Platform Software Engineer

Posted Yesterday
Be an Early Applicant
2 Locations
In-Office
82K-172K Annually
Senior level
Information Technology • Consulting • Defense
The Role
Design, implement, test, and optimize wireless protocol stack components from PHY to L2/L3. Integrate solutions with customers, debug and validate in lab environments, profile and optimize code, and work across hardware and software domains including embedded Linux and device drivers.
Summary Generated by Built In
Job Title: Platform Software Engineer

Job Category: Engineering

Time Type: Full time

Minimum Clearance Required to Start: None

Employee Type: Regular

Percentage of Travel Required: Up to 10%

Type of Travel: Continental US

Anticipated Posting End: 9/20/2026

The Opportunity:

  • Define, design, implement, and test components of wireless protocol stacks, ranging from physical layer algorithms to layer 2/layer 3 procedures
  • Contribute to systems-level engineering discussions that reconcile the various use cases for our software in pursuit of best-in-class solutions
  •  Work with customers (both internal and external to CACI) to help integrate our solutions into a wide variety of applications and use cases•          
  • Debug, test, and validate our capabilities using both unit tests as well as scenarios reported by our end users
  • Travel to other CACI locations and/or customer sites in the US as necessary (travel requirement is typically 0 - 15%)
  • What You Can Bring to Our Team:
  • A drive to continuously improve and refine existing capabilities alongside new development opportunities.
  • Ability to work with a distributed team and manage your time effectively across multiple, simultaneous projects.
  • A strong understanding of modern C++ programming. We consider C++11 to be the minimum but love to use C++17/20 features where appropriate.
  • Knowledge of wireless physical layer algorithms and their implementations, or an ability to learn and understand existing implementations.
  • Code profiling experience, ability to identify critical code paths, and offer performance optimizations based on analysis over multiple scenarios.
  • Experience using wireless test equipment in lab environments, including test setup design.

Qualifications:

  • A bachelor’s degree (or higher) in Computer Science or Electrical Engineering or equivalent technical degree or an additional 4+ years of experience in lieu of degree.
  • 5+ years of related experience
  • Experience writing software for Linux-based operating systems
  • C/C++ programming experience, shown through project work or code examples
  • Demonstrated ability to read and understand technical specifications, and create software-based implementations of the procedures and methods described therein
  • Experience working in both SW and HW domains
  • Ability to read and understand schematics
  • Experience with low level debugging techniques (SW, probes, oscilloscopes)
  • Embedded SW development experience on custom designed hardware (Bootloaders, Device Drivers for: Ethernet, PCIe, I2C, SPI, GPS, MDIO, Sensors))
  • Embedded Linux OS development experience on custom designed hardware (Yocto, Kernel, Device Driver, File system, Containerization)
  • Software development experience for products based on 64-bit ARM and 64-bit x86 processors
  • Basic knowledge of RF concepts and Amplifiers
  • Networking knowledge (Ethernet 1G/10G/100/G, layer 2 switching, layer 3)
  • Experience with Git change control, GNU Make, Bash scripting, Python
  • Excellent communication and interpersonal skills
  • The ability to obtain and maintain and US Government Clearance at the TS/SCI level.
  • SI-defined mobile radio standards).
  • Previous experience with wireless protocols (e.g., 3GPP cellular protocols, IEEE wireless standards, and/or ITU/ET

Preferred Qualifications:

  • Master’s degree in related field
  • Familiarity with virtualization technologies and containerization (e.g., Docker, KVM)

-

_________________________________________________________________________

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.


Your potential is limitless. So is ours.

_________________________________________________________________________

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:

$82,100-$172,400

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.

Top Skills

Arm64 (64-Bit Arm)
Bash
C
C++ (C++11/17/20)
Containerization
Device Drivers
Ethernet (1G/10G)
Git
Gnu Make
Gps
I2C
Linux
Linux Kernel
Mdio
Oscilloscope
Pcie
Python
Spi
X86_64 (64-Bit X86)
Yocto
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The Company
Bristol
17,673 Employees
Year Founded: 1962

What We Do

CACI’s approximately 23,000 talented employees are vigilant in providing the unique expertise and distinctive technology that address our customers’ greatest enterprise and mission challenges. Our culture of good character, innovation, and excellence drives our success and earns us recognition as a Fortune World's Most Admired Company. As a member of the Fortune 1000 Largest Companies, the Russell 1000 Index, and the S&P MidCap 400 Index, we consistently deliver strong shareholder value. Visit us at www.caci.com.

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