CACI International · Lisle, Illinois, US

Software Engineer

OpenFull-timePay not stated

Open — CACI International has a posting for this job. Posted 28 Oct 2026.

This posting

Posted 28 Oct 2026 · Full-time · Pay not stated

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About this job

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: Local

* * *

The Opportunity:

You will demonstrate breadth and flexibility by contributing at various levels of software development including firmware, device drivers, real-time operating systems (RTOS) and application software. You will be part of a team that solves the most complex networking and communications challenges facing the U.S. Federal Government. You will help deliver groundbreaking research, and advanced networking and communications solutions that provide an information advantage that contributes to the mission and operational success of CACI customers.

Responsibilities:

  • Design, develop, integrate, test, and maintain complex software solutions in telecommunications and IP/computer networking equipment in the cyber security domain
  • Work with a product development team to develop concepts, identify creative solutions to user requests and assess feasibility of these solutions
  • Consult on technical activities spanning multiple technical disciplines including security analysis, software/tool development, software test, lab environment, development environment and system infrastructure
  • Act as the technical liaison to customers in representing key issues
  • Operate effectively and comfortably in a team environment, as a team member and as a team leader. This includes the ability to work across organizational boundaries, as necessary
  • Assist technical management in facilitating process changes needed to meet customer quality and schedule requirements
  • Interact with product development teams, project managers and partners
  • Prioritize work including meeting schedules, identifying risks and delivering high quality software
  • Understand and adhere to all CACI Ethical and Compliance policies
  • Proactively ensure a safe work environment and adhere to CACI EH&S policies and procedures
  • Perform other duties as required

Qualifications Required:

  • Bachelor’s and/or Master’s Degree in Computer Engineering, Computer Science, Electrical Engineering or related technical discipline
  • Minimum of 5 years of experience or an equivalent combination of education, skills, and experience
  • Familiar with development in either Windows, Linux and/or Unix-based operating systems
  • Software development skills in languages such as: C, C++, Python or comparable languages
  • Use of development tools (e.g. editors and compliers)
  • Willingness and ability to quickly learn new technologies

Desired:

  • Familiarity with software security concepts such as intrusion detection, cryptography, authentication, firewalls, secure coding practices.
  • Understanding of network hardware, systems and software application.
  • Knowledge of Internet routing protocols, TCP/IP stack and tools
  • Experience developing software for embedded systems
  • Familiarity with multi-threaded applications and multi-processor systems
  • Familiarity with low-level programming such as device-driver and OS programming
  • Understanding of processor architectures (ARM, MIPS, x86, PowerPC) and associated assembly language programming
  • Experience with reverse engineering of binary applications, protocols and formats
  • Experience debugging system-level issues with various lab equipment.
  • Strong oral and written communication skills
  • Ability to work both independently and as a collaborative team member
  • Flexibility to adapt to new and changing environments
  • Knowledge of telephony
  • Familiar with software engineering process concepts from requirements reviews, code inspection to component delivery and sign-off
  • Knowledge of Microsoft software applications and other software applications as required

A TS/SCI clearance is required to begin employment. For this position, CACI has the ability to provide clearance sponsorship for qualified individuals.

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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

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.

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Also open — same job, other postings

More open postings for this job here

Each posting applies separately and lists its own pay.

  • Other posting · Req Lisle-IL-US · Posted 17 Sep 2026

    Pay not stated

    Apply
  • Other posting · Req Lisle-IL-US · Posted 17 Sep 2026

    Pay not stated

    Apply
  • Other posting · Req Lisle-IL-US · Posted 1 Sep 2026

    Pay not stated

    Apply

If the main posting closes, the newest of these takes its place and this page stays open.

Not this job's pay

What do Corporate – Information Technology jobs in Illinois pay?

Talentify has no pay figure for this posting. The lines below are about Corporate – Information Technology jobs on Talentify in Illinois as a group, computed by Talentify's job index across their postings. They are not the pay for this job.

Of the 484 Corporate – Information Technology jobs on Talentify in Illinois, 119 list pay per year.

Taking the midpoint of each listed range, the middle half pay 95,605–133,950 USD per year and the median is 109,000 USD per year.

76 of these 119 name no currency; they are counted as USD because the jobs are in the United States.

Pay as employers listed it, not adjusted or verified. Updated 2026-11-12.

Computed on 2026-11-12 from the pay in 119 listings.

Not this job's pay

U.S. Bureau of Labor Statistics, for Software Developers, the occupation this job title matches. It describes the occupation, not this job.

The median wage for Software Developers in Illinois was 63.52 USD per hour (132,110 USD per year) in May 2025; the middle half earned 48.82–80.01 USD per hour.

U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025

Software Engineer pay and outlook in Illinois

Also open

Also open at CACI International

CACI International's other jobs that have a page here. Each page says open or closed for itself.

Same job, other employers

Software Engineer jobs in Illinois at other employers

Pages on Talentify for this job in Illinois, at employers other than CACI International. Each page says open or closed for itself.

This page remembers. 5 postings recorded.

5 postings recorded.computed from 4 events, 2026-10-16 to 2026-11-07.