Software Engineer- Semiconductor Technology (C#/.NET)
$127,109 - $224,920 USD yearly
Build custom C#/.NET software, test station automation, and MES extensions across Keysight's Santa Rosa wafer fab.
Originally posted 4 November 2026 by the employer.
About the role
This role focuses on designing, building, and improving custom software used across Keysight's Santa Rosa wafer fab, test floor, and assembly lines. You will develop applications spanning wafer maps, electrical test orchestration and automation, data transformation, and extensions of manufacturing execution systems (MES).
What you'll do
- Build applications from scratch for engineering teams and design shared libraries, APIs, and tooling used across the organization.
- Build data pipelines and ETL processes to move and transform manufacturing data between databases, applications, and commercial platforms.
- Extend and integrate with the manufacturing execution system (Critical Manufacturing).
- Develop software that runs wafer test stations, including device sampling, wafer location navigation, dynamic statistical device health assessment, and data forwarding.
- Extend core platforms such as the wafer map system and the framework test engineers use to write test plans.
- Support factory operations by building SPC systems, calculators, and analytical tools, while maintaining production software reliability and diagnosability.
What you'll need
- Bachelor's degree in Computer Science, Computer Engineering, Software Engineering, or a related field, or equivalent experience.
- 2-10+ years of professional software development experience in C#/.NET, or in Java or C++ with a willingness to work in C#.
- Relational SQL proficiency, including writing non-trivial queries and diagnosing performance issues.
- Experience navigating and safely modifying a large existing codebase used in production.
- Experience with automated testing, Git pull-request workflows, and code review.
- Methodical production debugging experience using debuggers, logs, and data.
Nice to have
- Experience with manufacturing, industrial, or lab data systems, particularly semiconductor concepts like wafer maps, lots, and yield.
- Experience integrating software with equipment or external systems, such as device APIs, file and message interfaces, MES, or ERP.
- Experience with Windows desktop development using WPF/MVVM or ASP.NET web applications and APIs.
- Experience with CI/CD tools (Jenkins), production monitoring (Sentry), and deployment with PowerShell or Chocolatey.
- Experience with containers using Docker, OpenShift, or Kubernetes.
Skills: C#, .NET, SQL, wafer test, MES
More semiconductor jobs: Keysight Technologies jobs · Software engineer jobs
This role has been open 0 days — well below the 51-day median for Software Engineering Semiconductor roles.
Software Engineering Semiconductor · Manufacturing Equipment
|
Open roles in category
197
|
Median days open
51 d
|
Category median salary (all employers)
$146k
|
See the full market breakdown ▾Category comparison, skills in demand, and who else is hiring
| Metric | Keysight Technologies | All employers we track in this specialty (197 roles · 34 employers) |
|---|---|---|
| Open roles in this specialty | 10 | 197 |
| Open roles in the wider Software, Firmware & Systems family | 155 | 6454 · 156 employers |
| Median days open | 89 d | 51 d (+38 d vs this employer) |
| Median salary (USD postings) | — | $146k |
Skills observed across this category: C#, .NET, SQL, wafer test, MES
Who's hiring in this category
- KLA Corporation · 35 open roles · median 80 d
- Applied Materials · 31 open roles · median 41 d
- ASM International · 20 open roles · median 19 d
- Lam Research · 20 open roles · median 42 d
- Teradyne · 10 open roles · median 43 d
- Fab2 · 8 open roles · median 62 d
How we counted: 197 open Software Engineering Semiconductor (Manufacturing Equipment) roles from 34 employers tracked in the SemiconductorJobs index, counted 5 Nov 2026. Specialty figures count only roles carrying this exact specialty label, so an employer's related work in neighbouring specialties is not included there — it is counted in the wider Software, Firmware & Systems family row. Figures refresh nightly.