Senior Software Development Engineer in Test (SDET)

Job ID: 5579
Date Posted: November 26, 2025

Join the Space Dynamics Laboratory (SDL) team, where you'll contribute to groundbreaking innovations! We are seeking applicants for an experienced Senior Software Development Engineer in Test to join our Strategic Military Space Division.

The Strategic & Military Space Division delivers advanced satellite and sensor systems that support the Department of Defense and the Intelligence Community. Our division is a key component of national security, providing technological solutions and expert mission support. Become part of a team dedicated to making a tangible contribution to our nation’s defense capabilities.

Key Responsibilities:

• Develops and continually improves regression and acceptance tests including automated tests
• Tests, investigates, and manages defects and discrepancies for software with and without a UI
• Provides test leadership as part of the software development teams
• Continually evaluates and helps refine internal and external customer requirements
• Develops test strategies to meet the release schedule for multiple programs
• Assists in directing student employees in the test and independent validation and verification process
• Maintains strict confidentiality of sensitive information
• Develops new test methodologies for emerging technologies

• Must be a US citizen with the ability to obtain and maintain US Government Security Clearance
• BS degree in a technical field with 10+ years of relevant experience, or a MS degree with 8+ years of relevant experience
• Considered an expert in the field of software testing and configuration management processes
• Demonstrated broad knowledge, understanding, and perspective in software test application and test items
• Ability to relate well to people at all levels inside and outside of the organization
• Working knowledge of Linux and Windows
• Strong verbal and written communication skills
• Ability to work independently and with team members
• Skill with one or more of the following: C++, C#, Selenium, CSS, Node.js, Confluence, Jira, Zephyr, BitBucket, VMware/VirtualBox, Jenkins, Visual Studio, SQL, Git

• Experience in an Agile software development environment
• Experience implementing software test in a CI/CD software development environment
• Active TS security clearance

• $117,000 - $162,000
  • Salary commensurate based on education and experience

This range serves as a general guideline and may vary based on factors such as role, level, location, market conditions, and individual qualifications, including job-related skills, experience, and relevant education or training. The range displayed in the job advertisement reflects the minimum and maximum target salaries across all US locations. Specific salary details for a candidate’s preferred location can be provided by the recruiter or HR manager during the hiring process.

Why Join SDL?
*SDL offers competitive salaries and a comprehensive benefits package. Visit our Benefits Page to learn more about what we offer.

SDL delivers advanced multi-domain solutions to protect national security and enable scientific discovery. Our expertise in satellites, sensors and instruments, ground systems and data processing, and autonomous systems plays a critical role in missions supporting NASA and the Department of Defense. Join our team of engineers, scientists, technicians, and business professionals in our seventh decade of delivering mission success.

At SDL, we strive to uphold a culture of respect, collaboration, empowerment, and accountability. We listen with open minds, seek to understand diverse perspectives, and engage in thoughtful dialogue. We work together by sharing knowledge, involving others, and offering support. We trust and empower our team members to take ownership, act with integrity, and be accountable. Above all, we deliver on our commitments to each other and to ou