Senior C# Software Engineer Optical Column Software

ASML; Veldhoven; On-site; EUR 70,000 - 90,000; Full time

Job summary

ASML in Veldhoven seeks a skilled C# Software Engineer to design, implement and maintain software for optical metrology systems in a hardware-enabled environment. You will own features end-to-end, align with stakeholders, and uphold high-quality software through disciplined testing and clear documentation.

Requirements include a Bachelor’s or Master’s in a related field, 4+ years in C#, and strong English communication. Experience with TDD and collaboration in cross-functional teams is essential.

Qualifications

• 4+ years of experience in C# in a hardware-enabled environment.
• Experience designing, implementing and maintaining software driving optical metrology systems.
• Hands-on practice with TDD and disciplined testing throughout the development cycle.

Responsibilities

• Take full end-to-end ownership of feature and story-based software development, from refinement through delivery to maintenance.
• Collaboratively align specifications with stakeholders in function teams and software platform teams.
• Safeguard software quality and product quality through robust engineering practices and code reviews.
• Realize high-quality software through disciplined design, thorough testing and clear, maintainable documentation.
• Act as a buddy in pair-programming sessions to elevate code quality and learning.
• Contribute to continuous improvement initiatives to enhance the software development process.
• Share knowledge with colleagues across D&E and customer-facing sectors to ensure alignment.

Skills

C#

Hardware experience

Test-Driven Development

Communication

Ownership

Education

Bachelor's or Master's in Computer Science or related field

Job description

Introduction to the job

Looking for a new opportunity to sharpen your Software Engineer skills in a challenging and vibrant environment? We are looking for a skilled C# Software Engineer, able to look beyond the borders of software engineering with an interest in physics, opto mechanics and more. We are Optical Column Software within the Process Window Detection Cluster and responsible for developing software on the Optical Column of the Yieldstar. Coming years there are many challenging improvements planned where we need you for to make them happen!

Role and responsibilities

At Yieldstart Optical Column Software, you’ll join the group as a C# Software Engineer. You’ll be responsible for designing, implementing and maintaining the software that drives the performance of our optical metrology systems. Our systems are critical to our customer’ manufacturing processes and are integrated into fab-wide MES environments.

Key Responsibilities

• Take full end-to-end ownership of feature and story-based software development, from refinement through delivery to maintenance.
• Collaboratively align specifications with stakeholders in the function teams and the software platform teams to ensure shared understanding and technical coherence.
• Safeguard both software quality and overall product quality by applying robust engineering practices and reviewing team contributions.
• Realize high-quality software through disciplined design, thorough testing and clear, maintainable documentation.
• Act as a buddy in pair-programming sessions, helping elevate code quality and strengthening team learning.
• Contribute to continuous improvement initiatives that enhance the software development process for the broader department.
• Share knowledge proactively with colleagues across D&E and customer-facing sectors such as Customer Support to ensure smooth operational alignment.

Education and experience

• Bachelor’s or Master’s degree in Computer Science, Software Engineering, Embedded Systems, Mathematics, Physics, or a related technical field.
• 4+ years experience in C#
• Experience with Software Engineering in a hardware environment
• Hands-on practice with Test-Driven Development (TDD), consistently applying disciplined testing habits throughout the development cycle.

Skills

ASML is a highly dynamic environment, which requires you to be a good communicator, team player, to take initiative and to be result oriented. You are a critical thinker and pay attention to every detail of your work and you leave no room for errors. You express creative and innovative thinking and get energy from pioneering new ground.

For this position specifically, we also require the following skills:

• Take initiative, show ownership and be decisive.
• A strong communicative personality with a pragmatic attitude.
• Proficient in English language.
• Influencing without authority.
• Perseverant.
• Coaching and guiding others.

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.

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