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Senior Software Development Engineer In Test Jobs in Fairfax, VA

Software Development Engineer (SDET)

Merrifield, VA ยท On-site

$49.75 - $64.25/hr

Senior Software Development Engineer (SDET) Location: Hybrid Work Model Reporting to Vienna, VA, Pensacola, FL, San Diego, CA Pay Rate: Open to Both C2C and W2 options Position Type: Multiyear ...

Software Development Engineer (SDET)

Merrifield, VA ยท On-site

$49.75 - $64.25/hr

Senior Software Development Engineer (SDET) Location: Hybrid Work Model Reporting to Vienna, VA, Pensacola, FL, San Diego, CA Pay Rate: Open to Both C2C and W2 options Position Type: Multiyear ...

NAVA Software solutions is looking for a SDET Engineer Details: SDET Engineer Location : Merrifield, VA(Hybrid) - Weekly once onsite Duration: 12 Months Top 3 Required Skills: * Hands-on development ...

SDET Developer

Silver Spring, MD ยท On-site

$51.75 - $66.75/hr

Software Development Engineer in Test (SDET) is to develop and execute software test plans in order to identify software problems and their causes. Strong java development skills JavaScript ...

SDET

Mclean, VA ยท On-site

$50.50 - $65.25/hr

Job Title: SDET Location: Onsite in McLean, VA Responsibilities โ€ข Design, develop, and maintain automation frameworks using Playwright, Selenium, Cucumber, Java, and TypeScript โ€ข Execute end-to ...

Showing results 21-40

Senior Software Development Engineer In Test information

See Fairfax, VA salary details

$23K

$128.3K

$167.1K

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

As of Aug 31, 2026, the average yearly pay for senior software development engineer in test in Fairfax, VA is $128,344.00, according to ZipRecruiter salary data. Most workers in this role earn between $112,900.00 and $146,700.00 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 are the most commonly searched types of Software Development Engineer In Test jobs in Fairfax, VA?

The most popular types of Software Development Engineer In Test jobs in Fairfax, VA are:

What are popular job titles related to Senior Software Development Engineer In Test jobs in Fairfax, VA?

For Senior Software Development Engineer In Test jobs in Fairfax, VA, the most frequently searched job titles are:

What job categories do people searching Senior Software Development Engineer In Test jobs in Fairfax, VA look for?

The top searched job categories for Senior Software Development Engineer In Test jobs in Fairfax, VA are:

What cities near Fairfax, VA are hiring for Senior Software Development Engineer In Test jobs?

Cities near Fairfax, VA with the most Senior Software Development Engineer In Test job openings:

Infographic showing various Senior Software Development Engineer In Test job openings in Fairfax, VA as of August 2026, with employment types broken down into 1% As Needed, 82% Full Time, 14% Part Time, and 3% Contract. Highlights an 90% Physical, 3% Hybrid, and 7% Remote job distribution, with an average salary of $128,344 per year, or $61.7 per hour.

Software Development Engineer (SDET)

System One

Merrifield, VA โ€ข On-site

$49.75 - $64.25/hr

Contractor

Medical, Dental, Vision, Life, Retirement

Re-posted 24 days ago


Job description

Job Title: Senior Software Development Engineer (SDET) Location: Hybrid Work Model Reporting to Vienna, VA, Pensacola, FL, San Diego, CA Pay Rate: Open to Both C2C and W2 options Position Type: Multiyear Contract

Responsibilities

  • Work with engineers to troubleshoot and remediate automation issues in testing and deploying environments
  • Work alongside developers as well as the business stakeholders and strive to automate the acceptance criteria
  • Understand, and implement agile development methodologies while working with teams using the Sprint/Scrum methodology of agile
  • Understand project documents, customer demands, and product objectives to create and execute test cases
  • Test complex API, web and mobile based applications that reference database back-end systems
  • Support non-functional requirements such as, performance testing
  • Set up, maintain, and perform test automation frameworks on multiple application platforms, such as Mobile, Desktop, and Web, and building test scenarios and acceptance tests
  • Participate in all agile ceremonies (standups, planning, backlog refinement, reviews, etc.) ensuring QA and testing is continuously represented and effectively incorporated into all aspects of the project
  • Own end-to-end test strategy, analyze requirements, build test plan, design test cases and implement test automation for applications of moderate to high complexity
  • Manage the final quality on production release
  • Develop, execute, and maintain automation test scripts to meet software release deliverables, project testing requirements and other quality considerations
  • Develop smoke, functional, regression, and integration test suites for UI, API Services, and databases
  • Develop and execute manual test cases to detect issues that cannot be detected through automated means (when needed)
  • Design customer centric automation test processes for all existing and new product development
  • Apply a strong understanding of software testing/delivery to build and maintain automated test harnesses and test suites using scripting languages and industry tools
  • Ability to advocate for Improvements in automation engineering efforts to the executive management team

Requirements

  • At least 5 years overall SDET and/or development hands on experience
  • At least 2 years of mobile apps test automation experience in Android and/or iOS, Web, API
  • At least 4 years of professional experience in software test automation, including creation and deployment of frameworks and design and maintenance of test automation
  • At least 2 years of API Automation Testing
  • Experience with agile development methodology
  • Experience with Cl/CD pipelines using tools such as GitHub, Jenkins, JUnit, Selenium, Cucumber, etc.
  • Experience with Test Driven Development (TDD), BDD Behavior Driven Development, and Agile (XP)
  • Experience with Test processes, open-source test frameworks, test design strategies, writing test cases, and automating tests in Java with frameworks like JUnit/TestNG, Selenium, JMeter and Appium
  • Experience working with a ticketing system such as Service Now or Jira
  • Hands on experience with any cloud technology platforms, preferably Microsoft Azure
  • Must have hands on experience in Selenium Scripting, and SQL querying
  • Must have hands on experience utilizing cloud hosted testing platforms such as Perfecto
  • Proficient in debugging issues
  • Proficient in Java
  • Proficient in writing functional automation (UI/API)
  • Solid foundation in data structures, algorithms, design patterns and strong analytical and problem-solving skills
  • Working knowledge of Pull requests, code reviews, etc.

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

#M1 #LI-CB3 Ref: #851-Rockville-S1


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About System One

Sourced by ZipRecruiter

System One helps employers get work done more efficiently and economically without compromising quality. Over our 35+ year history, we've helped connect thousands of talented people with innovative companies. The excitement of a perfect fit motivates us every single day.

Industry

Business consulting services and recruiting and staffing services

Company size

5,001 - 10,000 Employees

Headquarters location

Pittsburgh, PA, US