Software Engineer

Location: Denver, CO, US

Department: Software Engineering

Work Location: onsite

Job Title: Software Engineer

Job Category: Engineering

Time Type: Full time

Minimum Clearance Required to Start: TS/SCI

Employee Type: Regular

Percentage of Travel Required: Up to 10%

Type of Travel: Continental US

Anticipated Posting End: 10/26/2026

The Opportunity:
Are you ready to build the automated testing that keeps complex products running reliably? We’re seeking a Software Engineer to develop and own Python-based test automation for one of our key programs. In this role, you’ll design, implement, and maintain software that integrates with external hardware to exercise both the hardware and our product for verification and regression testing. You’ll be responsible for the full development lifecycle—from understanding requirements through coding, debugging, and continuous improvement—while collaborating closely with cross-functional teams to expand coverage and improve product quality. Join us and help drive robust, scalable test solutions that ensure our products perform as designed in the real world.

Responsibilities:

• Develop and maintain Python-based automated test software for a key product, owning the full lifecycle from design and implementation through execution and ongoing improvement.
• Integrate external hardware with Python (e.g., via drivers, APIs, and communication interfaces) to exercise both the hardware and our product for verification and regression testing.
• Collaborate with cross-functional teams to translate product and hardware requirements into robust, repeatable automated test coverage that improves quality and reduces manual effort.
• Analyze automated test results, troubleshoot issues, and drive root-cause identification to help ensure reliable, high-quality product releases.

Qualifications:
Required: 

• Experience in software development or test automation, or equivalent practical experience.
• Strong proficiency in Python, including writing clean, modular, and maintainable code.
• Interest in or experience with integrating external hardware with software (e.g., using communication protocols such as USB, Serial, Ethernet, or vendor-specific SDKs/APIs).
• Solid understanding of software development best practices (version control, code review, debugging, documentation).
• Ability to work independently on assigned tasks while collaborating effectively within a team.
• Strong problem-solving skills and a mindset focused on quality and verification.
• Active TS/SCI clearance.
• 5 years of related work experience.

Desired:

• Experience developing in Python or in structurally similar languages/patterns (e.g., Java, C#, TypeScript, or C++ with strong OOP, standard library use, and unit testing), with a demonstrated ability or strong willingness to transfer those skills into a Python-based environment
• Experience with automated test frameworks (e.g., pytest, unittest, Robot Framework, or similar).
• Experience with lab/measurement equipment (oscilloscopes, power supplies, DAQs, etc.) and their automation
• Familiarity with CI/CD systems and integrating automated tests into build pipelines.
• Familiarity with one of more of the following cellular standards: GSM, UMTS, LTE

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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:

$90,300 - 189,600 USD