Senior Software Test Engineer

About the role

Sigma Design has collaborated with a leading Electronics Manufacturing company seeking an experienced Senior Software Test Engineer to join their facility in Kirkland, WA. The company delivers commercial radar solutions for end users and integrators in Government and Defense, Critical Infrastructure Protection, Uncrewed Aircraft Systems (UAS), and Autonomous Vehicle markets globally. This position is contract-to-hire.

Responsibilities

• Design, execute, and maintain feature-level and end-to-end software test scenarios for complex products
• Analyze product requirements and architecture to define test strategies, coverage, and acceptance criteria
• Develop and maintain test plans, test cases, and test reports; manage defects through resolution
• Perform manual and exploratory testing to identify product risks, edge cases, and failure modes
• Build and maintain automated tests where they provide clear value, contributing to existing frameworks
• Collaborate with software, firmware, and product teams to improve testability and overall quality
• Support test environments, tools, and test execution across projects and releases
• Mentor junior engineers and promote strong testing practices and a quality-first mindset

Requirements

• 5+ years of experience in software testing, QA engineering, or test engineering roles
• Strong experience validating feature-level behavior and cross-component workflows
• Solid understanding of software testing principles, methodologies, and test design techniques
• Experience with test automation, including writing and maintaining automated tests (Python preferred)
• Experience working in environments with hardware and software dependencies
• Practical knowledge of Linux environments, Git workflows, and CI/CD concepts
• Understanding of software development practices, defect investigation, and root cause analysis
• ITAR compliance: Permanent resident of the United States (“U.S. person” as defined by ITAR)
• Ability to pass a post-offer background verification

Benefits

• Multiple options for medical and dental insurance, including plans with FSA and HSA
• 401(k) with up to 4% company match
• 15 days of accrued PTO and 9 company-paid holidays
• Quarterly bonus program
• Voluntary benefits: vision, long-term disability, and life insurance

Pay

The hiring range for this role is typically between $72 per hour and $85 per hour, with the full range extending to $98 per hour, based on experience, internal equity, and career progression.

Schedule

Hybrid schedule.