provide H1B Sponsorship

San Diego, CA, USA

In Person

Up to 10% travel domestically and internationally.

Category
Mechanical Engineering (5)
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Requirements
  • Requires minimum of a Bachelor’s degree in Mechanical Engineering with a minimum of twelve (12) years of relevant work experience. Can consider a Master’s degree in Mechanical Engineering with a minimum of ten (10) years of relevant work experience.
  • Ability to translate, statistically analyze data, and effectively report problems through written and/or graphical formats.
  • Skilled in designing complex parts and / or assemblies with associated calculations and backup data.
  • Experience working with cross-functional teams and able to work on multiple tasks simultaneously.
  • Ability to delegate work as needed.
  • Experience with tolerance analysis at system and subsystem level, with the ability to generate a tolerance analysis as a deliverable for presentation to a technical group. This analysis should include, thermal, manufacturing and environmental inputs.
  • Working knowledge of engineering materials i.e. ferrous and non-ferrous/refractory metals, to include manufacturability, weldability, compatibility, etc.
  • Proficiency in Engineering Change (ECN / ECR / ECO) process required for new or revised engineering designs and documentation.
  • Proficiency in making and reviewing 2D technical drawings and application of Geometric Dimensioning & Tolerancing (GD&T) required.
  • Proficiency in Solid Modelling required. Siemens NX preferred, others strongly considered.
  • Proficiency in PLM / ERP / MRP software, Siemens Team Center preferred.
  • Experience performing and reviewing Finite Element Analysis, Ansys or NX simulation preferred, with the ability to validate with hand calculations.
  • Previous experience working at the pace of the Semiconductor industry desired.
  • Working knowledge of advanced machining and fabrication techniques is mandatory (design for manufacturing/cost). Knowledge of welding practices is a major plus.
  • Proficiency in MS Office tools (Excel, Word, Power Point, Visio & Outlook) required.
  • Ability to organize work effectively and have a systematic approach to problem solving in a dynamic work environment.
Responsibilities
  • Assists with an assigned light source sub-system project through direct technical advice, specifications/design, approvals, and collaboration with Development Engineering team.
  • Assists in providing a broad mechanical engineering design background and performs mechanical engineering analysis (stress, vibrations, thermal), design for control and distribution of inert and hazardous gases, air and water handling for thermal management of equipment and enclosures, large enclosure design, electrical component packaging, mechanical structural mounts and fixtures, design for manufacturability in low volume products, and design for configuration management.
  • Assists in generating module or system concepts to meet product requirements.
  • Assists in performing detailed design and component layout for new or improved subsystems.
  • Assumes engineering responsibility for component and subassembly test development, data acquisition, analysis, and reporting.
  • Performs tolerance analysis at system and subsystem level.
  • Performs analytical analysis for thermal and structural components and sub-modules.
  • Assists in project planning including key deliverables, timeline, and budget.
  • Works with other Engineers analysts and CAD Designers for prototype and pilot detailed design.
  • Supports driving full documentation of design including, BOM, technical drawings, test plans and procedures.
  • Responsible for the research and selection of new suppliers with potential for turn-key provision of key subsystems. Responsible for providing technical expertise in the core technology area of the potential suppliers to reveal best design path and performance.
  • Interacts closely with development engineers, scientists, suppliers, and QA to resolve quality issues.
  • Advises Project Leads with technical expertise
  • Advises and mentors lower level mechanical design engineers
  • Presents technical data to a broad audience
  • Possible travel domestic / international (10%)
  • Performs other duties as assigned.
Desired Qualifications
  • Previous experience working at the pace of the Semiconductor industry desired.

ASML designs and manufactures photolithography systems for semiconductor manufacturing. Its main products are deep ultraviolet (DUV) and extreme ultraviolet (EUV) lithography machines that print circuit patterns on silicon wafers, with EUV enabling smaller features. The company sells these systems to leading chipmakers and earns substantial revenue from installation, maintenance, and upgrades over the machines’ lifetimes. Its goal is to help continue scaling semiconductors by leading in high-end lithography and maintaining strong relationships with customers like TSMC, Samsung, and Intel.

Company Size

10,001+

Company Stage

IPO

Headquarters

Veldhoven, Netherlands

Founded

1984

Simplify Jobs

Simplify's Take

What believers are saying

  • EUV bookings surged 86% to €7.4 billion in Q4 2025 on AI demand.
  • Record €38.8 billion backlog ensures 18-24 months revenue visibility.
  • $16 billion EUV orders from SK Hynix and Samsung in 2026.

What critics are saying

  • US and Dutch export controls cut China sales from 36% to 19%.
  • 1,700 layoffs spark protests disrupting operations since April 2026.
  • Zeiss mirror shortages delay High NA EUV ramp-up through 2027.

What makes ASML unique

  • ASML holds 83% worldwide lithography market share as of 2025.
  • ASML solely supplies EUV lithography machines using 13.5 nm light.
  • ASML's EUV enables 13 nm resolution unreachable by DUV systems.

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Benefits

Flexible Work Hours

Remote Work Options

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

0%

2 year growth

0%
Bloomberg L.P.
Apr 15th, 2026
South Korea becomes ASML's largest market with $3.2B in Q1 chip tool sales

ASML Holding's largest market shifted to South Korea in the first quarter, with shipments to the country surging to 45% of net system sales, up from 22% in the previous quarter. This represents €2.84 billion in sales, compared to €1.67 billion in the preceding three months. The increase reflects South Korean memory chip makers ramping up purchases of the Dutch company's chipmaking tools to address chronic shortages driven by the artificial intelligence boom. South Korea overtook China as ASML's top market during the quarter.

Yahoo Finance
Apr 10th, 2026
Ken Fisher invests $4.8B in ASML, raises 2026 revenue guidance to $44.1B

ASML Holding holds the seventh position in billionaire Ken Fisher's AI portfolio, with a stake valued at $4.80 billion. The Dutch company maintains a near-total monopoly in extreme ultraviolet lithography systems, which are essential for manufacturing advanced semiconductor chips below five-nanometre nodes. ASML reported an order backlog of €38.8 billion at the end of 2025, up from €35.9 billion a year earlier. The company raised its 2026 revenue guidance to €34–39 billion, representing potential year-over-year growth of 4% to 19%, driven by AI chip demand. Major customers include TSMC, Samsung, Intel and SK hynix. The company faces virtually no competition due to enormous barriers to entry, requiring multi-billion-euro investments and decades of accumulated proprietary knowledge.

Yahoo Finance
Apr 8th, 2026
ASML Q1 earnings due 15 April with $9.7B revenue expected amid US export restriction threat

ASML, the world's sole manufacturer of extreme ultraviolet lithography systems, is set to report first-quarter 2026 results on 15 April. Analysts expect earnings of $7.2 per share on revenue of $9.7 billion. The company has guided first-quarter revenue between €8.2 billion and €8.9 billion, with a gross margin of 51% to 53%. ASML closed 2025 with full-year net sales of $37.94 billion, driven by AI-related capacity expansions. Options pricing suggests traders anticipate a potential 5% swing following the report. Geopolitical risks have intensified after US lawmakers introduced legislation that could restrict ASML's sales to Chinese chipmakers. China accounted for roughly 30% of ASML's 2025 revenue. JPMorgan maintains a Buy rating but estimates the proposed restrictions could reduce earnings per share by up to 10%.

Yahoo Finance
Apr 7th, 2026
US MATCH Act draft threatens ASML's 29% China revenue with new chip equipment export controls

ASML shares fell approximately 4% on Tuesday after a draft version of the MATCH Act emerged in the US House of Representatives. The bill aims to coordinate export controls on semiconductor manufacturing equipment among US allies, including the Netherlands, to prevent China from obtaining advanced chip production tools. Citi Research analysts warned the legislation could significantly impact ASML and may have unintended consequences. Restricting sales of immersion lithography tools to China would likely limit the country's production expansion capabilities, as China lacks domestic lithography production. ASML generated about 29% of its revenue from China in 2025, whilst US equipment makers sourced roughly 30% to 40% from China last year. Citi anticipates potential retaliation from Beijing through its rare earth minerals position.

Yahoo Finance
Apr 4th, 2026
ASML plans 1,700 job cuts, triggering 1,000-worker walkout at Veldhoven headquarters

ASML Holding plans to cut 1,700 jobs as part of a restructuring effort, prompting more than 1,000 employees to walk out at its Veldhoven headquarters. The action highlights tensions between management and staff over cost reductions and job security at the critical semiconductor equipment maker. The company, trading at $1,317.23 on Nasdaq, has delivered strong returns with shares up 13.2% year-to-date and 119.1% over the past year. ASML is managing the restructuring whilst handling substantial commitments, including a $7.97 billion order from SK Hynix through 2027 and preparing High NA EUV tools for commercial production. Investors are watching whether leadership can maintain operational stability and retain key engineering talent whilst implementing cost controls, particularly given ASML's central role in the global semiconductor supply chain.

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