Sr. Software Test Engineer
MKS Instruments, Inc.24 hours ago
Milpitas, CA, USASenior
Base Salary
$110k - $155k/yr
Responsibilities
- Develop, maintain, and execute manual and automated test plans and test cases for embedded firmware at feature, integration, and system levels.
- Validate graphical user interfaces for usability, functionality, responsiveness, and compatibility with target hardware and operating systems.
- Perform performance, compatibility, regression, functional, hardware-integration, and system-level testing.
- Identify, document, trace, reproduce, and troubleshoot defects, including field-reported and customer-facing bugs.
- Use automated testing tools to improve testing speed and coverage.
- Maintain traceability matrices linking requirements to test cases and results.
- Identify failure modes early and collaborate with developers, software engineers, electrical engineers, system engineers, and photonics specialists to resolve issues.
Requirements
- Bachelor’s degree in Software Engineering, Computer Engineering, Electrical Engineering, or equivalent experience.
- At least 5 years of related software QA experience with embedded systems and GUIs.
- Experience working with precision equipment, preferably in the photonics industry.
- Proficiency programming in C, C#, and Python.
- Experience with Unity, Pytest, GTest, NUnit, or xUnit testing frameworks.
- Familiarity with CI/CD tools, version control, and bug-tracking systems such as JIRA.
- Experience with I2C, SPI, RS-232, RS-485, Ethernet, and USB interfaces.
- Experience using test equipment such as digital multimeters, power supplies, and oscilloscopes.
- Desired exposure to DevSecOps and cybersecurity principles.
- Preferred experience with Azure/ThreadX or FreeRTOS real-time operating systems and/or Linux.
- Preferred ability to read electronic schematic diagrams and component datasheets.
- Experience using LLMs or other AI tools for test-case generation, test-data creation, or defect analysis is a plus.
- Strong communication, documentation, and organizational skills, with experience working on distributed teams.
Benefits
- Annual salary range of $110,000.00–$155,000.00, with eligibility for a discretionary annual bonus.
- Medical, dental, and vision insurance.
- 401(k) with company match, life insurance, and disability insurance.
- 12 paid holidays, sick time, and 15 paid vacation days.
- Six weeks of fully paid parental leave, adoption assistance, and tuition reimbursement.
- Work is performed in a lab or office setting, with prolonged sitting; MKS generally hires candidates residing in states where it is registered to do business.
About MKS Instruments, Inc.
MKS Instruments designs and manufactures instruments, subsystems, process control solutions, lasers, and specialty chemicals used in semiconductor fabrication, electronics packaging, and industrial production. It sells capital equipment and consumables, along with software and services, to device makers and OEMs seeking to control pressure, flow, power, and contamination in advanced manufacturing. Founded in 1961 and headquartered in Andover, Massachusetts, MKS is a public company trading on NASDAQ (MKSI).