Mid/Sr. Test Engineer TS/SCI Poly

Leidos; Corridor North (MD); On-site; USD 92,000 - 167,000; Full time

Benefits offered by this job

Paid Time Off

11 paid holidays

401K with 6% match

Flexible schedules

Discounted stock purchase

Technical Upskilling

Job summary

Leidos is seeking a Mid-Senior Test Engineer to support a high‑impact, multi‑agency program for space and defense customers. The role focuses on testing large-scale satellite communications systems, integrating PKI and Agile methods to ensure quality across the SDLC.

The ideal candidate will drive test priorities, collaborate with cross‑functional teams, and deliver formal test artifacts in a fast‑paced, mission‑critical environment. A TS/SCI with Polygraph clearance is required.

Qualifications

• Bachelor’s degree in a technical field, and at least 8 years of related experience.
• Experience testing across the full system development life cycle with test plans and processes.
• Experience authoring formal system tests to verify customer requirements.
• Experience documenting test results to support corrective actions and audits.
• Experience in Agile Scrum environments and cross-team collaboration.

Responsibilities

• Collaborate with Senior Engineers and stakeholders to define test priorities and schedules.
• Coordinate with System-Level Test Teams and Scrum Masters for test environment prep and test execution.
• Track cross-team dependencies affecting release test events.
• Interface with software, systems, IA engineers and stakeholders in an Agile setting.
• Apply BDD within the Agile framework to ensure test rigor and quality.
• Plan, execute, and oversee regression testing for customer builds and images.
• Engage with customer points of contact for Test Readiness and Results Reviews.
• Develop and deliver Test Plans, Test Descriptions, and Test Reports.
• Coordinate with Automated Test Development for CI-based test automation.

Skills

PKI expertise

Agile/Scrum

Test planning

Test execution

BDD/TDD

Communication skills

Regression testing

CI/test automation

Satellite knowledge

Education

Bachelor’s degree in a technical field

Tools

Automated test tools

Job description

Description

Leidos has a new and exciting opportunity for a Mid-Senior Test Engineer in our Intel Sector's Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security!

Leidos is seeking a Mid-Senior Test Engineer to support a high-impact, multi-agency program serving the United States Space Force (USSF)/Space Systems Command (SSC), the United States Air Force (USAF), and other key mission stakeholders. The selected candidate will play an important role on a critical program focused on enhancing, testing, and deploying a large-scale Satellite Communications (SATCOM) system within an existing infrastructure. The ideal candidate will bring strong expertise in public key infrastructure (PKI) and Agile development, along with exceptional problem‑solving, communication, and collaboration skills.

Primary Responsibilities:

• Collaborate with Senior Engineers and customer test stakeholders to define test priorities, align scope, and establish integrated test event schedules.

• Partner with System-Level Test Teams and Scrum Masters to assess tasking and resource requirements for test environment preparation, test procedure development, and execution of informal and formal test events.

• Drive the identification, tracking, and resolution of cross-team dependencies critical to the successful execution of program release test events.

• Serve as a key technical interface among software engineers, systems engineers, information assurance engineers, and other program stakeholders within an Agile Scrum environment.

• Apply Behavior Driven Development (BDD) practices within the program’s Agile framework to maintain engineering rigor, consistency, and quality across assigned efforts.

• Plan, execute, and oversee regression testing using the full suite of Operational Test Scenarios for customer-delivered builds and images.

• Engage with customer points of contact, as needed, to prepare for and support formal test milestones, including Test Readiness Reviews and Test Results Reviews, coordinate customer witnessing of formal tests, and ensure adequate test support for customer events.

• Develop, maintain, and deliver test artifacts and documentation, including Test Plans, Test Descriptions, and Test Reports.

• Collaborate with the Automated Test Development team when necessary and manage and monitor test automation within the continuous integration pipeline to support timely validation, issue identification, and reporting of test results.

Basic Qualifications:

• Bachelor’s degree in a technical field, and at least 8 years of related experience. Additional relevant work experience may be substituted for a degree.

• In-depth experience testing across the full system development life cycle, including development and implementation of test plans, test cases, and test processes.

• Demonstrated experience developing and executing formal system tests to verify compliance with customer requirements.

• Experience authoring detailed test procedures based on acceptance criteria derived from system and software requirements.

• Experience participating in formal test events, including Acceptance Test, User Acceptance Test, Software Final Release Test, and Maintenance Release Test.

• Experience collaborating with software developers to develop and refine formal test procedures.

• Proven ability to document test results in support of corrective actions, formal reporting, and audit activities.

• Hands-on experience designing and performing regression testing for software‑based systems.

• Experience analyzing test data, using configuration management tools, and validating software applications.

• Demonstrated experience conducting test activities within an Agile Scrum environment.

• Experience working with physical equipment in a test lab environment.

• Experience collecting, analyzing, presenting, and reporting test results both verbally and in writing.

• Experience using elevated privileges to set up and execute manual test procedures.

• Experience testing systems against established system and functional specifications.

• Strong communication skills, with the ability to effectively interact with both management and technical personnel.

• Clearance Required: Must have TS/SCI with Polygraph.

Preferred Qualifications:

• Experience with Behavior Driven Development (BDD) and Test-Driven Development (TDD).

• Experience using automated test tools.

• Experience with programming and scripting languages (i.e., Java, shell, Python, etc).

• SAFe Agilist or DevOps certification.

• Experience working in an Agile Development Environment or on an Agile Team.

At Leidos, the opportunities are boundless. We challenge our staff with interesting assignments that allow them to thrive professionally and personally. For us, helping you grow your career is good business. We look forward to learning more about you.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

Original Posting

September 12, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range

Pay Range $92,300.00 - $166,850.00

The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.