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15 security intern jobs at 13 companies in Boulder, CO

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2026 Fall Intern - Inflight Experience Operations Strategy
Denver, Colorado, United States
$20-$24/hr OnsiteFull Time
Frontier Airlines
Frontier AirlinesNasdaq: ULCC: Provides low-fare passenger air transportation services across the Americas.
Currently pursuing a degree in business/aviation/operations/engineering/computer science; must pass FAA criminal background checks and be able to secure airport/SIDA or customs badges; strong communication and MS Office skills.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Outlook
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1mo
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DEN International Airport Security Officer
Denver, Colorado, United States
$23/hr OnsiteFull Time
ACTS-Aviation Security
ACTS-Aviation Security: Provides aviation security screening and protection services for airports.
High school diploma/GED, valid driver\u0000s license, ability to pass TSA Security Threat Assessment and criminal history check, able to stand/walk full shifts and lift 25 lb, customer service and communication skills; 2 years security/military/law enforcement preferred.
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1mo
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Catering Security Agent - Denver International Airport
Denver, Colorado, United States
$22/hr OnsiteFull Time
ACTS-Aviation Security
ACTS-Aviation Security: Provides aviation security screening and protection services for airports.
High school/GED required; must be at least 18 and U.S. citizen, hold a valid U.S. driver’s license, complete FBI fingerprinting/SIDA badge and 10-year background check, able to lift 30 lbs, work varied shifts including weekends and holidays, English proficiency.
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2mo
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Director, National Security-Trade Controls
Greenwood Village, Colorado, United States
$130k-$175k/yr OnsiteFull Time
Alvarez & Marsal
Alvarez & Marsal: Provides management consulting, restructuring, and business advisory services.
Bachelor’s degree required; advanced degree preferred; international trade and compliance experience; strong research/writing; proficiency with MS Office and collaboration tools.
MS Teams, Microsoft Word, Microsoft Excel, PowerPoint, Microsoft Project, SharePoint
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2mo
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Senior Manager, Engineering - Platform Security
Denver or New York City or San Francisco
$228k-$274k/yr HybridFull Time
Fastly
FastlyNYSE: FSLY: Provides edge cloud platform for content delivery and cybersecurity.
4+ YOE4+ Mgmt4+ years managing Platform or Site Reliability Engineering teams; 10+ years distributed systems; experience with secrets/workload identity; large-scale production infra in cloud and on-prem; Linux internals; Python or Go a plus.
Kubernetes, PKI, Chef, Python, Go, Terraform, HashiCorp Vault, SPIFFE, SPIRE, Linux
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4w
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Cyber Researcher, Attack Emulation (Senior / Principal)
Burlington or Golden or Israel
$180k-$220k/yr RemoteFull Time
Pentera
Pentera: Automated security validation and penetration testing platform
5+ YOE5+ years security research/penetration testing, 3+ years Python, strong Windows/Linux internals, reverse engineering, cloud (AWS/Azure), and proficiency with security tools (Metasploit, Nmap, Burp).
Python, Metasploit, Impacket, Nmap, Burp, IDA, Ghidra, WinDBG, Radare2, Windows, Linux, AWS, Azure
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4w
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Protection Specialist, Executive Services, NA
Denver, Colorado, United States
$130k-$140k/yr OnsiteFull Time
Vantage Data Centers
Vantage Data Centers: Provides hyperscale data center campuses for cloud and AI providers.
5+ YOE5+ years executive protection or corporate security experience; experience with close protection, travel security, advances, and OSINT; ability to support domestic and international travel up to ~50%+, strong communication, judgment, and situational awareness.
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1mo
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Shipping Manager
Littleton, Colorado, United States
$95k-$167k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Manage a shipping/traffic team, oversee domestic and international shipments, ensure DG/HazMat compliance, negotiate carriers, maintain audit-compliant systems, and obtain/maintain TS/SCI security clearance.
SAP, AS9100, IATA, ICAO, 49CFR, BigJoe
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1mo
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Quality Engineer II
Centennial, Colorado, United States
$81k-$111k/yr OnsiteFull Time
Sierra Space
Sierra Space: Develops spacecraft and infrastructure for orbital and space transportation
2+ YOEBachelor's degree or equivalent, typically 2+ years related experience, basic RCCA/CAPA knowledge, internal audit training, ability to obtain and maintain U.S. security clearance; familiarity with GD&T, IPC, and NASA requirements preferred.
Geometric Dimensioning and Tolerancing (GD&T), IPC, NASA, ISO 9001, Failure Mode and Effects Analysis (FMEA), Statistical Process Control (SPC)
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1mo
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Vice President, Business Development
Berthoud, Colorado, United States
$280k-$330k/yr OnsiteFull Time
Ursa Major
Ursa Major: Designs and manufactures rocket engines and aerospace propulsion systems.
12+ YOESenior sales leader with minimum 12 years in aerospace/defense sales or capture, proven federal procurement success, FAR/DFARS knowledge, team leadership, ability to obtain U.S. security clearance, onsite in Berthoud CO with extensive domestic and some international travel.
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1mo
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Cyber Researcher, Attack Emulation (Senior / Principal)
Denver or Golden or Colorado or Israel
$180k-$220k/yr RemoteFull Time
Pentera
Pentera: Automated security validation and penetration testing platform
5+ YOE5+ years in security research or penetration testing, strong Windows internals and networking, 3+ years Python development, experience with Metasploit/Impacket/Nmap/Burp, reverse engineering (IDA/Ghidra/WinDbg/Radare2), cloud (AWS/Azure), and applied AI/ML concepts.
Python, Metasploit, Impacket, Nmap, Burp, IDA, Ghidra, WinDbg, Radare2, AWS, Azure, Windows, Linux
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2mo
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Director of Internal Audit, Technology
Denver, Colorado, United States
$149k-$182k/yr OnsiteFull Time
Zayo Group
Zayo Group: Provides high-capacity fiber networks and communications infrastructure.
10+ YOE10+ years IT/cybersecurity audit/risk/assurance; leadership experience; bachelor’s in Computer Engineering, Information Systems, or Computer Science.
Cloud platforms, IAM, Network security, Data protection, Audit methodology, Analytics, Automation
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2w
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International Trust Operations Manager
Ireland or Seattle or Vancouver or Austin or Boulder or Ankeny or Reading or Ho Chi Minh City
OnsiteFull Time
Absolute Security
Absolute Security: Provides self-healing endpoint security and zero trust networking solutions.
3+ YOE3–5 years GRC/audit/compliance or trust operations experience, familiarity with SOC 2/ISO 27001, GDPR, customer security questionnaires, risk and third-party assessments, strong communication and audit support skills.
Claude, Copilot
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19h
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Desktop Support Technician - Denver ( DEN ) International Airport
Denver, Colorado, United States
$50k-$52k/yr OnsiteFull Time
ESP Global Services
ESP Global Services: Provides global managed IT support and infrastructure services.
1+ YOE1-3 years helpdesk/desktop support experience with Windows and Mac, ability to troubleshoot hardware/software/networking and perform onboarding/offboarding tasks; CompTIA A+/Network+/Security+ or equivalent.
Windows, Mac, Android, iOS, IPAD, DSS
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2w
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College Financial Representative, Internship Program
Boulder, Colorado, United States
$500-$1k/yr OnsiteIntern
Northwestern Mutual
Northwestern Mutual: Provides life insurance, wealth management, and financial planning services.
0+ YOEFull-time college student (juniors/seniors preferred), entrepreneurial and sales interest, strong time-management and communication, eligible for state risk product licensing and securities registrations, background check required.
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