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283 security software engineer jobs at 129 companies in Colorado

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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
2w
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Security Software Engineer
Utah or New York or California or Texas or Colorado or New York City or San Francisco or Connecticut or Illinois or District of Columbia or Maryland or Massachusetts or New Jersey or Washington or Virginia or Alaska
$102k-$214k/yr RemoteFull Time
Proofpoint: Provides cybersecurity solutions for email, cloud, and data protection.
Build and maintain tooling and environments for threat research; experience with network inspection, virtualization, scripting (Lua/Python), regex/PCRE, web apps, APIs, databases, containers.
Wireshark, tcpdump, Moloch, VMware, VirtualBox, KVM, Lua, Python, PCRE, React, PostgreSQL, ES, MongoDB, Docker, Kubernetes
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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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1mo
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Senior Systems Software Security Engineer – Data Center Systems
Colorado or United States
$152k-$288k/yr RemoteFull Time
NVIDIA
NVIDIANASDAQ: NVDA: Designs graphics processing units and artificial intelligence hardware.
5+ YOEBS/MS in Computer Engineering/Computer Science or equivalent experience; 5+ years software/firmware security engineering; strong security fundamentals; experience with threat modeling, CI/CD, incident response, code audit; Python and system programming; server architecture knowledge.
Python, OpenBMC, UEFI, TCG DICE, SPDM, PLDM, Redfish, NIST SP800-193, CNSA2.0, CI/CD, Linux
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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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2d
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Software Developer
Colorado Springs, Colorado, United States
$100k-$110k/yr OnsiteFull Time
IPT Associates
IPT Associates: Provides IT and professional services to federal government agencies.
10+ YOEBachelor's degree in CS/IS/Engineering,10 years experience, IAT-II, active security clearance required; experience designing and developing OS-level, embedded, compiler, or networking software.
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3d
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Software Engineer Staff
Colorado Springs or King of Prussia
$114k-$227k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
U.S. citizen with Secret clearance; professional software engineering experience with automated testing (Playwright/Selenium/Cypress), TypeScript or Java; Bachelor’s in CS/Engineering; familiarity with CI/CD and secure SDLC.
Playwright, Selenium, Cypress, TypeScript, Java, Gitlab, Github, Docker, Kubernetes, .Net Core, Spring Boot, Angular, React
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3w
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Senior Software Engineer
Colorado Springs, Colorado, United States
$130k-$180k/yr OnsiteFull Time
Omitron
Omitron: Provides aerospace engineering and mission operations for space programs.
6+ YOEUS citizen eligible for U.S. government security clearance; Bachelor's in Software Engineering/CS; 6+ years software engineering experience; schema-driven data formats (DFDL/XML/JSON); Git, CI/CD, automated testing; proficiency in Python/Java/C++; technical leadership and Agile experience.
DFDL, XML, JSON, Git, CI/CD, Python, Java, C++, GitLab, JIRA, Confluence, RMF
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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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10h
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Senior Software Engineer — PingOne Platform Administration & Security
United States or Denver
$110k-$138k/yr RemoteFull Time
Ping Identity
Ping Identity: Provides identity and access management software for enterprise security.
5+ YOE5+ years software engineering experience with backend services; Java and NodeJS experience; TypeScript and REST API familiarity; experience with SaaS, CI/CD, distributed systems, and mentoring peers.
Java, NodeJS, TypeScript, REST APIs, CI/CD, MCP
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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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3w
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Software Engineer 2
Annapolis Junction or Columbia or Colorado or Georgia or Hawaii or Texas or Utah or Virginia
$173k-$203k/yr OnsiteFull Time
RealmOne
RealmOne: Provides advanced technology services for national security agencies.
5+ YOE5+ years software engineering experience, 2 years in SIGINT/IA/IT preferred; active security clearance with appropriate polygraph required; JavaScript/TypeScript/Node.js, AWS, Docker, Git/GitLab experience; Bachelor's in computer engineering or CS (or substitute experience).
JavaScript, DOM, TypeScript, Node.js, npm, AWS, Docker, Git, GitLab CI, GitLab pipelines, Jest, Cypress, JIRA, Microsoft Office JavaScript API
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3d
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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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2mo
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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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4w
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Software Engineer II
Colorado Springs, Colorado, United States
OnsiteFull Time
MKS2 Technologies
MKS2 Technologies: Delivers cybersecurity and IT solutions to government agencies.
4+ YOE4+ years software engineering experience; Java required, C++ preferred; Docker and CI/CD experience; unit testing (JUnit/Google Test); active Secret clearance; Bachelor's degree required; must work onsite in secure facility.
Java, C++, JUnit, Google Test, Docker, Kubernetes, CI/CD, Jenkins, Atlassian Bamboo, GitLab CI, GitHub Actions
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2mo
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Principal Software Engineer
Colorado Springs, Colorado, United States
$165k-$230k/yr OnsiteFull Time
Bluestaq
Bluestaq: Develops secure data management platforms for defense and space missions.
10+ YOEMaster-level technical expert in software engineering with track record of defining strategy and leading large, complex systems; 10+ years; strong leadership and security/compliance focus.
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