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186 security software engineer jobs at 85 companies in Boulder, CO

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Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
Help us #BeatIndeed & #BeatLinkedIn
2mo
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Senior Software Security Engineer
Golden, Colorado, United States
$130k-$180k/yr OnsiteFull Time
Loft Federal
Loft Federal: Provides rapid orbital access for national security space missions.
5+ YOE5+ years in software development; 3+ years in security-focused roles; strong knowledge of DevSecOps, Zero Trust, container security; secure SDLC practices; scripting (Python, Bash, C++); Linux hardening; IaC; CI/CD security; security certifications.
Python, Bash, C++, Linux, IaC, Terraform, Helm, Ansible, SAST, DAST, SCA, SBOM, SonarQube
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3w
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Senior Software Engineer, Security/Privacy, Threat Intelligence
New York or Austin or Boulder or Reston
$174k-$253k/yr OnsiteFull Time
Google
GoogleNASDAQ: GOOGL: Provides online search, advertising, cloud computing, and consumer electronics.
5+ YOEBachelor's or equivalent, 5+ years software development, 3+ years building security/privacy software, 3+ years testing/maintaining/launching products, 1+ year software design/architecture; advanced degrees and leadership experience preferred.
Google Cloud, SQL, NoSQL
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1w
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Product Security Engineer
Irvine or Newport Beach or Denver or Seattle or San Francisco
$185k-$220k/yr HybridFull Time
Compa
Compa: AI-powered compensation intelligence platform for enterprise teams.
5+ YOE5+ years software engineering experience, application and cloud security reviews, threat modeling, secure SDLC, cloud-native and IAM knowledge, strong systems thinking and communication skills.
AWS, SAML, SCIM, RBAC, CI/CD, IAM, infrastructure-as-code, containers
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1mo
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Software Engineer
Littleton, Colorado, United States
$75k-$95k/yr OnsiteFull Time
OASYS
OASYS: Provides technology services and products for government and defense.
Experience in C/C++, full software lifecycle, US citizenship, ability to obtain security clearance.
C, C++, RTOS, GreenHill, VxWorks, MBSE, Agile
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2w
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Sr Software Engineer
Lone Tree or Englewood
$143k-$197k/yr HybridFull Time
Sierra Nevada Corporation
Sierra Nevada Corporation: Develops mission-critical aerospace and national security technology systems.
10+ YOEBachelor's in CS or related, 10+ years software development, expert C++, Java, or Python, active Secret U.S. security clearance, experience with engineering practices, documentation, and mentoring.
C++, Java, Python, C, C#, HTML, Bash, agentic coding tools
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3mo
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Security Engineer
Cayman Islands or Grand Cayman or Denver or New York City
OnsiteFull Time
Ether.fi
Ether.fi: Decentralized platform for Ethereum staking and crypto banking services.
5+ YOE5–8+ years in software and security engineering; hands-on DevSecOps; CI/CD and cloud security; endpoint security; IAM; strong communicator.
GitHub Actions, CircleCI, AWS, GCP, CrowdStrike, EDR, SAST, DAST, NPM, Dependency management
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1mo
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Senior Software Engineer
Denver or Salem
$130k-$150k/yr OnsiteFull Time
AutoStore
AutoStoreOslo Stock Exchange: AUTO: Robotic cube storage systems for automated warehouse fulfillment.
5+ YOE5+ years in software development; Bachelor’s or Master’s in CS/Engineering; strong API, security, and data tooling experience.
Git, OpenAPI, OAuth, RabbitMQ, Apache Kafka, Azure Service Bus, Event Hubs, Azure Databricks, TypeScript, C#, F#, PostgreSQL
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3w
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Software Engineer
Denver or St. Louis or Sterling or Springfield
$82k-$172k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
5+ YOEBachelor's in a technical field, TS/SCI with polygraph, 5+ years software development experience with Java and/or Python, web frameworks, relational/NoSQL databases, Agile experience, and secure coding practices.
Java, Python, ArcGIS, GeoServer, OpenLayers, Leaflet, Cesium, Docker, Kubernetes, CI/CD
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2d
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Software Engineer II
Denver, Colorado, United States
$70k-$109k/yr OnsiteFull Time
CONMED
CONMEDNYSE: CNMD: Manufacturer of surgical instruments and patient monitoring medical devices.
2+ YOEBS in computer or electrical engineering,2+ years Java/C/C++ software development in embedded or regulated environments,component ownership,unit/integration test and verification,secure coding,strong communication.
Java, C, C++, SQL, Python, MATLAB, Ruby, R
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1mo
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Principal Engineer, Mission Software
Arvada or Los Angeles or San Francisco or Seattle or Washington
HybridFull Time
Quindar
Quindar: Cloud-native software for automated satellite mission operations.
8+ YOE3+ MgmtLead complex software and systems engineering in aerospace/defense; architecture focus; leadership; government programs; security clearance readiness.
Programming, Software Architecture, Distributed Systems, APIs, Operator tooling, Mission-critical applications
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1mo
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Software Developer / Engineer
Sterling or Denver
$82k-$172k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
3+ YOETS/SCI clearance, Bachelor’s in STEM or equivalent, 3+ years software development experience, Java or web/front-end experience, Linux, containers/microservices, Agile, willing to obtain Security+ and polygraph.
Java 17, Spring Boot, Spring Framework, REST, JavaScript, TypeScript, Vue, Bootstrap, Mockito, JUnit, Cypress, PostGres, MySQL, Redis, AWS EC2, AWS RDS, AWS S3, AWS SNS, AWS SQS, Lamda, Git, Jira, Confluence, Gitlab CI/CD, SonarQube, Fortify, Docker, Kubernetes, GitLab
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1mo
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Principal Software Engineer
Denver, Colorado, United States
$225k-$270k/yr HybridFull Time
FusionAuth
FusionAuth: Provides authentication and user management software for developers.
12+ YOEBachelor's in CS or equivalent; 12+ years software engineering; 5+ years in identity/security; hands-on leadership; strong Java; CIAM expertise.
Java, PostgreSQL, MySQL, OAuth, OpenID Connect, SAML, SCIM
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2mo
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Software Engineer
San Francisco or Denver or New York City
$197k-$247k/yr HybridFull Time
Gusto
Gusto: Cloud-based payroll and HR software for small businesses.
8+ YOE8+ years mobile engineering; Kotlin Android; GraphQL; MVVM; biometric auth; passkey (FIDO2/WebAuthn); security-focused mobile development; mentoring.
Kotlin, Android, GraphQL, MVVM, BiometricPrompt, WebAuthn, FIDO2, Android testing, CI/CD
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3mo
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Senior Embedded Security Engineer, Flight Software
Denver or Long Beach
$145k-$205k/yr OnsiteFull Time
True Anomaly
True Anomaly: Develops autonomous spacecraft and software for space security missions.
5+ YOE5+ years in embedded systems security; strong C/C++; low-level embedded architecture with security; cryptographic implementations; security in resource-constrained environments.
C, C++, embedded tools, compilers, debuggers, IDEs, static analysis tools, oscilloscopes, logic analyzers, protocol analyzers, cryptographic libraries
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3d
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Sr. Software Engineer
Arlington or Denver or Merritt Island or United States
RemoteFull Time
Airbus U.S. Space & Defense
Airbus U.S. Space & DefenseEuronext Paris: AIR: Provides satellite, helicopter, and cybersecurity solutions for U.S. defense.
8+ YOEUS citizen required; bachelor's in STEM plus 8+ years (6+ with MS); proficiency in C/C++; experience with embedded/real-time software, device drivers, simulation, and software validation; ability to obtain government security clearance.
C/C++
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2mo
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Sr Software Engineer, Ground Software
Centennial or Louisville
$157k-$215k/yr OnsiteFull Time
Sierra Space
Sierra Space: Develops spacecraft and infrastructure for orbital and space transportation
8+ YOEBachelor's degree or equivalent, 8+ years experience, multiple programming languages, design/architect complex software, Agile/Scrum, leadership, security clearance eligibility.
Python, React, Git, GitHub, GitLab, Bitbucket, FastAPI, Kubernetes, Helm, ArgoCD, JIRA, Confluence, Bash, PowerShell, Ansible, Docker, AWS, MySQL, PostgreSQL, MongoDB
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1w
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Cleared Software Engineer
Aurora, Colorado, United States
$98k-$171k/yr OnsiteFull Time
General Atomics Aeronautical Systems
General Atomics Aeronautical Systems: Designs and manufactures unmanned aircraft and radar systems.
2+ YOEActive US citizenship, 2+ years software development experience (4+ with bachelors), strong Java, AWS, Docker/Kubernetes, Linux skills, mathematics and networking foundation, and ability to work in secure environments.
Java, AWS, Docker, Kubernetes, helm, helmfile, Linux
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2mo
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Software Engineer Sr.
Huntsville or Littleton or Sunnyvale
$93k-$186k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Requires US citizenship and Secret clearance. Experience with mid-to-large scale software development, modern languages (C++ or Java), HW/SW integration, embedded/flight systems, and Agile; Security+ desired.
C++, Java, Agile
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1mo
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Embedded Software Engineer
Boulder, Colorado, United States
$93k-$133k/yr HybridFull Time
Emerson
EmersonNYSE: EMR: Engineering industrial automation and software solutions for global industries.
5+ YOEBS in engineering or related field, 5+ years embedded real-time software development experience with Linux-based systems, proficiency in C/C++, bash and Python, Git, familiarity with hardware interfaces and security standards, autonomous design skills, and legal US work authorization.
Linux, NXP PowerPC, C, C++, bash, Python, Git, Yocto, LFS, Gentoo, GDB, KernelShark, ftrace, Azure DevOps, TCP/IP, TLS, I2C, SPI, UART, oscilloscope, logic analyzer, debugger
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2w
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Staff Software Developer
Boulder, Colorado, United States
$128k-$229k/yr OnsiteFull Time
General Atomics
General Atomics: Designs and manufactures unmanned aircraft and nuclear technology systems.
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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