The Role
Develop and maintain manual, exploratory, and automated tests for complex software products with hardware and firmware dependencies. Define test strategies, coverage, acceptance criteria, test plans, and reports; investigate defects and collaborate with software, firmware, and product teams to improve quality. Support test environments and releases, manage defects through resolution, and mentor junior engineers.
Summary Generated by Built In
Senior Software Test Engineer
(Contract-to-hire)
(Contract-to-hire)
Sigma Design has collaborated with a leading Electronics Manufacturing company seeking an experienced Senior Software Test Engineer to join their facility in Kirkland, WA. This 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.
While on contract you are eligible for:
- Multiple options for medical insurance and dental insurance including some 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
- Hybrid Schedule
- 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
- This position will be Hybrid
The Senior Software Test Engineer is responsible for independently developing testing strategies for complex products, identifying risks across interconnected systems, and balancing manual exploratory testing with automation. Ideally, they have tested products with both hardware and software dependencies and can work closely with software and firmware engineers.
Essential Job Functions - 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
- 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
- Compliance (background check, ITAR, vaccine, etc.)
- ITAR - Permanent resident of the United States (“U.S. person” as defined by ITAR)
- Background - Pass a post-offer background verification.
Office: Standard office environment with normal office related conditions. Occasionally may be required to travel as required to other facilities, clients, or suppliers.
Skills Required
- 5+ years of experience in software testing, QA engineering, or test engineering roles
- Strong experience validating feature-level behavior and cross-component workflows
- Understanding of software testing principles, methodologies, and test design techniques
- Experience with test automation, including writing and maintaining automated tests
- Experience working 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
- Python experience
- Compliance with background check, ITAR, and vaccine requirements
- U.S. person status under ITAR, including permanent U.S. residency
- Passing a post-offer background verification
Am I A Good Fit?
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.
Success! Refresh the page to see how your skills align with this role.
The Company
What We Do
SIGMADESIGN is a product design and engineering firm headquartered in Camas, WA. We offer product development services from concept through production. SIGMADESIGN provides turnkey solutions for projects through solid engineering, broad experience, and focused execution. We're experts in IoT, Consumer Electronics, Recreational Products, and Aerospace & Defense. The firm was founded in 1994 to serve product design needs of the US Pacific Northwest. With multiple locations in the US and an office in Singapore, we serve a world-wide client base. Our expertise and services can take an idea from concept through production. We enjoy the opportunity to assist at any stage in the process. Services SIGMADESIGN provides services ranging from industrial design through manufacturing. These include: • Industrial Design • Systems Engineering • Mechanical Engineering • Electrical Engineering • Software/Firmware Engineering • Soft Goods Development • Rapid Prototyping • Machine Shop/Part Fabrication • Product Testing • Manufacturing • Logistics and Shipping
