{"id":3782044,"url":"https://alion.io/job/keysight-software-engineer-semiconductor-technology-c-net-2","title":"Software Engineer- Semiconductor Technology (C#/.NET)","company":{"id":53596,"name":"Keysight","domain":"keysight.com","url":"https://alion.io/company/keysight","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Jibe","truth_index":null},"role":"Hardware","role_family":"Hardware","seniority":"junior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Santa Rosa, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":127109,"max":224920,"currency":"USD","period":"year","gross":null,"usd_annual":224920},"salary_estimate":null,"experience_years_min":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"ASP.NET Core","optional":false},{"name":"C#","optional":false},{"name":"C++","optional":false},{"name":"CI/CD","optional":false},{"name":"Git","optional":false},{"name":"Java","optional":false},{"name":"Model Context Protocol","optional":false},{"name":"OpenShift","optional":false},{"name":"Sentry","optional":false},{"name":"SQL","optional":false},{"name":"Statistical Process Control","optional":false},{"name":"Docker","optional":true},{"name":"Jenkins","optional":true},{"name":"Kubernetes","optional":true},{"name":"MVVM","optional":true},{"name":"PowerShell","optional":true},{"name":"Windows","optional":true},{"name":"WPF","optional":true}],"status":"live","first_seen_at":"2026-11-04T23:40:00Z","employer_posted_date":"2026-11-06","last_verified_at":"2026-11-06T13:07:11Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"OverviewKeysight is a mission-critical design enablement partner for organizations solving the world’s most complex engineering challenges. With deep engineering expertise and leading design, emulation, and test solutions, our ~16,800 employees help customers in over 100 countries accelerate innovation across communications, automotive, energy, quantum, aerospace and defense, semiconductor, and artificial intelligence markets. Learn more about what we do.\nAt Keysight, people come together to explore new ideas, challenge what's possible, and advance the technologies defining the future. Here, you'll find opportunities to do your best work, take your career further, and thrive in an award-winningculture.Learn more about our benefits.\nResponsibilities\nOur team, part of Keysight Laboratories' High Frequency Technology Center (HFTC), is a software development group. We design and build custom software used across Keysight's Santa Rosa wafer fab, test floor and assembly lines for everything from wafer maps to electrical test orchestration and automation, data transformation, and extensions of our manufacturing execution systems (MES). The chips we make go into Keysight's own instruments.\nThis role is about software engineering: designing, building and improving software that others depend on. We work closely with partner teams like test engineering: they own measurements and product test plans, and we own the software they use to scale those plans to every product.\nMost of our work is in C#/.NET: desktop applications that keep running when the network or a server goes down, plus web applications and APIs in ASP.NET, backed by SQL Server. We employ code quality techniques including static analysis, code review, CI/CD, automate distribution through internal package feeds, and capture telemetry to streamline monitoring and diagnosis. Newer server-side services run in containers on OpenShift.\nWhat you'll do:\nBuild new applications from scratch for engineering groups, from first requirements to production, and help other groups build their own.\nDesign shared libraries, APIs, MCP servers and other tooling that developers and engineers across the organization build on.\nBuild data pipelines and ETLs that move and transform manufacturing data between databases, applications and commercial platforms.\nExtend and integrate with our manufacturing execution system (Critical Manufacturing), a growing part of our work.\nDevelop the software that runs our wafer test stations: device sampling, wafer location navigation, dynamic statistical device health assessment, and complex data forwarding.\nExtend core systems such as our wafer map platform and the framework our test engineers use to write test plans.\nBuild factory support software such as SPC systems, calculators and analytical tools.\nWork side by side with the engineers, operators and technicians who use our software, turning their needs into tools they rely on.\nKeep production software reliable and diagnosable, and improve existing codebases through better architecture, testing and modernization.\nWhat success looks like:\nFirst 90 days: you've shipped changes to at least two of our systems through code review, fixed a production issue that came in through Sentry, and written down how one part of a system works that only one person understood before. You can explain how a wafer moves from fab through test to assembly, and which of our systems touch it.\nFirst year: you've made major contributions to several projects across our systems, working alongside senior engineers on the larger ones, and engineers bring requests to you directly.\nQualifications\nThis role may be filled at multiple levels depending on experience and skill.\nBachelor's degree in Computer Science, Computer Engineering, Software Engineering or a related field, or equivalent experience.\n2-10+ years of professional software development in C#/.NET (preferred), or in Java or C++ with a willingness to work in C#.\nRelational SQL: you write non-trivial queries and can figure out why one is slow.\nExperience getting up to speed on a large existing codebase used by real users, and changing it safely.\nAutomated testing and a Git pull-request workflow with code review.\nMethodical debugging of production systems: you form hypotheses and test them with a debugger, logs and data.\nWorking directly with internal customers, and documenting as you go.\nDesired (no one has all of these; strong software skills come first):\nManufacturing, industrial or lab data systems; semiconductor experience (wafer maps, lots, yield) is a bonus.\nIntegrating software with equipment or other vendors' systems: device APIs, file and message interfaces, MES or ERP.\nDesigning frameworks or libraries used by other developers.\nWindows desktop development with WPF/MVVM.\nNET web applications and APIs.\nCI/CD (Jenkins), production monitoring (Sentry), and deployment with PowerShell or Chocolatey.\nContainers: Docker, OpenShift or Kubernetes.\nLocation: This role requires an in-person, hands-on engineer who can physically work with the manufacturing systems in Santa Rosa, CA.\nThis position requires access to certain goods, software, technology, or technical data subject to U.S. export control laws and regulations. Under these laws and regulations, U.S. persons (which includes U.S. citizens, U.S. nationals, lawful permanent residents, refugees, and asylees) working for Keysight can access export-controlled items without authorization from the U.S. government. For any individual who is not a U.S. person, Keysight may need authorization from the U.S. Department of State, U.S. Department of Commerce, or other appropriate federal agency before the individual can access export-controlled items. Candidates must be a U.S. citizen or lawful permanent resident of the U.S., or protected individual, having authorization from the U.S. government for export-controlled items under 8 U.S.C. 1324b(a)(3).\nCareers Privacy Statement ***Keysight is an Equal Opportunity Employer.***\nQualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability or any other protected categories under all applicable laws.\nThe level of role will be based on applicable experience, education and skills; Most offers will be between the minimum and the midpoint of the Salary Range listed below.\nSanta Rosa, CA MIN $127,109-MAX $224,920\nNote: For other locations, pay ranges will vary by region\nThis role is eligible for Keysight Results Bonus Program\nUS Employees may be eligible for the following benefits:\nMedical, dental and vision\nHealth Savings Account\nHealth Care and Dependent Care Flexible Spending Accounts\nLife, Accident, Disability insurance\nBusiness Travel Accident and Business Travel Health\n401(k) Plan\nFlexible Time Off, Paid Holidays\nPaid Family Leave\nDiscounts, Perks\nTuition Reimbursement\nAdoption Assistance\nESPP (Employee Stock Purchase Plan)\n#LI-MED1\nOur team, part of Keysight Laboratories' High Frequency Technology Center (HFTC), is a software development group. We design and build custom software used across Keysight's Santa Rosa wafer fab, test floor and assembly lines for everything from wafer maps to electrical test orchestration and automation, data transformation, and extensions of our manufacturing execution systems (MES). The chips we make go into Keysight's own instruments.\nThis role is about software engineering: designing, building and improving software that others depend on. We work closely with partner teams like test engineering: they own measurements and product test plans, and we own the software they use to scale those plans to every product.\nMost of our work is in C#/.NET: desktop applications that keep running when the network or a server goes down, plus web applications and APIs in ASP.NET, backed by SQL Server. We employ code quality techniques including static analysis, code review, CI/CD, automate distribution through internal package feeds, and capture telemetry to streamline monitoring and diagnosis. Newer server-side services run in containers on OpenShift.\nWhat you'll do:\nBuild new applications from scratch for engineering groups, from first requirements to production, and help other groups build their own.\nDesign shared libraries, APIs, MCP servers and other tooling that developers and engineers across the organization build on.\nBuild data pipelines and ETLs that move and transform manufacturing data between databases, applications and commercial platforms.\nExtend and integrate with our manufacturing execution system (Critical Manufacturing), a growing part of our work.\nDevelop the software that runs our wafer test stations: device sampling, wafer location navigation, dynamic statistical device health assessment, and complex data forwarding.\nExtend core systems such as our wafer map platform and the framework our test engineers use to write test plans.\nBuild factory support software such as SPC systems, calculators and analytical tools.\nWork side by side with the engineers, operators and technicians who use our software, turning their needs into tools they rely on.\nKeep production software reliable and diagnosable, and improve existing codebases through better architecture, testing and modernization.\nWhat success looks like:\nFirst 90 days: you've shipped changes to at least two of our systems through code review, fixed a production issue that came in through Sentry, and written down how one part of a system works that only one person understood before. You can explain how a wafer moves from fab through test to assembly, and which of our systems touch it.\n First year: you've made major contributions to several projects across our systems, working alongside senior engineers on the larger ones, and engineers bring requests to you directly.\nThis role may be filled at multiple levels depending on experience and skill.\nBachelor's degree in Computer Science, Computer Engineering, Software Engineering or a related field, or equivalent experience.\n2-10+ years of professional software development in C#/.NET (preferred), or in Java or C++ with a willingness to work in C#.\nRelational SQL: you write non-trivial queries and can figure out why one is slow.\nExperience getting up to speed on a large existing codebase used by real users, and changing it safely.\nAutomated testing and a Git pull-request workflow with code review.\nMethodical debugging of production systems: you form hypotheses and test them with a debugger, logs and data.\nWorking directly with internal customers, and documenting as you go.\nDesired (no one has all of these; strong software skills come first):\nManufacturing, industrial or lab data systems; semiconductor experience (wafer maps, lots, yield) is a bonus.\nIntegrating software with equipment or other vendors' systems: device APIs, file and message interfaces, MES or ERP.\nDesigning frameworks or libraries used by other developers.\nWindows desktop development with WPF/MVVM.\nNET web applications and APIs.\nCI/CD (Jenkins), production monitoring (Sentry), and deployment with PowerShell or Chocolatey.\nContainers: Docker, OpenShift or Kubernetes.\nLocation: This role requires an in-person, hands-on engineer who can physically work with the manufacturing systems in Santa Rosa, CA.\nThis position requires access to certain goods, software, technology, or technical data subject to U.S. export control laws and regulations. Under these laws and regulations, U.S. persons (which includes U.S. citizens, U.S. nationals, lawful permanent residents, refugees, and asylees) working for Keysight can access export-controlled items without authorization from the U.S. government. For any individual who is not a U.S. person, Keysight may need authorization from the U.S. Department of State, U.S. Department of Commerce, or other appropriate federal agency before the individual can access export-controlled items. 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