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Senior Software Development Engineer In Test Jobs in Arlington, WA

Fortive

Test Engineer Co-Op

Everett, WA · On-site

As a Test Engineer Co-Op with Fluke Electronics, you will help develop, implement, and support ... Troubleshoot hardware, software, and electrical communication systems used in test stations.

Tektronix

Test Engineer Co-Op

Everett, WA · On-site

$25 - $30/hr

As a Test Engineer Co-Op with Fluke Electronics, you will help develop, implement, and support ... Troubleshoot hardware, software, and electrical communication systems used in test stations.

Fortive

Global NPI Test Engineer

Everett, WA · On-site

Ensure test requirements are identified early in the product development process. * Drive Design ... About Fluke Fluke is leading the world in creating software, test tools and technology that will ...

Fortive

Global NPI Test Engineer

Everett, WA · On-site

Ensure test requirements are identified early in the product development process. * Drive Design ... Our forward-looking companies lead the way in software-powered workflow solutions, data-driven ...

Helion Energy

Senior Test Engineer

Everett, WA · On-site

$182K - $214K/yr

Bachelor's degree in electrical engineering, Mechatronics, or a related field * 5+ years of experience developing and supporting electrical or electronic test systems in R&D or production ...

Fluke

Global NPI Test Engineer

Everett, WA · On-site

$125 - $150/hr

Ensure test requirements are identified early in the product development process.Drive Design for ... About FlukeFluke is leading the world in creating software, test tools and technology that will ...

Tektronix

Global NPI Test Engineer

Everett, WA · On-site

Ensure test requirements are identified early in the product development process. Drive Design for ... About Fluke Fluke is leading the world in creating software, test tools and technology that will ...

Karman Space & Defense

Senior Test Engineer

Mukilteo, WA · On-site

$120K - $165K/yr

Karman Space & Defense is a leader in the rapid design, development, and production of critical ... or aerospace engineering. * Energetics experience. * Experience leading qualification test ...

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Senior Software Development Engineer In Test information

See Arlington, WA salary details

$24.9K

$139.1K

$181.1K

How much do senior software development engineer in test jobs pay per year?

As of Sep 8, 2026, the average yearly pay for senior software development engineer in test in Arlington, WA is $139,101.00, according to ZipRecruiter salary data. Most workers in this role earn between $122,400.00 and $159,000.00 per year, depending on experience, location, and employer.

What does a senior software development engineer in test do?

A Senior Software Development Engineer in Test (SDET) is responsible for designing, developing, and maintaining automated test frameworks and tools to ensure the quality and reliability of software products. They work closely with development and QA teams to identify test requirements, create robust test cases, and integrate automated tests into the CI/CD pipeline. In addition to coding and scripting, Senior SDETs mentor junior team members, analyze test results, and help troubleshoot complex issues to continuously improve software quality. Their expertise bridges the gap between development and testing, ensuring both speed and quality in software releases.

How does a senior software development engineer in test typically collaborate with development and product teams to ensure software quality?

As a Senior Software Development Engineer In Test (SDET), you will work closely with both development and product teams throughout the software development lifecycle. This includes participating in design and requirements discussions to identify potential test cases early, contributing to test automation strategies, and providing feedback on testability and quality risks. SDETs often pair with developers to review code, co-create test plans, and triage bugs together, ensuring that testing is fully integrated into the CI/CD pipeline. Effective communication and cross-team collaboration are essential for proactively identifying issues and maintaining high software quality standards.

What are the key skills and qualifications needed to thrive as a senior software development engineer in test, and why are they important?

To thrive as a Senior Software Development Engineer In Test, you need advanced programming skills, deep knowledge of software testing methodologies, and a bachelor's degree in computer science or a related field. Expertise with automation frameworks (such as Selenium, Cypress, or Appium), CI/CD tools, and scripting languages is typically required, along with relevant certifications like ISTQB. Strong analytical thinking, problem-solving, and effective communication are crucial soft skills for collaborating with cross-functional teams and driving quality initiatives. These capabilities ensure rigorous test coverage, faster release cycles, and high-quality software products.

What is the difference between Senior Software Development Engineer In Test vs Software Development Engineer In Test?

AspectSenior Software Development Engineer In TestSoftware Development Engineer In Test
ExperienceTypically 5+ years in testing and developmentEntry to mid-level, 1-3 years experience
ResponsibilitiesDesigns complex test frameworks, mentors juniors, leads testing initiativesDevelops test cases, automates tests, executes testing tasks
Skills & CertificationsAdvanced coding, automation, testing tools, leadership skillsProgramming, automation, testing tools
Work EnvironmentCollaborates with cross-functional teams, often in Agile settingsWorks closely with developers, focuses on automation and manual testing

In summary, a Senior Software Development Engineer In Test has more experience, leadership responsibilities, and strategic testing roles compared to a Software Development Engineer In Test, who primarily focuses on developing and executing tests.

What cities near Arlington, WA are hiring for Senior Software Development Engineer In Test jobs?

Cities near Arlington, WA with the most Senior Software Development Engineer In Test job openings:

Senior Software Development Engineer In Test jobs near you
Infographic showing various Senior Software Development Engineer In Test job openings in Arlington, WA as of August 2026, with employment types broken down into 1% As Needed, 80% Full Time, 16% Part Time, and 3% Contract. Highlights an 91% Physical, 3% Hybrid, and 6% Remote job distribution, with an average salary of $139,101 per year, or $66.9 per hour.

Development Engineer III

Karman Space & Defense

Mukilteo, WA • On-site

$110K - $140K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 27 days ago

Karman Space & Defense rating

8.3

Company rating: 8.3 out of 10

Based on 10 frontline employees who took The Breakroom Quiz

37th of 72 rated aerospace companies

Job description

Karman Space & Defense is a leader in the rapid design, development, and production of critical, next-generation system solutions that align with the U.S. Department of War and its allies’ core mission priorities, and meet the accelerating demand for access to space. Building on nearly 50 years of success, we deliver Payload & Protection Systems, Aero/Hydrodynamic Interstage Systems, and Propulsion & Launch Systems to more than 80 prime contractors supporting over 130 space and defense programs.

This role is part of our Hypersonics and Strategic Missile Defense business, which designs, develops, and delivers highly dependable missile systems for hypersonic and strategic missile defense missions. We provide integrated, mission-ready hardware that brings together multiple technologies into unified systems engineered to perform in demanding operational environments. Our tip-to-tail capabilities include payload protection and deployment systems, propulsion systems, aerodynamic interstage systems, separation systems, missile subsystems, shroud systems, launch systems, and payload integration solutions.

In this role, you lead critical testing and development activities that validate advanced mechanical solutions supporting aerospace and defense programs. Working within a multi‑disciplinary engineering team, you drive planning, execution, and documentation of development and qualification testing, contribute to product definition and proposal efforts, and help transition concepts into functional prototype and full‑scale systems. Your work strengthens program execution, supports customer needs, and advances innovative technologies across the entire development lifecycle.

Responsibilities

  • Leads planning and execution of testing required for mechanical system development.
  • Assists in meeting client goals by supporting project delivery within scope, schedule, and budget.
  • Leads test planning and execution, including test design, analysis, procedures, test plans, test reports, and data collection and reduction.
  • Supports business development and project performance activities to address customer needs.
  • Leads proposal efforts by collaborating with clients and internal engineering teams to support needs definition, presentations, and project reviews.
  • Mentors junior engineers and serves as a technical resource.

Required Qualifications

  • Bachelor’s or master’s degree in mechanical engineering or aerospace engineering, or equivalent relevant experience.
  • Typically 4–7 years of aerospace and/or defense experience.
  • Proven experience leading product development tests, including development testing and assisting in qualification testing.
  • Proficiency with data acquisition systems and instrumentation.
  • Strong understanding of multiple engineering technologies.
  • Solid understanding of geometric dimensioning and tolerancing (GD&T).
  • Knowledge of military and commercial specifications preferred.
  • A current U.S. Department of Defense (DoD) Secret security clearance or the ability to obtain and maintain one.

Preferred Qualifications

  • Solid understanding of SolidWorks.

Benefits

  • Medical, dental, and vision insurance
  • 401(k) with company match
  • Paid time off
  • Health Savings Account (HSA) with company contribution
  • Flexible Spending Accounts (FSA)
  • Company‑paid life and AD&D insurance
  • Short‑ and long‑term disability coverage
  • Tuition reimbursement

Karman Space and Defense is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, disability, genetic information, protected veteran status, or any other status protected by applicable law.

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