Software Integration & Test Engineer

CACI International Inc.; King of Prussia (PA); On-site; USD 69,000 - 142,000; Full time

Job summary

CACI International Inc. is seeking a Software Integration and Test Engineer to design, develop, and implement test plans for software verification and validation in the space domain.

You will write test scripts in Python, Perl, and Linux, engage in full-stack feature delivery, and collaborate with IPT leads and customers. Ideal candidates have 3+ years of software development, strong Java/Python/JS/C# skills, and experience with REST APIs and CI/CD.

Qualifications

• Bachelor’s degree in computer science or related field and 3+ years of professional software development experience.
• Solid programming experience in Java, Python, JavaScript/TypeScript, or C#, with ability to write clean, testable code.
• Experience with test automation scripting and frameworks (Python, Bash, Perl) and automated testing tools (PyTest, JUnit, Selenium, Postman/Newman, Cucumber).
• Familiarity with Git, code reviews, and Agile/Scrum teams.
• Experience building or working with RESTful APIs and web applications, with integration and end-to-end testing.

Responsibilities

• Deliver Features with Increasing Independence, from requirements to deployment.
• Write clean, production-ready code and maintainability-focused tests.
• Support junior engineers through questions and pairing, and guide best practices.
• Contribute to modern development practices with CI/CD and automated test pipelines.
• Collaborate across product, design, and test leads; communicate progress clearly.
• Continuously grow skills in automation, integration, and system reliability.

Skills

Java

Python

JavaScript/TypeScript

C#

Education

Bachelor’s degree in computer science or related field

Tools

Git

Selenium

Postman/Newman

JUnit

PyTest

Cucumber

Docker

Kubernetes

Jenkins

GitHub Actions

GitLab CI

Job description

Job Title: Software Integration & Test EngineerJob Category: EngineeringTime Type: Full timeMinimum Clearance Required to Start: NoneEmployee Type: RegularPercentage of Travel Required: Up to 10%Type of Travel: Continental USAnticipated Posting End: 11/27/2026The Opportunity:Grow your software engineering career with meaningful impact as a Software Integration and Test engineer working in the space domain!We are seeking a Software Integration and Test (SWIT) Engineer who wants to solve interesting, complex problems to protect our nation. As a SWIT engineer on this team, you will work in a team environment to design, develop, and implement test plans and procedures for software (SW) requirement verification & validation. You will be responsible for SW integration, requirement analysis, test planning and execution, performance analysis, troubleshooting and coordination for remediating software defectsIn this role you will write test procedure scripts in Perl, Python, Linux, and with automated software test tools. In support of the test execution leads, you will conduct test walk throughs, and communicate plans, status and out-briefs with the IPT leads, team members, and the customer.If you're passionate about technology, ready to grow beyond junior-level work, and excited to make an impact on space mission systems, we would love to hear from you!What makes this role exciting:Deliver features independently - take ownership of well-scoped features from implementation through deploymentExpand your expertise - work with modern technologies (Python, Java, Spring Boot, React, AWS/Azure, Kubernetes) with increasing complexityCollaborate and learn - work alongside senior and staff engineers who will help you level up your skillsSpace domain impact - build software that directly supports critical space missionsIf you're ready to take the next step in your career, build increasingly complex software, and contribute to systems that matter, let's talk!Responsibilities: Deliver Features with Increasing Independence Implement full‑stack features with clear requirements, breaking work into steps and identifying integration points. Drive features through review, testing, and deployment while raising integration issues and edge cases early.Write Quality, Production‑Ready CodeDevelop clean, maintainable, testable code aligned with team standards.Create thorough unit and integration tests, debug issues, and contribute meaningfully in code reviews.Support Junior Team Members Assist junior engineers through questions, pairing, and sharing best practices for troubleshooting and integration.Provide constructive code reviews and help onboard new team members with guidance on workflows and tools.Contribute to Modern Development PracticesWork with REST APIs, microservices, and cloud deployments while applying integration principles.Use CI/CD pipelines and automated test frameworks, helping troubleshoot deployment and integration issues.Collaborate Across the TeamClarify requirements with product/design partners and ensure they are testable.Communicate progress and challenges, contribute to technical discussions, and document work for team clarity.Continue Growing Your Skills Learn new technologies relevant to automation, integration, and system reliability.Identify opportunities to improve code quality and propose enhancements to processes or tooling.Qualifications:Required:Education: Bachelor’s degree in computer science or related field + 3 years of professional software development experience (or equivalent combination of education and experience)Professional Development Experience : 3+ years developing, integrating, testing, and deploying software in a professional environmentProgramming Proficiency : Solid skills in at least one modern language (Java, Python, JavaScript/TypeScript, C#), including the ability to write clean, testable, and automatable codeSoftware Testing : Experience in Test Automation scripting and languages (Python, Bash, Perl) and exposure to automated testing frameworks and tools (e.g., PyTest, JUnit, Selenium, Postman/Newman, Cucumber)Modern Development Practices : Experience with version control (Git), code reviews, and working in Agile/Scrum teamsAPI & Web Development : Experience building or working with RESTful APIs and web applications, with an understanding of integration and end-to-end testingCollaboration & Communication : Ability to work effectively on a team, communicate technical concepts clearly, and collaborate with cross-functional partners including integration and test leadsLocation : Ability to work in our office at least 3 days per week (up to 5 days a week once you obtain a security clearance)Security Clearance : Willing to be submitted for and able to obtain a TS/SCI U.S. Government Security ClearanceDesired:Experience with Spring Boot, React, or similar modern frameworks in productionHands-on experience deploying applications to AWS, Azure, or GCP, including validating deployments and automated environment testingFamiliarity with containerization technologies (Docker, Kubernetes) and associated integration workflowsExperience with relational (PostgreSQL, MySQL) and NoSQL databases, including data validation and integration testingUnderstanding of CI/CD concepts and tools (Jenkins, GitLab CI, GitHub Actions), with exposure to automated test pipelinesExperience working with microservices architectures and verifying interactions through automated integration testsPrevious experience in aerospace, defense, or other regulated industries involving formal verification and validationActive U.S. Government Security Clearance (TS/SCI preferred)-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.Since this position can be worked in more than one location, the range shown is the national average for the position.The proposed salary range for this position is:$69,100-$141,500CACI 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.