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123 sr security software engineer jobs at 65 companies in Commerce City, CO

3mo
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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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3mo
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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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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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2w
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Sr. Software Engineer (Contract)
Arlington or Denver or Houston or Merritt Island or United States
RemoteContract
Airbus U.S. Space & Defense
Airbus U.S. Space & DefenseEuronext Paris: AIR: Provides satellite, helicopter, and cybersecurity solutions for U.S. defense.
8+ YOEBachelor's in STEM (Masters preferred). 8 years' experience (6 with Masters) designing and developing embedded/aerospace software. Proficiency in C/C++. US citizenship and ability to obtain government security clearance required.
C, C++
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1w
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Senior Software Engineer, Identity Security (Golang)
Denver, Colorado, United States
OnsiteFull Time
Apple
AppleNASDAQ: AAPL: Designs and sells consumer electronics, software, and online services.
Deep technical expertise in security and identity for cloud workloads, large-scale operations experience, and strong software engineering skills.
Golang
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1mo
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Sr Full Stack Software Developer
Denver or Sterling
$82k-$172k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
5+ YOEActive TS/SCI clearance with polygraph preferred, 5+ years software development, proficiency in Java and JavaScript, Linux experience, willingness to obtain Security+; Bachelor's in CS or accredited bootcamp required.
Java, JavaScript, Linux, Kubernetes, Elasticsearch, Java Spring Boot framework, AWS, WebSocket's, RESTful API
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1mo
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Sr Full Stack Software Developer
Denver or Sterling
$82k-$172k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
5+ YOEActive TS/SCI clearance (polygraph preferred), 5+ years software development, proficiency in Java and JavaScript, Linux experience, bachelor's in CS or coding bootcamp, Security+ (or willingness), cloud and microservice experience.
Java, JavaScript, Linux, Kubernetes, Elasticsearch, Spring Boot, AWS, WebSocket, RESTful API
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1w
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Sr. Satellite Flight Software Engineer - TeraWave
Seattle or Denver
$182k-$277k/yr OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
10+ YOEBachelor's degree,10+ years embedded/flight software experience for spacecraft or mission-critical systems; proficiency in C/C++,Python,RTOS,EMBEDDED LINUX/VxWorks/QNX; experience with CI/CD, verification, and secure software practices.
C, C++, Python, Embedded Linux, VxWorks, QNX, TCP/IP, UDP, CAN, I2C, SPI, RS-422/485, core Flight System (cFS), F Prime, Software-in-the-loop (SIL), Hardware-in-the-loop (HIL), CI/CD
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2mo
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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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2mo
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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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2w
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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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2mo
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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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1mo
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Sr. Software Test Engineer (Contingent)
Aurora, Colorado, United States
$87k-$165k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
5+ YOEActive transferable TS/SCI clearance and U.S. citizenship, 5+ years relevant experience (or 3+ with advanced degree), experience with automated test frameworks, Agile/CI workflows, and validating functional/performance/security requirements.
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6d
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Software Engineer III
Lone Tree or Englewood
$108k-$149k/yr HybridFull Time
Sierra Nevada Corporation
Sierra Nevada Corporation: Develops mission-critical aerospace and national security technology systems.
6+ YOEBachelor's in CS or related,6+ years software development,proficiency in C# or Java,experience with Linux/RHEL and Windows services,hardware integration experience,ability to obtain U.S. Secret security clearance.
C#, Java, Linux (RHEL), Windows services, C, C++, HTML, Python, Bash
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5d
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Senior Software Engineer, Radar
Broomfield or Fort Collins
$190k-$252k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
5+ YOE5+ years software development experience; proficiency in C++; experience with Nix/NixOS, API design, reproducible builds, and software quality/security practices; Bachelor's in CS/CE or related.
C++, Python, Nix, NixOS, Lattice OS, gRPC, Protobuf, ZeroMQ, DDS, Docker, Linux
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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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1mo
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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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2w
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Principal Software Engineer – Cloud Systems
Denver, Colorado, United States
$140k-$170k/yr OnsiteFull Time
Kongsberg Satellite Services
Kongsberg Satellite Services: Provides global satellite ground station and communication services.
10+ YOE5+ Mgmt10+ years software engineering, 5+ years technical leadership, expertise in cloud-native architectures, Kubernetes, Python/Rust, cloud migrations, CI/CD, databases, security, and ability to obtain U.S. DoD Secret clearance.
Python, Rust, Kubernetes, Docker, Microsoft Azure, Microsoft Azure Government, AWS GovCloud, OpenStack, Helm, GitLab CI/CD, Terraform, Ansible, Prometheus, Grafana, Loki, Service Mesh, REST API
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1w
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Senior Radar Software Engineer
Denver, Colorado, United States
OnsiteFull Time
LeoLabs
LeoLabs: Provides orbital intelligence and space domain awareness services.
7+ YOEBachelor's degree in CS/SE/EE,7+ years software engineering experience, proficiency in Python/C++ and Linux, experience with distributed systems, CI/CD and DevOps, U.S. citizenship and ability to obtain personnel security clearance.
Python, C++, Linux, CI/CD, DevOps
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2mo
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Product Security Engineer
San Francisco or Denver or New York
$180k-$258k/yr HybridFull Time
Candid Health
Candid Health: Automates medical billing and revenue cycle management for healthcare providers.
5+ YOE5+ years in software or security engineering focusing on product security; strong cloud and web security knowledge; collaboration and problem solving.
SAST, DAST, SCA, CI/CD, Cloud Platforms, Kubernetes, Python, Go, Java, JavaScript
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