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Senior Software Development Engineer In Test Jobs in Arlington, WA

Karman Space & Defense

Development Engineer I

Mukilteo, WA · On-site

$85K - $110K/yr

SUMMARY The Development Engineer's role is to develop, test, and deploy aerospace and defense ... Assists in test planning and execution: test design and analysis; writing procedures, test plans ...

Garuda Ventures

Senior Software Engineer

Everett, WA · On-site

$157.60 - $197/hr

Design and implement software services in Golang and Python to automate the provisioning and ... Software Engineering: 8+ years of professional development experience, with a focus on backend ...

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Helion

Senior Software Engineer, Data Platform

Everett, WA · On-site

$135K - $178K/yr

Helion is a fusion power company based in Everett, WA, focused on building the world's first fusion power plant. They are seeking a Senior Software Engineer for their Data Platform to design, develop ...

Helion

Senior Software Engineer, Data Platform

Everett, WA · On-site

$135K - $178K/yr

Helion is a fusion power company based in Everett, WA, on a mission to build the world's first fusion power plant. The Senior Software Engineer, Data Platform will design, develop, and operate a ...

Helion

Senior Software Engineer, Data Platform

Everett, WA · On-site

$135K - $178K/yr

Helion is a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant. As a Senior Software Engineer for the Data Platform, you will design, develop ...

Vizio

(USA) Senior, Software Engineer

Everett, WA · On-site

$108K - $216K/yr

... in the overall shared codebase. Stays up-to-date with current development tools, processes, and ... Option 2: 5 years' experience in software engineering or related area. Preferred Qualifications.

Snohomish PUD

Applications Dev Eng I / II

Everett, WA · Hybrid

$117K - $146K/yr

Applications Development Engineer I or Applications Development Engineer II. Preferred Qualifications * 0-3 years of experience in software development, data, or technical support * Foundational ...

Pennant Solutions Group

Sr Aerospace Engineer

Mukilteo, WA · On-site

$175K - $190K/yr

... design, development, and validation of aerospace systems. This role is responsible for leading ... This individual plays a key role in test planning, technical documentation, and solving complex ...

Fortive

Service Test Engineer

Everett, WA

... development, and execution of the assembly, installation, testing, operation, maintenance, and ... Our forward-looking companies lead the way in software-powered workflow solutions, data-driven ...

PACCAR

ECU Test Engineer

Mount Vernon, WA · On-site

Job Summary The Hardware-in-the-Loop (HIL) Test Engineer will be responsible for validating PACCAR Electronics-developed ECU software through HIL testing. This role partners closely with product ...

PACCAR

ECU Test Engineer

Mount Vernon, WA · On-site

Job Summary The Hardware-in-the-Loop (HIL) Test Engineer will be responsible for validating PACCAR Electronics-developed ECU software through HIL testing. This role partners closely with product ...

PACCAR

ECU Test Engineer

Mount Vernon, WA · On-site

Job Summary The Hardware-in-the-Loop (HIL) Test Engineer will be responsible for validating PACCAR Electronics-developed ECU software through HIL testing. This role partners closely with product ...

MAGNIX USA INC

Product Development Engineer

Everett, WA · On-site

$145K - $190K/yr

Based in the beautiful Pacific Northwest, magniX builds solutions for the electric age, applying ... and software to mission-critical applications across data centers, energy storage, defense ...

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All JobsSoftware Development Engineer In Test JobsSenior Software Development Engineer In Test JobsSenior Software Development Engineer In Test Jobs in Arlington, WA

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 Aug 7, 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.

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 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 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 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.
What are popular job titles related to Senior Software Development Engineer In Test jobs in Arlington, WA? For Senior Software Development Engineer In Test jobs in Arlington, WA, the most frequently searched job titles are:
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, 81% Full Time, 15% Part Time, and 3% Contract. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $139,101 per year, or $66.9 per hour.

Development Engineer I

Karman Space & Defense

Mukilteo, WA • On-site

$85K - $110K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 5 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

36th of 72 rated aerospace companies

Job description

SUMMARY

The Development Engineer’s role is to develop, test, and deploy aerospace and defense mechanical products and systems as a member of a multi-disciplinary team. The primary focus of this position is the development, design verification testing, and demonstration of advanced technologies in support of military and aerospace programs. The Development Engineer assists in all phases of a program including conceptual level design and analysis, proof-of-concept, prototype hardware design, fabrication, system testing, and full-scale system development.

ABOUT US

Karman Space & Defense provides concept-to-production solutions for mission-critical systems on spacecraft, launch vehicles, missiles, hypersonics, and integrated defense systems. We believe that solving the industry’s most complex and mission-critical challenges requires relentless determination and a willingness to push the boundaries of possibility. Karman Space & Defense brings to bear unparalleled production capabilities, unmatched engineering expertise, and unflinching analysis to render the impossible, possible.

COMPENSATION & BENEFITS

  • Medical, Dental, Vision
  • Company Paid Life Insurance
  • 401(k) Retirement Savings Plan
  • Paid Time Off (PTO)
  • Paid Holidays
  • Tuition Reimbursement*


WHAT YOU WILL DO


  • Supports the engineering team in planning and execution of projects requiring mechanical system development.
  • Assists in the completion of client goals on time, within budget and ensuring products conform to the highest standards of excellence in terms of accuracy, completeness, and presentation
  • Assists in test planning and execution: test design and analysis; writing procedures, test plans, and test reports; data collection and reduction
  • Supports business development and project performance efforts to meet customer needs
  • Effectively interacts with technical staff for proposal development and project performance
  • Passion for the aerospace industry and strong desire to work in a fast-paced, hands-on environment

WHAT WE ARE LOOKING FOR

  • B.S. or M.S. Degree in Mechanical or Aerospace Engineering, or equivalent in relevant experience and registration
  • Typically possesses 0-3 years aerospace and/or defense experience
  • Solid understanding of engineering fundamentals
  • Basic understanding of data acquisition systems and instrumentation
  • Basic understanding of SolidWorks and Geometric Dimensioning and Tolerancing
  • Knowledge of military and commercial specifications preferred
  • Must be a U.S. Citizen, and hold or be able to obtain a DoD SECRET clearance


EQUAL OPPORTUNITY EMPLOYER

Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities. The contractor will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor’s legal duty to furnish information.

Karman is committed to equal employment opportunity. We will not discriminate against employees or applicants for employment on any legally recognized basis (“protected class”) including, but not limited to race; color; religion; genetic information; national origin; sex; pregnancy, childbirth, or related medical conditions; age; disability; citizenship status; uniform servicemember status; or any other protected class under federal, state, or local law. Our management is dedicated to ensuring the fulfillment of this policy with respect to hiring, placement, promotion, transfer, demotion, layoff, termination, recruitment advertising, pay, and other forms of compensation, training, and general treatment during employment.

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