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Cyber Security Jobs in O Fallon, IL (NOW HIRING)

Cybersecurity Engineer

Highland, IL · On-site

$96K - $113K/yr

Description The Cybersecurity Engineer will focus on crafting comprehensive cybersecurity policies, responding to cyber questionnaires, investigating malware incidents, managing patching software ...

Job Title: Cyber Security Engineer Location: St. Louis, MO Work Model: Onsite Position Type: 6 Month Contract to Hire Clearance Requirement: Active TS/SCI required and ability to obtain poly Job ...

Job Title: Cyber Security Engineer Location: St. Louis, MO Work Model: Onsite Position Type: 6 Month Contract to Hire Clearance Requirement: Active TS/SCI required and ability to obtain poly Job ...

Job Title: Cyber Security Engineer Location: St. Louis, MO Work Model: Onsite Position Type: 6 Month Contract to Hire Clearance Requirement: Active TS/SCI required and ability to obtain poly Job ...

Job Title: Cyber Security Engineer Location: St. Louis, MO Work Model: Onsite Position Type: 6 Month Contract to Hire Clearance Requirement: Active TS/SCI required and ability to obtain poly Job ...

Job Title: Cyber Security Engineer Location: St. Louis, MO Work Model: Onsite Position Type: 6 Month Contract to Hire Clearance Requirement: Active TS/SCI required and ability to obtain poly Job ...

Job Title: Cyber Security Engineer Location: St. Louis, MO Work Model: Onsite Position Type: 6 Month Contract to Hire Clearance Requirement: Active TS/SCI required and ability to obtain poly Job ...

Job Title: Cyber Security Engineer Location: St. Louis, MO Work Model: Onsite Position Type: 6 Month Contract to Hire Clearance Requirement: Active TS/SCI required and ability to obtain poly Job ...

Job Title: Cyber Security Engineer Location: St. Louis, MO Work Model: Onsite Position Type: 6 Month Contract to Hire Clearance Requirement: Active TS/SCI required and ability to obtain poly Job ...

Job Title: Cyber Security Engineer Location: St. Louis, MO Work Model: Onsite Position Type: 6 Month Contract to Hire Clearance Requirement: Active TS/SCI required and ability to obtain poly Job ...

Job Title: Cyber Security Engineer Location: St. Louis, MO Work Model: Onsite Position Type: 6 Month Contract to Hire Clearance Requirement: Active TS/SCI required and ability to obtain poly Job ...

Job Title: Cyber Security Engineer Location: St. Louis, MO Work Model: Onsite Position Type: 6 Month Contract to Hire Clearance Requirement: Active TS/SCI required and ability to obtain poly Job ...

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Cyber Security information

See O Fallon, IL salary details

$53.2K

$124K

$173.5K

How much do cyber security jobs pay per year?

As of Aug 25, 2026, the average yearly pay for cyber security in O'Fallon, IL is $124,028.00, according to ZipRecruiter salary data. Most workers in this role earn between $103,500.00 and $139,900.00 per year, depending on experience, location, and employer.

What is cyber security?

Cyber security refers to the practice of protecting computer systems, networks, and digital data from unauthorized access, attacks, and damage. It involves various technologies, processes, and best practices designed to safeguard sensitive information and ensure the integrity, confidentiality, and availability of data. Cyber security professionals work to prevent cyber threats such as hacking, phishing, malware, and ransomware. With the increasing reliance on digital technologies, cyber security has become essential for individuals, businesses, and governments to protect against cybercrime and data breaches.

What does a cyber security professional do?

As a cybersecurity professional, you help protect sensitive data and information online and on your employer’s servers. You manage firewalls, encryption, and databases, working at all times to stay ahead of whatever security threats might be putting your employer at risk. Cybersecurity is never a completed task; you must continue to assess risks and implement updates to stay ahead of them.

What are the key skills and qualifications needed to thrive as a cyber security professional, and why are they important?

To thrive as a Cyber Security professional, you need a solid understanding of network security, risk assessment, and information systems, typically supported by a degree in computer science or a related field. Familiarity with security tools like firewalls, intrusion detection systems, and certifications such as CISSP or CompTIA Security+ are highly valued. Strong analytical thinking, attention to detail, and effective communication help professionals identify threats and collaborate with teams. These skills and qualifications are crucial for protecting organizations from evolving cyber threats and ensuring the integrity of sensitive data.

How does a cyber security professional typically collaborate with other departments within an organization?

Cyber Security professionals work closely with various departments, such as IT, legal, and compliance, to ensure that security policies are effectively implemented and maintained. They often participate in cross-functional meetings to assess risks, communicate potential threats, and develop incident response plans. Building strong relationships with other teams is crucial, as it helps foster a culture of security awareness and ensures that all employees understand their role in protecting organizational data. Effective collaboration also allows for quicker identification and resolution of security issues.

What is the difference between Cyber Security vs Network Security?

AspectCyber SecurityNetwork Security
CertificationsCompTIA Security+, CISSP, CEHCompTIA Security+, Cisco CCNA Security
Work EnvironmentProtects digital assets across entire organizations, including applications and dataFocuses on securing network infrastructure, devices, and communication channels
Employer & Industry UsageUsed across all industries to safeguard information systemsPrimarily used in IT and networking departments within organizations

Cyber Security encompasses a broad range of practices to protect all digital assets, including networks, applications, and data. Network Security is a subset focused specifically on securing network infrastructure and communication channels. While both roles require similar certifications and are vital in IT, Cyber Security professionals have a wider scope, whereas Network Security specialists concentrate on network-specific threats and defenses.

Is cybersecurity a hard job to learn?

Cybersecurity is a complex field that requires understanding of networks, systems, and security principles, often involving learning programming, threat analysis, and security tools. While it can be challenging initially, gaining certifications like CompTIA Security+ or CISSP and practical experience can help develop skills more effectively.

What jobs can I do with cyber security?

With a background in cyber security, you can pursue roles such as security analyst, penetration tester, security engineer, incident responder, or security consultant. These jobs typically require knowledge of network security, risk management, and tools like firewalls and intrusion detection systems, often supported by certifications such as CISSP or CEH.

What kind of jobs can you do in cyber security?

Cyber security offers a range of roles including security analyst, penetration tester, security engineer, incident responder, and security architect. These jobs typically require knowledge of networks, systems, and security tools, along with certifications like CISSP or CompTIA Security+; work environments can vary from corporate offices to remote settings.

What are the most commonly searched types of Cyber Security jobs in O'Fallon, IL?

The most popular types of Cyber Security jobs in O'Fallon, IL are:

What are popular job titles related to Cyber Security jobs in O'Fallon, IL?

For Cyber Security jobs in O'Fallon, IL, the most frequently searched job titles are:

What cities near O'Fallon, IL are hiring for Cyber Security jobs?

Cities near O'Fallon, IL with the most Cyber Security job openings:

Infographic showing various Cyber Security job openings in O'Fallon, IL as of August 2026, with employment types broken down into 94% Full Time, 4% Part Time, and 2% Contract. Highlights an 89% In-person, and 11% Remote job distribution, with an average salary of $124,028 per year, or $59.6 per hour.

Cyber Security Architect

Phase2 Technology

Scott Air Force Base, IL • On-site

$113 - $257/hr

Other

Medical, Life, Retirement, PTO

Posted 7 days ago


Job description

Job Number: R0246631

Cyber Security Architect The Opportunity

Everyone knows security needs to be "baked in" to a system architecture, but you actually know how to bake it in. You can identify and implement ways to harden systems and reduce their attack surface. What if you could use your cyber engineering skills to design and build secure systems for the U.S. Government? We're looking for an architect who can create solutions for the government that will stand up to even the most advanced cyber threats.

As a Cybersecurity Architect on our project, you'll lead the architecture and design efforts of innovative Cybersecurity solutions and service offerings to protect federal networks. You'll coordinate with dynamic team of thought leaders and experts to identify the right mix of tools and techniques to translate your customer's IT needs and future goals into a plan that will enable secure and effective solutions. We need to come up with the best solution, so you'll investigate new techniques, break free from the legacy model, and go where the industry is going. You'll lead the team through a critical approach to network design, providing alternatives and customizing solutions, to maintain a balance of security and mission needs. This is a chance to make a difference in the security of the U.S. Government. Your technical expertise will be vital as you help customers overcome their most difficult challenges by leading Cybersecurity technologies and domains, including IoT and Cloud security, Automation and Orchestration (A&O), identify and access management, and machine learning. Join our team, as we tackle Cybersecurity challenges and shape opportunities to implement solutions and service offerings leveraging investments and proven capabilities.

Join us. The world can't wait.

You Have:
  • 10+ years of experience with Cybersecurity
  • 5+ years of experience with leading technical project delivery for large, complex organizations
  • 5+ years of experience in network architecture and design
  • Ability to work with and guide senior leaders, including CISO, CIO, and CTO, and executives to ideate, build, and execute cybersecurity capability maturation
  • Ability to collaborate with project and proposal teams effectively to incorporate Cybersecurity solutions and develop high quality implementation plans and roadmaps
  • Ability to author technical documentation and whitepapers and blogs on leading Cybersecurity topics and concepts
  • Secret clearance
  • HS diploma or GED
Nice If You Have
  • Experience in a Cybersecurity compliance, operations, or engineering leadership role
  • Experience with selecting, designing, and implementing security tools and capabilities for large, complex federal or commercial organizations
  • Experience with innovative Cybersecurity capabilities, including A&O, AI and machine learning, NGFW, and Big Data
  • Experience with AWS, Azure, or GCP
  • Possession of excellent oral and written communication skills
  • TS/SCI clearance
  • Bachelor's degree
  • Information Security Certification, including CEH, CISM, CCSP, CCSK, CISSP, or CompTIA Security+ Certification
Clearance:

Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information. Secret clearance is required.

Compensation

At Booz Allen, we celebrate your contributions, provide you with opportunities and choices, and support your total well-being. Our offerings include health, life, disability, financial, and retirement benefits, as well as paid leave, professional development, tuition assistance, work-life programs, and dependent care. Our recognition awards program acknowledges employees for exceptional performance and superior demonstration of our values. Full-time and part-time employees working at least 20 hours a week on a regular basis are eligible to participate in Booz Allen's benefit programs. Individuals that do not meet the threshold are only eligible for select offerings, not inclusive of health benefits. We encourage you to learn more about our total benefits by visiting the Resource page on our Careers site and reviewing Our Employee Benefits page.

Salary at Booz Allen is determined by various factors, including but not limited to location, the individual's particular combination of education, knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. The projected compensation range for this position is $112,800.00 to $257,000.00 (annualized USD). The estimate displayed represents the typical salary range for this position and is just one component of Booz Allen's total compensation package for employees. This posting will close within 90 days from the Posting Date.

Identity Statement

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during interviews and assessments. We reserve the right to take your picture to verify your identity and prevent fraud.

Candidate AI Usage Policy

AI is a part of our daily work at Booz Allen, and we are committed to the responsible and ethical use of AI tools. However, we want to ensure a fair candidate process based on your own skills and knowledge. As part of this commitment, the use of artificial intelligence (AI) or other tools to assist with responses during interviews (whether in-person or virtual) is prohibited unless permission is explicitly provided.

Work Model

Our people-first culture prioritizes the benefits of collaboration, whether it occurs in person or virtually. To support engagement and effective communication, employees working virtually are generally expected to have their cameras on during meetings.

  • Remote: If this position is listed as remote, there may still be occasions when you are required to work in person at a Booz Allen or customer facility.
  • Hybrid: If this position is listed as hybrid, you will be expected to work from a Booz Allen facility frequently, in alignment with leadership expectations and the needs of the role. You may also be required to work from or visit a customer facility.
  • Onsite: If this position is listed as onsite, work will primarily be performed at a Booz Allen office or customer facility, where employees will collaborate directly with colleagues and customers as required by the role.
Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, local, or international law.

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