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36 staff security engineer jobs at 25 companies in Longmont, CO

3mo
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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: Gusto is a payroll, benefits, and human-resources software platform serving small and medium-sized 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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2mo
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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: Private healthcare technology providing care navigation and pharmacy benefits management to employers and members.
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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1d
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Staff Cloud Security Engineer
Westminster or Longmont
$105k-$154k/yr OnsiteFull Time
Vantor
Vantor: Forging the new frontier of spatial intelligence.
5+ YOEU.S. citizen with active Secret clearance, Security+, 5 years of DevOps, software, or infrastructure engineering experience, cloud experience, Terraform and K8S experience, and a bachelor's degree or equivalent experience.
Terraform, K8S, Jenkins, Python, Java, CI/CD
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3mo
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Staff Cloud Security Engineer
Longmont or Westminster
$102k-$150k/yr OnsiteFull Time
Vantor
Vantor: Providing AI-powered spatial intelligence and high-resolution Earth observation.
5+ YOE5 years in DevOps/software/infrastructure engineering; US citizen with SECRET clearance; Cloud/CI/CD experience; Terraform/Kubernetes; Python/Java preferred.
Terraform, Kubernetes, CI/CD, Python, Java
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2mo
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Principal Security Engineer
Englewood or Austin
HybridFull Time
Jeppesen
Jeppesen: Private aviation software providing flight planning, navigation data, and operations tools to pilots, airlines, and fleets.
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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1mo
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Staff Turbomachinery Engineer
Berthoud, Colorado, United States
$132k-$165k/yr OnsiteFull Time
Ursa Major
Ursa Major: A privately held aerospace-defense delivering hypersonics, solid rocket motors, and space mobility systems.
8+ YOEB.S. in mechanical or aerospace engineering, 8+ years turbomachinery experience, 5+ years CAD (Siemens NX or PTC Creo), experience with ANSYS/CFD, U.S. person and eligible for security clearance.
Siemens NX, PTC Creo, ANSYS FEA, CFX, Fluent
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1w
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Staff Network Engineer
Broomfield, Colorado, United States
$112k-$168k/yr HybridFull Time
Stem, Inc.
Stem, Inc.NYSE: STEM: Public clean-energy software and services helping asset owners operate solar, storage, and hybrid energy projects.
8+ YOEBachelor’s degree or equivalent and 8+ years of network engineering experience, including OT/ICS security architecture, NERC CIP, IEC 62443, firewalls, SIEM/IDS, scripting, vendor evaluations, and technical leadership.
PowerTrack, Palo Alto, Moxa, SIEM, Syslog, Synology NAS, DNP3, Modbus, IEC 61850, IEC 60870, OPC UA, WSUS, Inductive Automation Ignition, SQL, InfluxDB, Python, PowerShell
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2mo
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Staff Mission COMSEC Engineer
Denver or Long Beach
$160k-$265k/yr OnsiteFull Time
True Anomaly
True Anomaly: Delivering decisive capabilities for space superiority and security.
10+ YOE10+ years in security architecture or encryption engineering; TS/SCI with eligibility; DoD 8140 IAT Level III; TEMPEST for space; NSA Type 1 crypto; space system experience; Bachelor degree in CS/Cybersecurity/Engineering or related field.
TEMPEST, NSA Type 1 cryptographic solutions, NIST 800-53, CNSSI 1253, ITAR
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1mo
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Staff Data Engineer
Denver or San Francisco
$190k-$264k/yr HybridFull Time
Checkr
Checkr: AI verification platform providing background, identity, employment, mortgage, tenant, and trust checks for businesses and individuals.
10+ YOE10+ years building scalable data platforms; expert PySpark, Python, SQL; experience with Kafka, Spark, Iceberg, data lakes, AWS; strong data modeling and security awareness.
PySpark, Python, SQL, MongoDB, Kafka, Spark, Iceberg, EKS, EMR, Serverless, Glue, Athena, S3, Databricks, Snowflake
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Staff Radar Systems Engineer
Denver, Colorado, United States
OnsiteFull Time
LeoLabs
LeoLabs: American aerospace providing radar-based orbital intelligence and space situational awareness to government and commercial operators.
10+ YOE10+ years radar/sensor systems engineering experience, bachelor's in a technical discipline, strong radar/RF/signal processing knowledge, requirements and test development, US citizenship and ability to obtain security clearance.
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2mo
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Staff Electrical Engineer
Denver, Colorado, United States
OnsiteFull Time
Performance Drone Works
Performance Drone Works: American defense technology mass-manufacturing aerial robotic systems and software for defense and public-safety customers.
7+ YOEBachelor's degree plus 7+ years electronics development with technical leadership; expert Altium Designer; deep analog, digital, power electronics, embedded systems, high-speed design; signal/power integrity, EMI/EMC, reliability; ability to obtain U.S. security clearance.
Altium Designer
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2mo
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Staff Software Developer
Boulder, Colorado, United States
$128k-$229k/yr OnsiteFull Time
General Atomics Aeronautical Systems, Inc.
General Atomics Aeronautical Systems, Inc.: U.S. private defense contractor designing unmanned aircraft, radars, and mission systems for military, security, and civil customers.
7+ YOERequires advanced software development experience (C++, Linux, multithreading, TCP/UDP sockets), 7+ years' experience (varies by degree), ability to obtain DoD security clearance, and strong communication and testing skills.
C++, TCP, UDP, Linux, GitLab, Git, Bash, Python, ZYNQ Ultrascale, Xilinx SDK, PetaLinux, SPI, I2C, UART, Ethernet, Unit Testing Tools
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1mo
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Staff / Sr. Electro-Optical Engineer
Longmont, Colorado, United States
$150k-$190k/yr OnsiteFull Time
nLIGHT DEFENSE Systems
nLIGHT DEFENSE SystemsNASDAQ: LASR: Public high-power semiconductor and fiber-laser manufacturer serving defense, sensing, and advanced-manufacturing customers.
8+ YOE8+ years electro-optical experience, Bachelor\u0002s in engineering/science, DoD security clearance eligibility, expertise with optics, lasers, alignment, integration, test, and technical writing.
GitLab, LabVIEW, MATLAB, C, C++, C#
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1mo
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Infrastructure Lead - Staff DevOps Engineer
Aurora or Morrisville
$169k-$266k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
12+ YOEU.S. citizen with active Top Secret clearance and willingness to pass polygraph. 12+ years software development experience (or degree-equivalent), Security+ within 60 days, experience with CI/CD, automation, cloud security and leadership.
Ansible, Jenkins, Jira, Terraform, Git, AWS
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2w
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Senior Staff Security Product Architect
Mountain View or Pittsburgh or Seattle or Broomfield or Detroit or Bozeman or San Francisco
$191k-$340k/yr HybridFull Time
Aurora Innovation, Inc.
Aurora Innovation, Inc.NASDAQ: AUR: Self-driving technology developing hardware, software, and data services for autonomous trucking and passenger mobility.
15+ YOE15+ years in security architecture, system security engineering, or product security; bachelor's or master's STEM degree; expertise in embedded security, cryptography, secure protocols, threat modeling, and technical leadership.
TARA, STRIDE, Secure Boot, ARM TrustZone, HSM, TPM, SecOC, CAN, Ethernet, TLS, ISO/SAE 21434, ASPICE, ISO 27001, UNECE R155/R156
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2mo
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Staff Engineer, Ground Systems
Arvada, Colorado, United States
OnsiteFull Time
Quindar
Quindar: Automation First. Mission Ready. Mission management software delivering a common operating picture, system-of-systems integration, and resiliency across commercial and government space missions.
8+ YOE8+ years building or operating aerospace/satellite/mission-critical software, strong systems and software breadth, experience with satellite ground systems/mission operations, effective cross-team communication, and active U.S. security clearance.
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1mo
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Staff Electrical Engineer 1 (Acoustics Emphasis)
Littleton, Colorado, United States
$79k-$132k/yr OnsiteFull Time
Applied Research Associates
Applied Research Associates: Employee-owned U.S. research and engineering providing science, technical support, products, and solutions to government and industry.
2+ YOEBS in Electrical Engineering, 2+ years relevant experience, strong analog/digital circuit skills, board bring-up, familiarity with acoustics and audio systems, Python/MATLAB experience, lab equipment proficiency, US citizenship and ability to obtain security clearance.
Python, MATLAB, Linux, Raspberry Pi, Altium, Microsoft Outlook, Microsoft Excel, Microsoft Word, Oscilloscope, Logic Analyzer, Function Generator, Audio Measurement Tools
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2mo
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Senior Staff / Senior Machine Learning Engineer
Boulder, Colorado, United States
$126k-$193k/yr OnsiteFull Time
SciTec
SciTec: Firefly defense subsidiary providing remote sensing, missile warning, and mission data processing systems to U.S. warfighters.
5+ YOEBachelor's in a related field (or equivalent experience), 5+ years in machine learning/AI engineering, 3+ years Linux experience, proficiency with Python and ML frameworks, ability to obtain DoD security clearance, U.S. citizenship required, must work onsite in Boulder, CO.
Linux, Python, PyTorch, TensorFlow, scikit-learn, CUDA, cuDNN, TensorRT, ROCm, C++17/20/23
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1d
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Full Stack Engineer, Staff / Interim Secret / Onsite: CO or PA
King of Prussia or Littleton
$136k-$252k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Global security and aerospace driving innovative defense solutions.
Interim Secret clearance required before start, with ability to obtain Top Secret. Requires systems architecture or engineering, full stack engineering, secure systems, infrastructure, integration, and cloud, container, or virtualization experience.
OpenShift, Hyper-V, VMware, Windows, Linux
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1mo
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Project Engineer I
Dayton or Lone Tree or Miamisburg
HybridFull Time
Sierra Nevada Corporation
Sierra Nevada Corporation: Develops mission-critical aerospace and national security technology systems.
8+ YOEBachelor's in engineering, 8+ years engineering experience, 2+ years leading technical staff preferred, knowledge of requirements management, ability to obtain U.S. Secret security clearance, ability to lift 10 lbs, experience with process documentation.
MS Project, JIRA
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