435 senior security engineer jobs at 183 companies in Frederick, CO

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Senior Security Engineer
Austin or Chicago or Dallas or Denver or Los Angeles or San Diego or San Francisco
$131k-$169k/yr HybridFull Time
Karbon
Karbon: Practice management software for accounting firms.
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
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Senior Staff Security Engineer - Network Security
Denver or San Francisco or New York City or San Jose
$210k-$270k/yr HybridFull Time
Gusto
Gusto: Cloud-based payroll and HR software for small businesses.
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
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Principal Security Engineer
San Francisco or Denver or New York City
$240k-$310k/yr OnsiteFull Time
Candid Health
Candid Health: Automates medical billing and revenue cycle management for healthcare providers.
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.
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Senior Application Security Engineer
Broomfield, Colorado, United States
HybridFull Time
Recurly
Recurly: Automates subscription billing and management for recurring revenue businesses.
Experience developing in multiple languages, DevSecOps collaboration, managing bug bounty programs, integrating AI/ML into security pipelines, using SAST/DAST/SCA tools, Burp Suite, Terraform, Graylog, GCP, and Kubernetes.
Ruby, Go, Rust, JavaScript, Cloud Armor WAF, Static Application Security Testing (SAST), Dynamic Application Security Testing (DAST), Software Composition Analysis (SCA), Bug Bounty Programs, Containers, Git, Terraform, Graylog, GCP, Kubernetes, Burp Suite, AI/ML
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Senior Cloud & Security Engineer
Denver, Colorado, United States
$116k-$158k/yr OnsiteFull Time
Armanino
Armanino: Provides accounting, tax, and consulting services to diverse organizations.
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
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Senior IT Security Engineer - Mission System Cybersecurity & Compliance
Golden, Colorado, United States
$100k-$120k/yr OnsiteFull Time
Lunar Outpost
Lunar Outpost: Develops autonomous robotic systems and rovers for lunar exploration.
4+ YOELead security controls and compliance, develop architecture, manage audits, and align with NIST/ITAR frameworks; experience with government contracting and cloud security.
NIST 800-171, NIST 800-53, FARS/DFARS, ITAR, SSP, POA&M, SCTM, GRC, SIEM, DLP, Cloud security, RMF, ISO
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Senior Platform Engineer, Security
Denver or United States
$180k-$235k/yr HybridFull Time
Simplesense
Simplesense: Software platform protecting critical infrastructure from cyber attacks.
5+ YOE5+ years platform/DevSecOps experience with IaC, AWS security, enterprise security tooling, NIST familiarity, US citizenship, DoD 8140 qualification, and ability to obtain Secret clearance.
Cloudformation, Terraform, OpenTofu, Ansible, SecurityHub, GuardDuty, Inspector, Nozomi
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Senior IT Security Engineer
Linthicum or Phoenix or Tampa or Denver or Cicero
$90k-$120k/yr OnsiteFull Time
Breakthru Beverage Group
Breakthru Beverage Group: Distributes alcoholic and non-alcoholic beverages to North American businesses.
7+ YOE7+ years IT security experience, CISSP required; expertise in networking, Windows and Linux administration, AWS/Azure, IaC (HCL/YAML/JSON), scripting (PowerShell, Python, Go, Shell), incident response, risk management, and security tooling.
firewalls, SIEM, PAM, ZTN, IdP, IAM, CSPM, DLP, Vulnerability/Exposure Management, CIEM, DevSecOps, SSDLC, AWS, Azure, HCL, YAML, JSON, PowerShell, Python, Go, Shell
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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
PwC
PwC: Providing audit, tax, and management consulting services to businesses.
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
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Staff Security Engineer
New York City or Denver or Dallas or Miami or United States
$169k-$210k/yr RemoteFull Time
Rightway
Rightway: Healthcare navigation and transparent pharmacy benefit management services.
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
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Sr. Security Engineer/Architect
Denver, Colorado, United States
$170k-$200k/yr OnsiteFull Time
Brownstein Hyatt Farber Schreck
Brownstein Hyatt Farber Schreck: Full-service law and government relations firm.
10+ YOE10+ years in information security with senior hands-on experience in security architecture, detection engineering, incident response; deep Microsoft security stack mastery, KQL, PowerShell and Python, relevant certifications (CISSP, GCIH, OSCP, etc.).
Microsoft Entra ID, Conditional Access, Microsoft Azure, Microsoft Defender, Microsoft Defender XDR Advanced Hunting, Microsoft 365, Microsoft Sentinel, Microsoft Purview, Microsoft Secure Score, KQL, Logic Apps, PowerShell, Python, SIEM, UEBA, MITRE ATT&CK
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Senior Systems Engineer – Security Integration
Aurora, Colorado, United States
$152k-$205k/yr OnsiteFull Time
Four Sea Group
Four Sea Group: Technical mission support and software engineering for aerospace.
6+ YOEBachelor's in a technical field (or equivalent experience), 6+ years systems/integration/security engineering experience, active TS/SCI with Full Scope Polygraph, experience with privileged-user implementation, firewalls and logging controls, strong communication skills.
firewalls, audit logging, filtering technologies, cross-domain technologies
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Senior Software Engineer
Littleton, Colorado, United States
$120k-$150k/yr OnsiteFull Time
OASYS
OASYS: Provides technology services and products for government and defense.
Full-time Senior Software Engineer with C/C++ experience; US citizen; security clearance required.
C, C++
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Senior Application Security Engineering Lead
Boulder, Colorado, United States
$155k-$185k/yr OnsiteFull Time
SciTec
SciTec: Provides advanced remote sensing and missile defense technology solutions.
8+ YOEBachelor's plus 8+ years cybersecurity/software experience (or equivalent), 2+ years application security, source-code analysis, secure SD practices, ability to obtain DoD Secret clearance and meet DoD 8140.01, strong communication and collaboration skills.
C++, Python, JavaScript, Rust, Coverity, Klocwork, SonarQube, Snyk, Sonatype, Anchore, JFrog Xray, AFL, AFL++, honggfuzz, strace, eBPF, Ghidra, IDA Pro, MITRE ATT&CK
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Principal Security Engineer
Englewood or Austin
HybridFull Time
Jeppesen ForeFlight
Jeppesen ForeFlight: Provides integrated software and data solutions for aviation flight planning.
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
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Senior Security Compliance Engineer
Boston or Denver
$120k-$180k/yr OnsiteFull Time
Klaviyo
KlaviyoNYSE: KVYO: Software platform for automated e-commerce marketing and customer data.
3+ YOE3+ years security compliance/GRC engineering experience with automation focus; experience with SOC 2, ISO 27001/27017, PCI or SOX ITGCs; proficiency with cloud (AWS, Kubernetes), scripting (Python, Go, SQL), REST APIs, and compliance automation platforms.
Drata, Vanta, Anecdotes, HyperProof, AWS, Kubernetes, Python, Go, SQL, REST APIs, CI/CD
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Senior Systems Engineer
Littleton, Colorado, United States
$78k-$145k/yr OnsiteFull Time
Trident Systems
Trident Systems: Develops high-performance electronics for space and defense.
6+ YOEBachelor in STEM; 6+ yrs with BA or 4+ with MS; technical lead experience; secures systems approach; U.S. person.
Xilinx Zynq, Xilinx Versal, PCB design, CAD tools, MATLAB, Simulink, MBSE, STK, Power analysis tools, Altium, SOLIDWORKS
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Principal Security Engineer
Loveland, Colorado, United States
$120k-$180k/yr HybridFull Time
Patterson Companies
Patterson Companies: Distributes medical supplies for dental and animal health practices.
8+ YOE8+ years IT/cybersecurity experience with minimum 6 years cloud engineering; deep Azure expertise, Microsoft E5/Purview/Defender experience, data protection and DLP knowledge, scripting/automation (Python, PowerShell, Azure CLI); security certification preferred.
Azure, Microsoft Purview Data Lifecycle Management, Microsoft Defender, MS Fabric, Microsoft E5, Python, PowerShell, Azure CLI
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Security Engineer - Cloud Security Controls
Strongsville or Denver or Phoenix or Cleveland or Birmingham or Dallas
$80k-$185k/yr HybridFull Time
PNC Financial Services
PNC Financial ServicesNYSE: PNC: Provides banking, lending, and investment services to customers.
5+ YOECloud security controls in AWS/Azure, CSPM, CI/CD, scripting, and strong communication.
AWS, Azure, CSPM, CI/CD, Python, PowerShell, Bash, Git
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Senior Information Systems Security Engineer
Boulder, Colorado, United States
$112k-$196k/yr OnsiteFull Time
Parsons
ParsonsNYSE: PSN: Provides engineering and technology services for infrastructure and defense.
5+ YOEActive Top Secret clearance,5+ years relevant experience,Bachelor's or equivalent experience,Security+ required,RMF/ATO experience,Windows and Red Hat administration,security toolset operation,and vulnerability scanning.
Windows, Red Hat Enterprise Linux, Symantec, Logrhythm, Chef, Puppet, Ansible, Docker, Kubernetes, Nessus, OpenVAS, SCC