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Senior Security Engineer Jobs in Decatur, IL (NOW HIRING)

Eaton Aerospace

Senior Manufacturing Engineer

Lincoln, IL · On-site

$86K - $126K/yr

Eaton's Electrical Sector - ARS division is currently seeking a Senior Manufacturing Engineer. This ... and data security will be protected in accordance with applicable laws. We are committed to ...

Eaton

Senior Manufacturing Engineer

Lincoln, IL · On-site

$86K - $126K/yr

Eaton's Electrical Sector - ARS division is currently seeking a Senior Manufacturing Engineer. This ... and data security will be protected in accordance with applicable laws. We are committed to ...

Eaton

Senior Mechanical Design Engineer

Lincoln, IL · On-site

$86K - $126K/yr

Eaton's ES AMER ARS division is currently seeking a Senior Mechanical Design Engineer. This is an ... and data security will be protected in accordance with applicable laws. We are committed to ...

AllSTEM Connections

Network Engineer

Decatur, IL · On-site

$176K - $187K/yr

Job Title: Senior Network Infrastructure Architect (SDN & SASE Strategy) Role Overview We are ... Ensure security is a primary component of the infrastructure, not an afterthought. Technical ...

AllSTEM Connections

Network Engineer

Decatur, IL · On-site

Job Title: Senior Network Infrastructure Architect (SDN & SASE Strategy) Role Overview We are ... Ensure security is a primary component of the infrastructure, not an afterthought. Technical ...

AllSTEM Connections

Network Engineer

Decatur, IL · On-site

$176K - $187K/yr

Senior Network Infrastructure Architect (SASE & SD-WAN) Role Overview We are seeking a Senior ... Ensure security requirements (encryption, micro-segmentation, policy enforcement) are baked into ...

US Navy

Nuclear Engineer

Lincoln, IL

$96K - $115K/yr

... with senior civilian engineers, naval officers, and technical teams; high expectations for ... Eligibility for a security clearance when required for your rating or designator * Additional ...

US Navy

Nuclear Engineer

Assumption, IL

... with senior civilian engineers, naval officers, and technical teams; high expectations for ... Eligibility for a security clearance when required for your rating or designator * Additional ...

US Navy

Nuclear Engineer

Maroa, IL

$93K - $111K/yr

... with senior civilian engineers, naval officers, and technical teams; high expectations for ... Eligibility for a security clearance when required for your rating or designator * Additional ...

US Navy

Nuclear Engineer

Illiopolis, IL

$95K - $114K/yr

... with senior civilian engineers, naval officers, and technical teams; high expectations for ... Eligibility for a security clearance when required for your rating or designator * Additional ...

US Navy

Nuclear Engineer

Argenta, IL

$95K - $113K/yr

... with senior civilian engineers, naval officers, and technical teams; high expectations for ... Eligibility for a security clearance when required for your rating or designator * Additional ...

US Navy

Nuclear Engineer

Macon, IL

$95K - $114K/yr

... with senior civilian engineers, naval officers, and technical teams; high expectations for ... Eligibility for a security clearance when required for your rating or designator * Additional ...

US Navy

Nuclear Engineer

Mansfield, IL

$92K - $110K/yr

... with senior civilian engineers, naval officers, and technical teams; high expectations for ... Eligibility for a security clearance when required for your rating or designator * Additional ...

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All JobsSecurity Engineer JobsSenior Security Engineer JobsSenior Security Engineer Jobs in Decatur, IL

Senior Security Engineer information

See Decatur, IL salary details

$71.3K

$133K

$180.9K

How much do senior security engineer jobs pay per year?

As of Aug 18, 2026, the average yearly pay for senior security engineer in Decatur, IL is $133,013.00, according to ZipRecruiter salary data. Most workers in this role earn between $111,100.00 and $152,300.00 per year, depending on experience, location, and employer.

What skills and qualifications are needed to be a senior security engineer?

To thrive as a Senior Security Engineer, you need deep expertise in network security, risk assessment, incident response, and a relevant degree or equivalent experience. Familiarity with security tools such as SIEM platforms, firewalls, IDS/IPS, and certifications like CISSP or CEH are typically required. Strong analytical thinking, effective communication, and leadership abilities help you excel in complex security environments. These skills and qualifications are crucial to safeguard organizational assets and maintain robust defense against evolving cyber threats.

How does a senior security engineer collaborate with other departments to enhance organizational security?

Senior Security Engineers frequently work cross-functionally, partnering with IT, software development, and compliance teams to implement security best practices and respond to incidents. They play a key role in conducting security reviews, advising on secure design, and leading incident response efforts. Effective communication and collaboration are essential, as these engineers often translate technical risks into business terms and provide guidance during audits or vulnerability assessments. This collaborative approach helps ensure comprehensive protection across all organizational assets.

What is the difference between Senior Security Engineer vs Security Analyst?

AspectSenior Security EngineerSecurity Analyst
Required CredentialsCertifications like CISSP, CISA, CEH; Bachelor's or Master's in Cybersecurity or related fieldsCertifications like CompTIA Security+, GIAC Security Essentials; Bachelor's in Cybersecurity, Information Technology, or related fields
Work EnvironmentDesigning security systems, implementing security measures, leading security projectsMonitoring security alerts, analyzing threats, conducting security assessments
Employer & Industry UsageUsed in tech companies, finance, healthcare for security infrastructure rolesCommon in various industries for threat detection and incident response

The main difference is that Senior Security Engineers focus on designing and implementing security solutions, while Security Analysts primarily monitor and analyze security threats. Both roles require relevant certifications and work in similar environments, but their responsibilities differ in scope and focus.

What are popular job titles related to Senior Security Engineer jobs in Decatur, IL?

For Senior Security Engineer jobs in Decatur, IL, the most frequently searched job titles are:

What cities near Decatur, IL are hiring for Senior Security Engineer jobs?

Cities near Decatur, IL with the most Senior Security Engineer job openings:

Senior Security Engineer jobs near you
Infographic showing various Senior Security Engineer job openings in Decatur, IL as of August 2026, with employment types broken down into 80% Full Time, 18% Part Time, and 2% Contract. Highlights an 92% Physical, 3% Hybrid, and 5% Remote job distribution, with an average salary of $133,013 per year, or $63.9 per hour.

Senior Endpoint Engineer (R&D Specialist)

A1FED Inc

Texas, IL • Hybrid

$94K - $129K/yr

Full-time

Re-posted 21 days ago

Job description

Location: DHA locations in and around San Antonio, TX

Clearance Required: Public Trust (ADP/IT-II) or Tier 3 Investigation (NACLC) 


The Senior Endpoint Engineer/R&D Specialist is responsible for architecting, developing, and sustaining endpoint management and delivery solutions that meet DoD and DHA operational and security requirements. This includes designing compliant application packaging, security configurations, software deployments, and mobile device solutions across the hybrid DHA ecosystem. The engineer will also lead Tier 3/4 support efforts, drive endpoint automation and modernization initiatives, and provide technical leadership in support of RMF and Zero Trust alignment.


KEY RESPONSIBILITIES


Application Integration & Enterprise Management:

  • Engineer and deploy endpoint management solutions (MECM, Intune, etc.) for both virtual and physical environments.
  • Package, test, and configure baseline applications and images for DHA endpoints.
  • Architect endpoint delivery frameworks to support centralized provisioning, patching, monitoring, and sustainment of services across hybrid (on-prem/cloud/SaaS) environments.
  • Engineer migration strategies from MECM to Intune and develop modern endpoint reporting capabilities.

Endpoint & Identity Security:

  • Validate endpoint compliance with DISA STIGs, DoDI 8510.01 (RMF), and NIST cybersecurity standards.
  • Conduct risk assessments and apply IA controls across all application and OS lifecycle stages.
  • Engineer and maintain endpoint configurations supporting Zero Trust, encryption, data-at-rest (DAR), and continuous monitoring.
  • Maintain artifacts in eMASS, including POA&Ms, risk assessments, and continuous monitoring documentation.

Desktop & Endpoint Engineering:

  • Build and maintain desktop OS images and standard software configurations for enterprise deployment.
  • Engineer solutions supporting task sequences, group policies, and profile/data management.
  • Modernize legacy configurations and support cloud-managed endpoints for improved user experience and performance.
  • Validate application compatibility and implement endpoint enhancements using industry best practices.

Mobile Engineering:

  • Design and implement mobile device provisioning, OS/firmware upgrades, and security configurations.
  • Develop transition plans for migrating MDM platforms while preserving user experience and enterprise controls.

Software Design & System Integration:

  • Research and develop system-level software solutions, including embedded systems and distribution frameworks.
  • Formulate operational specs and conduct in-depth requirement analyses to improve endpoint architectures.

Application Packaging & Automation:

  • Engineer, script, and deliver application packages using enterprise deployment tools.
  • Test application delivery using hypervisors and simulate endpoint software combinations.
  • Ensure compliance with DISA/NIST STIGs in application packaging and configuration management.
  • Maintain application baselines and automate patching and updates.

Preferred Tools & Technologies:

  • Microsoft MECM (SCCM), Intune, MDT, PowerShell
  • Windows Server OS, Windows 10/11
  • Hyper-V, Azure, Entra ID, GPO
  • ActivClient, eMASS, DISA STIG Viewer
  • SCAP Compliance Checker, NIST 800-series
  • Application packaging tools (AdminStudio, WiseScript, etc.)


Education & Certification Requirements (per DoD 8140 Qualification Matrices)

1) Microsoft Certified: Cyber Security Architect Expert or Azure Solutions Architect Expert

2) Any of the following...

  • Academic Education: Bachelor's degree in information technology, Cybersecurity, or a related discipline.
  • OR Baseline: GCLD or CCE or CASP+ or CEH or GLSC or CISSP


Employment Type: FULL_TIME

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