Security Jobs in Naperville, IL

Primary Responsibilities :

• Technical information security systems management including - but not limited to - endpoint protection; application control; email security; firewalls; vulnerability management; data loss prevention; cloud security services; security information and event management.
• Manage firmwide Cybersecurity incident response program management.
• Manage vulnerability management program and technology risk management program.
• Provide subject matter expertise on information security matters to technologists, business associates, managers, and executives.
• Develop and maintain business relationships with managed and / or professional information security services firms.
• Lead information security projects and enhancement efforts.
• Contribute to development of information security awareness program.
• Contribute to development of information security policies, standards, and procedures.
• Provide input to the development of information security strategy and other cybersecurity and technology planning efforts.
• Stay abreast of relevant information security threats, news, and technologies.
• Respond to high-severity security alerts that may occur off-hours - including nights or weekends.
• Respond to escalated cybersecurity help desk tickets and participate in disaster recovery planning activities.
• Perform related duties as assigned.

Preferred Qualifications :

• Bachelor's degree
• in computer science, engineering or equivalent is required
• Minimum of 8 years
• of professional information security or cybersecurity experience is required.
• Technical or professional certifications are preferred.
• Advanced degree in Information Security or equivalent is desirable.
• Minimum one year's experience managing delivery of cybersecurity services in an enterprise environment is desirable.
• Minimum two years' professional experience in financial services or business consulting industry is highly preferred.
• Interest in financial services industry and demonstrable passion for technology is required.
• Firewall administration / management experience and Cyber incident management experience is preferred.
• Project management experience with the ability to successfully complete projects on time and within budget is preferred.
• Strong verbal and written communication skills are required.
• Experience with Microsoft technologies including Defender, Entra, Intune, Sentinel, and Azure strongly preferred.
• Skills

Cyber security, SIEM, Vulnerability management, endpoint protection, antivirus, palo alto, Firewall, Information security

• Experience Level

Expert Level

• Job Type & Location
• This is a Permanent position based out of Naperville, IL.
• Pay and Benefits
• The pay range for this position is $150000.00 - $170000.00 / yr.

Benefits

Calamos offers a comprehensive benefits package, including health and welfare benefits (medical, dental, vision, flexible spending accounts, and employer-paid short and long-term disability), as well as retirement benefits (401(k) and profit sharing), paid time off, paid parental leave, and other wellness benefits.

• Workplace Type
• This is a fully onsite position in Naperville,IL.
• Application Deadline
• This position is anticipated to close on Dec 23, 2025.

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About TEKsystems :

We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

About TEKsystems and TEKsystems Global Services

We're a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. We're a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. We're strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. We're building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.