676 security engineer jobs at 243 companies in Littleton, CO
1mo
Save
Mark Applied
Hide
Security Engineer
Denver, Colorado, United States
$114k-$149k/yr HybridFull Time
2+ YOEHands-on security engineering for cloud and DevSecOps: Terraform/CloudFormation, container hardening, CI/CD security, logging/monitoring, NIST/SOC2/CIS frameworks, 2+ years experience preferred.
Terraform, CloudFormation, Docker, Kubernetes, CI/CD, SAST, DAST, SCA, NIST 800-53, SOC 2, CIS Benchmarks, Zero Trust Network Architecture, MITRE ATT&CK
2mo
Save
Mark Applied
Hide
Principal Security Engineer
San Francisco or Denver or New York City
$240k-$310k/yr OnsiteFull Time
10+ YOE10+ years security engineering experience; architecting secure systems, threat modeling, infra-as-code, and translating HIPAA/SOC2/PCI/HITRUST into engineering requirements; strong technical leadership and communication.
3mo
Save
Mark Applied
Hide
Senior Staff Security Engineer - Network Security
Denver or San Francisco or New York City or San Jose
$210k-$270k/yr HybridFull Time
10+ YOE10+ years in security engineering; Cloudflare WAF/DDoS/Zero Trust; Terraform/Crossplane; AWS networking; incident response; AI-native workflows; security certifications.
Cloudflare, Terraform, Crossplane, AWS, CloudFront, WAF, DDoS, Zero Trust, Panther, Wiz, CrowdStrike, Claude Code, MCP-driven tooling, LLM automations
2d
Save
Mark Applied
Hide
System Security Engineer I
Broomfield, Colorado, United States
$65k-$110k/yr OnsiteFull Time
Requires a bachelor's degree in engineering or related technical field, active Top Secret clearance with ability to obtain Top Secret/SCI, Security+ CE, and cybersecurity or systems engineering knowledge.
Model Based Systems Engineering (MBSE), SysML, UML, AWS, NIST, DISA STIGs, CIS benchmarks, DevSecOps
2d
Save
Mark Applied
Hide
System Security Engineer II
Broomfield, Colorado, United States
$79k-$135k/yr OnsiteFull Time
2+ YOEBachelor's degree or equivalent experience, 2+ years of systems security engineering experience, DoD-compliant certification, DoD/IC experience, and current Secret or Top Secret clearance.
Model Based Systems Engineering (MBSE), Zero Trust Architecture (ZTA), AWS, MITRE ATT&CK Framework, Space Attack Research and Tactic Analysis (SPARTA)
1mo
Save
Mark Applied
Hide
Security Engineer
Kansas City or Atlanta or Clayton or New York or Los Angeles or Birmingham or Boston or Chattanooga or Charleston or Dallas or Denver or Edwardsville or Fort Lauderdale or Fort Worth or Houston or Jefferson City or Miami or Nashville or Park City or Philadelphia or Phoenix or Raleigh or Seattle or San Francisco or Salt Lake City or Wilmington or Washington
$120k-$150k/yr RemoteFull Time
2+ YOE2-4 years security engineering experience in on-premises environments, Bachelor's in CS/CE/IS or equivalent, experience with metrics/events/logging, detection engineering, scripting (Python, PowerShell), Microsoft Active Directory and Azure.
Splunk, Microsoft Active Directory, Azure, SIEM, Python, PowerShell, Microsoft Teams, Zoom, MITRE ATT&CK Framework, NIST Cyber Security Framework, CIS Controls
1w
Save
Mark Applied
Hide
Physical Security Engineer
Kansas City or Dallas or Phoenix or Denver
FieldFull Time
Requires technical aptitude, physical security or infrastructure knowledge, ability to lift 50 pounds, work on ladders and in industrial environments, a valid driver's license, and willingness to travel.
Axis Camera Station Pro, Axis, HID, CCTV, RFQ
2mo
Save
Mark Applied
Hide
Principal Engineer, Firmware Security
San Jose or Longmont or Folsom
$161k-$318k/yr OnsiteFull Time
10+ YOEBachelor's degree, 10+ years security firmware experience, applied cryptography and post‑quantum expertise, proficiency in C and Python, experience with SoC/FPGA debugging, and knowledge of storage security standards.
C, Python, Rust, JTAG, FPGA, SoC, Caliptra
2mo
Save
Mark Applied
Hide
Staff Security Engineer
New York City or Denver or Dallas or Miami or United States
$169k-$210k/yr RemoteFull Time
8+ YOE8+ years security engineering experience across application and cloud security, strong AWS security and IaC knowledge, experience in regulated environments (healthcare), ability to read backend code (Ruby, Node.js, Java), and experience with AI/LLM security guidance.
AWS, Terraform, CI/CD, SAML 2.0, OAuth, OIDC, Ruby, Node.js, Java, OWASP Top 10 for LLM Applications, OWASP GenAI Security Project
3mo
Save
Mark Applied
Hide
Senior Security Engineer
Austin or Chicago or Dallas or Denver or Los Angeles or San Diego or San Francisco
$131k-$169k/yr HybridFull Time
4+ YOESenior Security Engineer with 4+ years in security or development; strong communication; cloud and AI experience; hands-on with security tooling and threat modelling.
DotnetCSharp, JavaScript, React, EmberJS, Python, Azure, AWS, GCP, PowerShell, Bash, GitHub Copilot, Burp Suite
1w
Save
Mark Applied
Hide
Engineer I – Information System Security
Broomfield, Colorado, United States
OnsiteFull Time
Bachelor's in engineering or related field, CompTIA Security+ CE, knowledge of NIST standards, MBSE and CAMEO familiarity, SysML/UML experience, willing/eligible to obtain Top Secret clearance, U.S. person required.
CAMEO, SysML, UML, AWS
1w
Save
Mark Applied
Hide
Senior Security Engineer
Lafayette, Colorado, United States
$110k-$130k/yr RemoteFull Time
5+ YOE5+ years security engineering experience; strong cloud, identity, endpoint, vulnerability management, incident response, and DevSecOps skills; PowerShell/Python scripting; SOC 2/NIST familiarity; excellent communication and leadership.
CrowdStrike, Rapid7, InsightIDR, InsightVM, InsightAppSec, MDR, Cisco Umbrella, Cisco Duo, KnowBe4, Cisco Meraki, VPN, Azure, AWS, Microsoft 365, Entra ID, AWS Identity Center, Auth0, SSO, SCIM, Conditional Access, PIM, Snyk, SendGrid, Amazon SES, SPF, DKIM, DMARC, PowerShell, Python, Microsoft Graph, REST APIs, ChatGPT Enterprise, Claude, MCP, Kubernetes
1mo
Save
Mark Applied
Hide
Principal Security Engineer
Englewood or Austin
HybridFull Time
10+ YOE10+ years in security engineering or architecture with 3+ years as a principal/staff-level IC; hands-on with cloud (AWS, Microsoft Azure), IAM, VPC, Okta/Entra ID/Azure AD, EDR/XDR, SIEM, SOAR; knowledge of NIST CSF, ISO 27001, SOC 2; strong communication and risk-to-engineering delivery.
Okta, Microsoft Entra ID, Microsoft Azure AD, AWS, Microsoft Azure, IAM, VPC, EDR, XDR, SIEM, SOAR, NIST CSF, ISO 27001, SOC 2, FAA, EASA, DoD, CMMC
2w
Save
Mark Applied
Hide
AWS Security Engineer - Senior Associate
New York City or Tampa or Denver or Chicago or Boston or Cleveland or Philadelphia or Houston
$77k-$202k/yr OnsiteFull Time
2+ YOEBachelor's degree required, minimum 2 years' experience, proficiency with AWS CloudFormation, Terraform, Ansible, Puppet, GitHub, Jenkins, and Python; security incident management and vulnerability assessment experience.
AWS CloudFormation, Terraform, Ansible, Puppet, GitHub, Jenkins, Python
3mo
Save
Mark Applied
Hide
Security Engineer - Cloud Security Controls
Strongsville or Denver or Phoenix or Cleveland or Birmingham or Dallas
$80k-$185k/yr HybridFull Time
5+ YOECloud security controls in AWS/Azure, CSPM, CI/CD, scripting, and strong communication.
AWS, Azure, CSPM, CI/CD, Python, PowerShell, Bash, Git
3w
Save
Mark Applied
Hide
Senior Cloud & Security Engineer
Denver, Colorado, United States
$116k-$158k/yr OnsiteFull Time
7+ YOE7+ years cloud or security engineering experience with Azure and Microsoft 365, scripting with PowerShell/Python, cloud governance, identity and security technologies, and experience mentoring engineers.
Azure, Microsoft 365, Microsoft E5, Microsoft E7, Entra ID, Defender, Intune, Purview, Security Copilot, Microsoft 365 Copilot, Entra Suite, PowerShell, Python
3w
Save
Mark Applied
Hide
Intermediate Cyber Security Engineer
Cedar Rapids or Denver or Philadelphia
$70k-$84k/yr HybridFull Time
1+ YOE1+ years cyber security engineering experience; knowledge of application security, vulnerability management, SDLC, and security frameworks; bachelor’s in related field or equivalent; certifications desirable (OSCP,CISSP,CEH,Security+/CySA/CASP).
NIST CSF, SIEM, Rapid7, ServiceNow Vulnerability Response (VR), Synk, CrowdStrike, ServiceNow, JIRA
2mo
Save
Mark Applied
Hide
Mission Security Engineer
Denver or Long Beach
$115k-$180k/yr OnsiteFull Time
3+ YOE3–5 years in technical IT/security engineering; TS/SCI with poly; DoD 8140 IAT II; RMF/NIST 800-53 knowledge; experience with STIGs, cloud, DevSecOps
RMF, NIST 800-53, DISA STIG, DevSecOps, Kubernetes, EKS, AKS, AWS, Azure, SIEM, EDR, SCA, IaC, CI/CD, Zero Trust
1w
Save
Mark Applied
Hide
Senior Cloud Security Engineer
Atlanta or Austin or Boston or Chicago or Denver or New York City or United States or San Francisco or London or Sydney or Lisbon
$141k-$221k/yr RemoteFull Time
5+ YOE5+ years in cloud security, SRE, DevOps, DevSecOps, or infrastructure engineering; Kubernetes, AWS, Terraform, GitHub or GitLab, Python or Go, and cloud security expertise required.
Kubernetes, Helm, ArgoCD, AWS, AWS Organizations, AWS Identity (SSO), Identity and Access Management (IAM), Service Control Policies (SCPs), Virtual Private Clouds, Elastic Load Balancers, AWS CloudTrail, Security Groups, Terraform, GitHub, GitLab, Python, Go, OPA, Kyverno, Datadog, Prometheus, Grafana, AWS EKS, Panther SIEM, Jupyter
2mo
Save
Mark Applied
Hide
Information Security Engineer
Englewood or Boston or Los Angeles or New Kensington or Rochester or Rock Hill or Denver or Framingham or Merrimack or Kalamazoo or Cleveland
RemoteFull Time
5+ YOE5+ years security experience; strong Microsoft 365 Security, Azure Sentinel; IT security governance; manufacturing/defense exposure preferred.
Microsoft 365 Security and Compliance, Azure, Microsoft Sentinel, Microsoft Purview
Explore Jobs