Software Test Engineer, Mid-level — Denver

Job Title: Software Test Engineer, Mid-level Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: None Type of Travel: None Anticipated Posting End: 12/31/2026 The Opportunity: CACI is seeking a Software Test Engineer to join our Fusion Analysis & Development Effort (FADE) team at our Denver, CO location. As a Software Test Engineer, you will be instrumental in ensuring the quality and reliability of our software products. You will be responsible for designing, developing, and executing test plans, test cases, and test scripts to validate software functionality and data quality. Your expertise in database validation, source-to-target testing, and enterprise data flows will be essential to ensuring data is accurate, complete, consistent, and reliable. This is a ground-up opportunity to help architect and build comprehensive testing infrastructure and frameworks in a containerized environment. This role is perfect for someone who thrives in environments where they can shape and define testing standards and practices.   Responsibilities: • Develop and maintain comprehensive test plans, test cases, and test scripts for software applications • Execute manual and automated tests to verify software functionality, performance, and security • Data Test Development: Design, build, and maintain data test cases, reconciliation checks, test data sets, and expected results for FADE data and software • Data Validation: Validate data accuracy, completeness, consistency, integrity, formats, transformations, and business-rule compliance across source and target systems • Defect Management: Document data defects with queries, evidence, expected/actual results, and reproducible conditions; track issues through resolution and retest • Identity and assess new automation capabilities • Deliver new automation development scenarios as needed • Contributes to the continuous improvement of testing processes and tools   Qualifications: Required: • Current and active TS/SCI clearance and a polygraph is preferred • Minimum of 5 years of experience in software testing, with a proven track record of delivering high-quality test results • Bachelor’s degree in computer science or related field; or equivalent experience • Strong knowledge of testing methodologies, tools, and frameworks (e.g.,  TestNG, JUnit) • Experience with both manual and automated testing • Proficiency in scripting languages and environments (e.g., Python, Linux) for test automation  with demonstrated ability to work effectively from the command-line and process/report on large data sets (logs, test artifacts, results) • Experience with REST API testing, including validation of responses and negative/error-path testing • Experience with GitLab, Jenkins, or similar CI/CD workflow processes   Desired: • Experience with the Docker, Kubernetes/Helm, ArgoCD • Linux/Red Hat knowledge • Strong debugging skills across services, logs, containers, and test reporting outputs • Experience working with microservices architectures and verifying interactions through automated integration tests • The ability to effectively prioritize and execute tasks • Strong communication and collaboration skills - What You Can Expect:  A culture of integrity. At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation. An environment of trust. CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality. A focus on continuous growth. Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy. Pay Range : There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits. The proposed salary range for this position is: $82,700 - 173,900 USD CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.