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Senior Software Engineer In Test Jobs in Renton, WA

Navtech, Inc.

Sr ETL SDET

Seattle, WA · On-site

$57 - $73.50/hr

Job Title: Sr SDET Location: Seattle, WA & Vancouver, Canada - Hybrid - Onsite Duration: 12+ Months Contract. Exp: 12+ Years A Passport number is mandatory at the time of submission for H1B/EAD ...

DevSelect

Front End SDET

Seattle, WA · On-site

$57 - $73.50/hr

Seattle, WA Openings: 1 Type: Long-term Contract Summary The Client Tools and Web Engineering team is seeking a Senior Software Development Engineer in Test to work on new feature Test Automation ...

DevSelect

Cloud SDET

Seattle, WA · On-site

$68.25 - $88.75/hr

Seattle, WA Openings: 1 Type: Long-term Contract Summary The Client Platform Engineering team is seeking a Senior Software Development Engineer in Test to work on new feature automation with a large ...

Palnar

Sr. Java SDET Engineer@ Seattle, WA

Seattle, WA · On-site

Job Role: Sr. Java SDET Engineer Location: Seattle, WA Duration: Long Term Contract Required Skills, * Strong proficiency in Java development. * Hands-on experience with test automation frameworks ...

krg technology inc

SDET

Redmond, WA · On-site

$56 - $72.25/hr

NET, SQL as SDET. - GOOD EXPERIENCE IN Dev/Test DRIVEN DEVELOPMENT AND AGILE PROJECT EXPERIENCE. - Write Solid code using development methodologies Work in a collaborative, team environment ...

Avani Technology Solutions, Inc.

SDET

Seattle, WA · On-site

$57 - $73.75/hr

Only W2 Software Development Engineer in Test Seattle, WA 98101 12 Months Experience:2-5 years 1 // Experience automating test cases using an object-oriented coding language (C, C++, Python, C#, Java ...

Stoke Space

Software Developer Engineer in Test

Kent, WA

$97K - $145K/yr

We're seeking a Software Development Engineer in Test to evolve our flagship software platform, Boltline, which enables teams to build and validate advanced hardware with complete traceability. As a ...

Futran Tech Solutions Pvt. Ltd.

SDET

Seattle, WA · On-site +1

$57 - $73.50/hr

SDET Location - Seattle, WA - Remote Contract About the Role: We are seeking a highly skilled SDET to join our Master Data Management (MDM) team called PLIM. The ideal candidate will have strong ...

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All JobsSoftware Engineer In Test JobsSenior Software Engineer In Test JobsSenior Software Engineer In Test Jobs in Renton, WA

Senior Software Engineer In Test information

See Renton, WA salary details

$25.3K

$141.2K

$183.9K

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

As of Jul 14, 2026, the average yearly pay for senior software engineer in test in Renton, WA is $141,234.00, according to ZipRecruiter salary data. Most workers in this role earn between $124,300.00 and $161,400.00 per year, depending on experience, location, and employer.

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

AspectSenior Software Engineer In TestSoftware Development Engineer in Test
CredentialsBachelor's in CS or related field, experience in testing and automationBachelor's in CS or related field, strong coding skills, experience in testing
Work EnvironmentDesigning test strategies, automation frameworks, collaborating with development teamsDeveloping test tools, writing automated tests, integrating testing into CI/CD pipelines
Industry UsageCommon in tech companies, especially in QA and testing teamsWidely used in software development companies focusing on automation

The main difference is that Senior Software Engineer In Test often focuses on testing strategy and automation leadership, while Software Development Engineer in Test emphasizes developing testing tools and automation code. Both roles require strong coding skills and testing experience, but their focus areas differ slightly within the testing lifecycle.

What are some typical challenges a Senior Software Engineer in Test faces when designing automated testing frameworks?

Senior Software Engineers in Test often encounter challenges such as integrating automated tests with complex, evolving codebases and ensuring tests remain reliable as features change. Balancing thorough test coverage with execution speed, especially in continuous integration environments, is another common concern. Additionally, collaborating with both development and QA teams to align on testing strategies and maintaining documentation for test frameworks are key responsibilities that require strong communication and adaptability.

What are Senior Software Engineers in Test?

Senior Software Engineers in Test are experienced professionals who design, develop, and implement automated testing frameworks and tools to ensure the quality and reliability of software products. They work closely with development and QA teams to identify testing needs, create robust test plans, and write automated scripts that validate software functionality. In addition to hands-on coding, they often mentor junior engineers, drive process improvements, and contribute to the overall testing strategy of the organization.

What are the key skills and qualifications needed to thrive as a Senior Software Engineer in Test, and why are they important?

To thrive as a Senior Software Engineer in Test, you need a deep understanding of software development, test automation frameworks, and a background in computer science or a related field. Mastery of tools like Selenium, Jenkins, JUnit, and experience with CI/CD systems, as well as relevant certifications such as ISTQB, are typically required. Strong analytical thinking, problem-solving abilities, and effective communication skills set top candidates apart in this role. These skills are crucial for ensuring robust, scalable, and reliable software delivery in complex technical environments.
What are popular job titles related to Senior Software Engineer In Test jobs in Renton, WA? For Senior Software Engineer In Test jobs in Renton, WA, the most frequently searched job titles are:
What job categories do people searching Senior Software Engineer In Test jobs in Renton, WA look for? The top searched job categories for Senior Software Engineer In Test jobs in Renton, WA are:
What cities near Renton, WA are hiring for Senior Software Engineer In Test jobs? Cities near Renton, WA with the most Senior Software Engineer In Test job openings:
Senior Software Engineer In Test jobs near you
Senior Software Engineer, Design in Test (SDET)

Senior Software Engineer, Design in Test (SDET)

BlackSky

Seattle, WA • On-site

$125K - $163K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 8 days ago

Job description

Senior Software Test Engineer
About Us:
BlackSky is a real-time intelligence company. We own and operate the world's most advanced space-based intelligence platform and provide customers satellite imagery, automated analytics and high-frequency monitoring of strategic locations, economic assets and events from around the globe. BlackSky is trusted by the most demanding allied military and intelligence organizations and commercial companies to deliver foresight into critical matters that affect national security and the economy. BlackSky's data enables governments and businesses to see, understand and anticipate change as it happens, giving them the ultimate strategic advantage so they can act quickly. Our global team works with cutting-edge technology to make a difference around the world and prides itself on being people-first, customer-focused and fun.
The Software Development Engineer in Test (SDET) is responsible for designing and implementing automated test frameworks, tools, and simulated environments that ensure the reliability and quality of our enterprise software systems. This role is development-focused and centers on building test harnesses, emulating third-party systems and network conditions, and creating robust automation infrastructure that enables comprehensive in-house validation. The SDET develops reusable test code, service/API simulators, and scalable Python-based frameworks that integrate into CI/CD pipelines to deliver consistent and repeatable coverage across complex application workflows. In addition to building automation systems, they analyze system behavior, investigate failures, collaborate closely with developers, and validate fixes to drive overall product stability and release confidence.
Because this role frequently works with physical lab environments, shared test equipment, and cross-team collaboration, the engineer will be expected to work onsite in both our Seattle and Tukwila offices in a hybrid capacity. Typical expectations are approximately two days per week in the office, with flexibility to adjust based on project needs, lab access requirements, or collaborative testing efforts. This position reports to the Senior Manager, Test and is responsible for all software test activities within the company, providing high visibility and significant influence on test strategy, automation direction, and product quality.
Responsibilities:
  • Design, develop, and maintain automated test frameworks and tools using Python, enabling scalable and reliable testing across services, APIs, and UI workflows.
  • Build Python or Go based simulators, mocks, and emulators to replicate third-party environments, network behavior, and integration scenarios for in-house testing.
  • Develop, maintain, and execute automated API test suites using Python Requests, custom harnesses, and Postman/Newman when appropriate.
  • Build and maintain automated UI test suites using Python Playwright, with a focus on reusable components, selectors, and page-object patterns.
  • Monitor nightly automated test runs, analyze failures, and provide actionable insights through integrations with Jira/X-Ray, Slack, and CI/CD pipelines.
  • Troubleshoot and diagnose issues across APIs, backend services, and UI workflows, collaborating with developers to isolate root causes and verify fixes.
  • Perform targeted manual testing for new feature development, complex regression scenarios, and defect reproduction where automation is not yet feasible.
  • Validate functional behavior, edge cases, and system workflows across distributed application components.
  • Document test frameworks, automation patterns, test cases, expected outcomes, and reproduction steps for defects.
  • Support and improve internal Python-based test applications, tools, and services used in daily verification workflows.
  • Ensure adequate test coverage for new features, releases, and high-risk areas.
  • Contribute to continuous improvement of automation tooling, coding standards, and test strategy.
  • Assist in ensuring readiness of builds for deployment and release.
  • Other job-related duties as assigned.

Required Qualifications:
  • Minimum of years of six (6) years of experience as a Software Test Engineer, Automation Engineer, or SDET, with significant hands-on software development responsibilities.
  • Bachelor's degree in relevant field of study (or equivalent additional experience of four years).
  • Strong proficiency in Python, including writing reusable modules, building automation frameworks, and creating test harnesses or tools.
  • Experience developing automated API tests using Python Requests or equivalent frameworks; experience with Postman/Newman preferred.
  • Experience designing and maintaining automated UI tests (Python Playwright preferred), with emphasis on code structure and maintainability.
  • Experience building Python-based utilities, simulators, mocks, or environment emulators to support complex test scenarios.
  • Familiarity with reporting test results and integrating automation with Jira/XRay, Slack, or similar tools.
  • Strong ability to analyze automated test results, identify root causes across services and layers, and validate fixes in collaboration with developers.
  • Working knowledge of CI-based automated test pipelines, nightly execution workflows, and test orchestration.
  • Understanding of distributed systems, API-driven architectures, and service interactions.
  • Strong troubleshooting and debugging skills across application layers (API, backend services, UI).
  • Ability to document test plans, automation approaches, and defect reports with clarity and precision.
  • Due to program requirements, this position requires US-born citizenship.

Preferred Qualifications:
  • Experience with RabbitMQ and Kafka in event-driven or message-based architectures.
  • Experience coding in Go.
  • Experience with secure, onprem, or airgapped deployment environments.
  • Experience with performance and load testing.
  • Defense, aerospace, or government program background.
  • Geospatial or remote sensing system experience.
  • Experience writing integration documentation, runbooks, or system validation procedures.
  • Master's degree in a relevant field of study.

Life at BlackSky for full-time US benefits eligible employees includes:
  • Medical, dental, vision, disability, group term life and AD&D, voluntary life and AD&D insurance
    • BlackSky pays 100% of employee-only premiums for medical, dental and vision and contributes $100/month for out-of-pocket expenses!
  • 15 days of PTO, 11 Company holidays, four Floating Holidays (pro-rated based on hire date), one day of paid volunteerism leave per year, parental leave and more
  • 401(k) pre-tax and Roth deferral options with employer match
  • Flexible Spending Accounts
  • Employee Stock Purchase Program
  • Employee Assistance and Travel Assistance Programs
  • Employer matching donations
  • Professional development
  • Mac or PC? Your choice!
  • Awesome swag

The anticipated salary range for candidates in Seattle, WA is $135,000-$155,000 per year. The final compensation package offered to a successful candidate will be dependent on specific background and education. BlackSky is a multi-state employer and this pay scale may not reflect salary ranges in other states or locations outside of Seattle, WA.
BlackSky is committed to hiring and retaining a diverse workforce. We are proud to be an Equal Opportunity/Affirmative Action Employer All Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, national origin, sexual orientation, gender identity, disability, protected veteran status or any other characteristic protected by law.
To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. #LI-Hybrid
EEO/AAP/ Pay Transparency Statements:
https://www.dol.gov/ofccp/regs/compliance/posters/pdf/eeopost.pdf
https://www.dol.gov/ofccp/regs/compliance/posters/pdf/OFCCP_EEO_Supplement_Final_JRF_QA_508c.pdf
BlackSky logo

About BlackSky

Sourced by ZipRecruiter

Industry

Guided missile and space vehicle manufacturing

Company size

11 - 50 Employees

Headquarters location

Herndon, VA, US

Year founded

2013

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