Job Description

Job Title: Senior Software EngineerJob Category: EngineeringTime Type: Full timeMinimum Clearance Required to Start: Top SecretEmployee Type: RegularPercentage of Travel Required: Up to 10%Type of Travel: Continental US* * *

The Opportunity
We are seeking a Senior Software Engineer to design and develop advanced cyber capabilities that strengthen national security. In this role, you'll work across real‑time embedded systems, network technologies, and mission‑critical cybersecurity solutions. You’ll collaborate with engineers, analysts, and customers to solve complex technical challenges, perform deep‑dive research, and build innovative tools that address emerging cyber threats.

Responsibilities
• Lead the design, development, and testing of real‑time embedded and application‑level software for networked systems
• Develop advanced security analysis tools, vulnerability research workflows, and software‑hardening techniques
• Conduct reverse engineering across Windows, Linux, mobile, and embedded platforms
• Serve as a subject matter expert in key network technologies (IP/MPLS, 4G/5G, optical transport, and related areas)
• Analyze and evaluate security strengths and weaknesses across diverse systems and technologies
• Shape system requirements and technical direction through direct collaboration with customers
• Mentor junior engineers and contribute to team technical leadership
• Obtain and maintain a government security clearance

Qualifications
Required:
• 7+ years of software development experience using C, C++, Python, or similar languages
• Hands‑on Linux experience (boot, kernel, and user‑space layers)
• Demonstrated competency with at least one assembly language: MIPS, x86, PowerPC, or ARM
• Solid understanding of IP networking concepts and telecommunications systems
• Bachelor’s degree in Computer Science, Computer Engineering, or related discipline

• Active Top Secret clearance

Desired:
• Active TS/SCI clearance strongly preferred
• Knowledge of cybersecurity, vulnerability analysis, and modern network technologies (IP, wireless, optical)
• Ethical hacking experience and familiarity with reverse engineering tools
• Experience with embedded system software development
• Ability to apply multiple assembly languages across diverse architectures

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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:

$113,200 - $237,800 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.