Junior Manual Test Engineer

Leidos has a new and exciting opportunity for a Junior Manual Test Engineer. 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!  

Job Description/Summary
Leidos has an exciting opportunity for a Junior Manual Test Engineer on an important, fast-paced, mission critical program. The selected candidate will perform component, integration, and system level testing by writing and executing system-level test procedures, evaluating changes made to software applications, and verifying defect corrective actions discovered during development, testing, and/or operational use. The selected candidate will join the existing Manual Test Team in support of a fast-paced, dynamic software development program. The Manual Test team is part of a test organization that includes teams that automate regression tests and maintain a complex testing framework and infrastructure. The selected individual will utilize basic system administration skills and will work with physical equipment in a test lab environment.

Primary Responsibilities

• Perform system testing of components (modules) and integration testing through system and end-to-end evaluation.
• Document test results for corrective actions, reporting, and audits.
• Develop test methodologies and perform subsystem interface and software module testing.
• Develop and implement test procedures and test reports.
• Review test plans and define test acceptance criteria.
• Develop and refine test data.
• Identify interface requirements for software components.
• Support the software configuration management process.
• Provide system testing input for test procedures/documentation.
• Assist the Software Development, System Engineering, Integration, Deployment, and Sustainment Teams with test-related tasking when necessary.

Basic Qualifications

• Bachelor’s degree in Computer Science, Engineering, Statistics, or a related discipline and at least 2 years of prior relevant work experience. Additional experience may be substituted for a degree.
• Experience/familiarity with the software development lifecycle (SLDC) and basic testing concepts (test cases, test plans, defect tracking, regression testing, etc.).
• Experience in software testing, system administration, and/or quality assurance.
• Experience executing test cases and documenting results clearly and accurately.
• Ability to log, track, and retest defects using a bug-tracking tool (e.g., JIRA, Azure DevOps, or similar).
• Basic skills with SQL or data verification (e.g., validating results in a database or log files).
• Experience working with physical hardware and equipment for software integration.
• Ability to work collaboratively in a team environment and communicate clearly with other testers, developers, system engineers, and other stakeholders.
• Must have strong attention to detail and the ability to follow test scripts and procedures.
• Strong problem-solving skills and willingness to learn new tools and technologies.

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

Preferred Qualifications

• Experience participating in formal test events such as Acceptance Test, User Acceptance Test, Software Final Release Test, Maintenance Release Test, etc..
• Experience/familiarity 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).
• Experience working on an Agile program.

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 – apply today.

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CONMD

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:

April 8, 2026

Pay Range:

Pay Range $69,550.00 - $125,725.00

The Leidos pay range for this job level is a general guideline only and 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.