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Sr Software Development Engineer In Test information

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

AspectSr Software Development Engineer In TestSoftware Development Engineer In Test
Required CredentialsBachelor's/Master's in CS or related, experience in automation testingBachelor's in CS or related, focus on automation skills
Work EnvironmentDesigns and develops complex test frameworks, leads testing initiativesDevelops and maintains test scripts, executes testing
Employer & Industry UsageUsed in tech companies, especially in QA and testing teamsCommon in software development companies, focusing on testing automation

The main difference is that a Sr Software Development Engineer In Test typically has more experience, leads testing efforts, and designs complex testing frameworks, while a Software Development Engineer In Test primarily focuses on developing and executing test scripts. Both roles require strong automation skills and are vital in ensuring software quality, but the senior role involves more leadership and strategic testing responsibilities.

What are some common challenges faced by a Sr Software Development Engineer in Test when working on large-scale projects?

Sr Software Development Engineers in Test (SDETs) often encounter challenges such as managing complex test automation frameworks, ensuring comprehensive test coverage for rapidly evolving codebases, and coordinating with multiple development and QA teams. Balancing the need for speed in continuous integration pipelines with maintaining high-quality standards can also be demanding. Additionally, SDETs are frequently responsible for mentoring junior testers and advocating for best testing practices across cross-functional teams, which requires strong communication and leadership skills.

What is a Sr Software Development Engineer In Test (Sr SDET)?

A Sr Software Development Engineer In Test (Sr SDET) is a senior-level professional responsible for designing, developing, and maintaining automated test frameworks and tools to ensure the quality of software products. They work closely with developers and other QA team members to create robust testing strategies, identify defects, and improve the overall software development process. Sr SDETs have advanced programming skills, deep knowledge of test automation, and often mentor junior team members. Their goal is to enable efficient, reliable, and scalable automated testing throughout the software development lifecycle.

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

To thrive as a Sr Software Development Engineer In Test, you need advanced programming skills (such as Java, Python, or C#), deep understanding of software testing methodologies, and a bachelor’s or master’s degree in computer science or a related field. Expertise with automation frameworks (like Selenium or Cypress), CI/CD tools (Jenkins, Git), and test management systems is typically required, along with certifications such as ISTQB being beneficial. Exceptional problem-solving abilities, attention to detail, and strong collaboration and communication skills distinguish standout professionals in this role. These competencies ensure the delivery of high-quality, reliable software products through efficient test automation and seamless teamwork.
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Sr Software Development Engineer In Test jobs near you
Infographic showing various Sr Software Development Engineer In Test job openings in California as of June 2026, with employment types broken down into 25% As Needed, and 75% Full Time. Highlights an 92% Physical, 1% Hybrid, and 7% Remote job distribution.
Senior Software Development Engineer in Test

Senior Software Development Engineer in Test

cosm

Dallas, TX

$120K - $150K/yr

Other

Posted 25 days ago

Job description

Summary:

The Cosm Engineering team develops technology to deliver best-in-class experiences in our digital and live-streaming products. We are looking for a talented Senior Software Development Engineer in Test to help ensure quality and user experience across various platforms. We expect our engineers to be versatile, display leadership qualities, and be enthusiastic when taking on new problems across the full stack as we continue to push technology forward.

Responsibilities:

  • Architect, build, and maintain scalable automation frameworks for consumer-facing apps, internal tools, and immersive streaming platforms.
  • Develop automated tests for APIs, mobile, web, and emerging immersive applications, emphasizing performance, security, and user experience.
  • Collaborate with product managers and QA teams to prioritize and integrate high-impact tests into development cycles.
  • Lead code reviews on pull requests, mentor peers, and enforce quality standards.
  • Partner cross-functionally with design, product, and engineering teams to identify risks and enhance overall UX.
  • Proactively spot quality issues, optimize testing pipelines, and leverage CI/CD for faster, reliable deliveries.

Experience:

  • Bachelor’s degree in Computer Science, Engineering, or equivalent.
  • 6-8 years of hands-on experience coding and building automation frameworks, ideally in high-traffic digital, streaming, or entertainment environments
  • Strong proficiency in TypeScript, JavaScript, or similar languages for robust test scripting.
  • Proven track record with frameworks like WebdriverIO, Appium, Cypress, or equivalents.
  • Expertise in testing libraries such as Mocha.js, Jest, or similar.
  • Familiarity with cloud testing services like BrowserStack, LambdaTest, or Sauce Labs.
  • Demonstrated experience automating tests for APIs, web, and mobile apps with comprehensive coverage.
  • Proficiency with test management tools like Xray or TestRail.
  • Analytical eye for risks to quality and UX; strong communicator in cross-functional settings; enthusiastic about mentoring and innovation.
  • Knowledge of immersive tech (e.g., VR/AR), streaming protocols, or performance testing in media/entertainment is a huge plus.

The annualized base salary range for this position in California is $120,000- $150,000. The base salary offered will factor in internal equity and may also vary depending on the candidate's geographic region, job-related knowledge, skills, and relevant experience, among other factors.

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