17 cyber security engineer jobs at 7 companies in O'Fallon, MO
3w
Save
Mark Applied
Hide
Sr. Cyber Security Engineer
St. Louis, Missouri, United States
$81k-$157k/yr FieldFull Time
5+ YOE5+ years cybersecurity experience, 5+ years operational security support, SOAR and content management experience, security certifications, bachelor's in CS/InfoSec preferred, Python and OS proficiency.
SIEM, MEDR, SOAR, Python, Microsoft Windows, RHES, CentOS, Ubuntu Linux, MacOS
3w
Save
Mark Applied
Hide
Sr. Cyber Security Engineer
St. Louis, Missouri, United States
$81k-$157k/yr RemoteFull Time
5+ YOE5+ years cybersecurity experience, SOC/MSSP background, content development experience, industry security certifications, bachelor's degree preferred, strong communication and independent work skills.
SIEM, MEDR, SOAR, Python, Microsoft Windows, RHES, CentOS, Ubuntu Linux, MacOS
2mo
Save
Mark Applied
Hide
Cyber Security Engineer
Springfield or Vienna or St. Louis
OnsiteFull Time
5+ YOEBachelor’s degree with 5+ years of experience; DoD 8570 IAT Level II or higher; RMF/A&A/POA&M/ATO documentation experience; vulnerability scanning; Linux/Windows hardening; NIST guidance knowledge.
RMF, A&A, POA&M, ATO, XACTA, eMASS, ACAS, IAVM, STIGs, NIST 800-53, CNSSI 1253, Python, Java, React, DevSecOps, Linux, Windows
2mo
Save
Mark Applied
Hide
Cyber Security Engineer - NSS Tools
St. Louis, Missouri, United States
$75k-$158k/yr OnsiteFull Time
7+ YOEActive TS/SCI clearance, DOD 8570 IAT II and CSSP Infrastructure Support, 7+ years experience, Linux system administration, shell scripting, logging and networking, familiarity with AWS, Ansible, and GitHub/GitLab; Bachelor's degree required.
Linux, shell scripting, tcpdump, Traceroute, Ping, Netstat, nslookup, EC2, S3, CloudFormation, Terraform, Ansible, GitHub, GitLab, SEIM
2mo
Save
Mark Applied
Hide
Geospatial Cyber Security Engineer – Multiple Positions at Junior/Mid/Senior Levels
St. Louis or St. Charles or Virginia or Sun Prairie
OnsiteFull Time
5+ YOETop Secret/SCI required; Bachelor's in CS/Engineering; 5+ years experience; RMF/A&A, NIST 800-53, XACTA/eMASS, ACAS, Linux/Windows hardening, vulnerability management, strong communication.
XACTA, eMASS, ACAS, Python, Java, React, Jira, Confluence, RedHat/CentOS
2mo
Save
Mark Applied
Hide
Geospatial Cyber Security Engineer – Multiple Positions at Junior/Mid/Senior Levels
Springfield or Vienna or St. Louis
OnsiteFull Time
5+ YOEActive TS/SCI clearance, bachelor\u0002s degree in a technical field, 5+ years relevant experience, DoD 8570 IAT II or higher, RMF/A&A and vulnerability scanning experience, knowledge of NIST 800-53 and STIGs.
XACTA, eMASS, ACAS, Python, Java, React, RedHat, CentOS, Jira, Confluence
2mo
Save
Mark Applied
Hide
System Engineer- Cyber Security Engineering Focus
Redlands or St. Louis or Vienna
$121k-$198k/yr OnsiteFull Time
8+ YOE8+ years in RMF/A&A, vulnerability scanning, system hardening for Linux/Windows, experience with RMF tools (XACTA/eMASS), DoD 8570 certification, active Top Secret/SCI clearance, and a relevant bachelor's degree.
RMF, XACTA, eMASS, ACAS, IAVM, STIGs, Red Hat, CentOS, Windows, Python, Java, React, Jira, Confluence, NIST SP 800-53, CNSSI 1253, NIST SP 800-171
2mo
Save
Mark Applied
Hide
System Engineer- Cyber Security Engineering Focus
Redlands or St. Louis or Vienna
$121k-$198k/yr OnsiteFull Time
8+ YOE8+ years experience with RMF/A&A, vulnerability scanning (ACAS), STIG-based hardening for Linux/Windows, NIST 800-series knowledge, DoD 8570 IAT Level II+ certs, active Top Secret/SCI clearance, and a bachelor’s in CS/IT/Cyber/STEM.
XACTA, eMASS, ACAS, STIGs, Linux, Windows, Red Hat, CentOS, Python, Java, React, Jira, Confluence
2mo
Save
Mark Applied
Hide
Endpoint Security Engineer III
Springfield or St. Louis
$75k-$158k/yr OnsiteFull Time
5+ YOETS/SCI clearance required, bachelor's in engineering/computer science preferred (experience may substitute), 5+ years cyber security experience, DoD 8570 IAT Level II, CSSP Infrastructure Support certification (within 6 months), Carbon Black EDR, Linux, incident response, enterprise networks.
Carbon Black Endpoint Detection and Response (EDR), Linux, Windows Enterprise Active Directory (AD), VMware, AWS
2mo
Save
Mark Applied
Hide
Endpoint Security Engineer III
Springfield or St. Louis
$75k-$158k/yr OnsiteFull Time
5+ YOETS/SCI clearance required, bachelor's degree (or equivalent experience), 5+ years cyber security experience, DoD 8570 IAT II, CSSP Infrastructure Support certification within 6 months, Carbon Black EDR, incident response, Linux administration, enterprise network experience.
Carbon Black Endpoint Detection and Response (EDR), Linux, AWS, VMWare virtualization, Windows Enterprise Active Directory (AD)
2mo
Save
Mark Applied
Hide
System Engineer- Cyber Security Engineering Focus
Redlands or St. Louis or Washington or Vienna
$121k-$198k/yr OnsiteFull Time
8+ YOE8+ years experience applying RMF/A&A, developing ATO documentation (XACTA/eMASS), conducting vulnerability scans (ACAS), securing Linux/Windows with STIGs, and supporting incident response; Top Secret/SCI clearance and Bachelor’s in a STEM field required.
XACTA, eMASS, ACAS, STIGs, Linux, Windows, Red Hat, CentOS, Python, Java, React, Jira, Confluence
1w
Save
Mark Applied
Hide
Endpoint Security Engineer III - Nessus
St. Louis or Springfield
$75k-$158k/yr OnsiteFull Time
10+ YOETS/SCI clearance, DoD 8570 IAT Level II, CSSP Infrastructure Support within 6 months, 10+ years cyber security experience, Tenable and Linux administration, bachelor's degree (or equivalent experience).
Tenable Security Center, Tenable Nessus, Tenable Nessus Manager, Tenable Suite, Linux, Python, PowerShell
1w
Save
Mark Applied
Hide
Endpoint Security Engineer III - Nessus
Springfield or St. Louis
$75k-$158k/yr OnsiteFull Time
10+ YOETS/SCI clearance, DoD 8570 IAT II, CSSP Infrastructure Support within 6 months, Bachelor's (or equivalent) and 10 years cyber experience, Tenable Suite and Linux expertise, polygraph eligible.
Tenable Security Center, Tenable Nessus Scanners, Tenable Nessus Manager, Linux, Python, PowerShell
2mo
Save
Mark Applied
Hide
Technical Consultant- Cyber Security Engineering
Redlands or St. Louis or Vienna
$84k-$142k/yr OnsiteFull Time
5+ YOE5+ years experience with RMF/A&A, ATO/POA&M documentation (XACTA/eMASS), vulnerability scanning (ACAS), STIG-based hardening for Linux/Windows, DoD 8570 IAT II+ certification, active Top Secret/SCI clearance, and a bachelor’s in a STEM field.
XACTA, eMASS, ACAS, STIGs, Linux, Windows, Red Hat, CentOS, Python, Java, React, Jira, Confluence
3mo
Save
Mark Applied
Hide
Advanced Cybersecurity Analytics Engineer III
St. Louis, Missouri, United States
$75k-$158k/yr OnsiteFull Time
8+ YOEUS citizen with TS/SCI; 8+ years advanced cyber security analytics; DoD 8140.01/DoD 8570.01-M IAT Level III and CSSP Analyst; experience with data mining/queries in a SIEM; signature development and tuning; network protocol analysis; regex proficiency.
SIEM, Python, Bash, PowerShell, Regex
2mo
Save
Mark Applied
Hide
Strategic Talent Pipeline - Upcoming NGA Initiatives
St Louis or Arnold
$80k-$128k/yr OnsiteFull Time
0+ YOEBachelor’s degree in engineering, math, physics, or related field; 0-6+ years experience; ability to obtain TS/SCI with poly; willing to work at a customer facility; strong analytical, communication, and teamwork skills.
AI/ML, Cloud Computing, Cyber Security, Modeling and Simulation, Network Engineering, IT Infrastructure Architecture, Change/Configuration Management, Hyperspectral Imaging
2mo
Save
Mark Applied
Hide
Strategic Talent Pipeline - Upcoming NGA Initiatives
St Louis or Arnold
$135k-$216k/yr OnsiteFull Time
12+ YOEBachelor's in engineering, math, physics, or related technical field; 12+ years of relevant experience; ability to obtain TS/SCI with polygraph; willingness to work at a customer facility; strong analytical, problem-solving, and communication skills; ability to build client relationships; independent and team work capability.
Cloud Computing, Cybersecurity, AI/ML, Network Engineering, Modeling and Simulation, Software and Systems Engineering, Configuration Management
Explore Jobs
Expand Your Job Search
Top Cities Near O'Fallon for Cyber Security Engineer
- Cyber Security Engineer jobs in St. Louis, MO
- Cyber Security Engineer jobs in Saint Charles, MO
- Cyber Security Engineer jobs in Saint Peters, MO
- Cyber Security Engineer jobs in Florissant, MO
- Cyber Security Engineer jobs in Chesterfield, MO
- Cyber Security Engineer jobs in Belleville, IL
- Cyber Security Engineer jobs in Wildwood, MO
- Cyber Security Engineer jobs in Wentzville, MO
- Cyber Security Engineer jobs in University City, MO
- Cyber Security Engineer jobs in Ballwin, MO
- Cyber Security Engineer jobs in Granite City, IL
- Cyber Security Engineer jobs in O'Fallon, IL
- Cyber Security Engineer jobs in Kirkwood, MO
- Cyber Security Engineer jobs in Maryland Heights, MO
- Cyber Security Engineer jobs in East Saint Louis, IL
- Cyber Security Engineer jobs in Alton, IL
- Cyber Security Engineer jobs in Hazelwood, MO
- Cyber Security Engineer jobs in Edwardsville, IL
- Cyber Security Engineer jobs in Collinsville, IL
- Cyber Security Engineer jobs in Webster Groves, MO