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46 software security engineer jobs at 21 companies in Fort Collins, CO

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Software Engineer, Devops Platform Engineering
Longmont, Colorado, United States
$126k-$190k/yr HybridFull Time
AMD
AMDNASDAQ: AMD: Designs and manufactures computer processors and graphics technology.
Bachelor’s or Master’s in computer/software engineering, computer science, or related field; software engineering, DevOps, or automation experience; Python, Go, or C++; CI/CD, Kubernetes, containers, IaC, and security tooling expertise.
Continuous Integration/Continuous Delivery (CI/CD), Infrastructure as Code (IaC), K8s, SonarQube, Coverity, Snyk, Python, Go, C++, Jenkins, GitHub Actions, GitLab CI, HPC, Docker, Kubernetes, GitOps, GitHub, GitLab, BitBucket, Terraform, Ansible, Chef, Windows, Linux, PXE, IPMI, Prometheus, Grafana, ELK/Kibana
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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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1w
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Senior Software Engineer
Portland or North Dakota or Montana or Maine or Ohio or Nebraska or Phoenix or Louisiana or Texas or Nevada or Georgia or Tampa or Mississippi or Colorado or Denver or Wyoming or Wisconsin or West Virginia or Vermont or Richardson or Arkansas or Dallas or South Dakota or Pennsylvania or Michigan or Indiana or Idaho or Arizona or Plano or New Mexico or New Hampshire or Kentucky or Alabama or Philadelphia or South Carolina or Austin or Illinois or Atlanta or Missouri or Iowa or Tennessee or Boulder or North Carolina or Minnesota or Kansas or Houston or Alaska or Chicago or Rhode Island or Washington or Virginia or Utah or Oregon or Florida or Miami or Oklahoma
$139k-$204k/yr RemoteFull Time
Cisco
CiscoNASDAQ: CSCO: Develops and sells networking hardware and cybersecurity software.
5+ YOEBachelor's degree with 5+ years, master's with 3+ years, or PhD with 1+ year; production software development, testing, troubleshooting, code reviews, technical design, scalability, reliability, and security experience.
AI/ML, generative AI, LLMs, AI agents
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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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1w
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Senior Realtime Software Engineer
Boulder, Colorado, United States
$165k-$218k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
5+ YOERequires 5+ years of C++ development, Linux, low-latency software, hardware firmware testing, networking, security, distributed systems, technical documentation, and eligibility for U.S. security clearance.
Linux, Nix, NixOS, C++, CUDA, GIT, JIRA, CI/CD, C, Rust, Python
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1w
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Software Engineer I - Lab - 934
Broomfield, Colorado, United States
$88k-$110k/yr OnsiteFull Time
Quantinuum
Quantinuum: Building full-stack quantum computing hardware and software systems.
2+ YOEBachelor’s degree and 2+ years in a relevant technical field required. Must meet U.S. person and national security requirements. Hardware integration and embedded software experience valued.
Docker, Jenkins, CI/CD, LLVM
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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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1w
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Senior C++ Software Engineer
Boulder, Colorado, United States
$156k-$193k/yr OnsiteFull Time
SciTec
SciTec: Provides advanced remote sensing and missile defense technology solutions.
5+ YOEBachelor's degree in a technical field, 5+ years developing C++, 3+ years in Linux, performance optimization, production-quality code, U.S. citizenship, and ability to obtain a DoD security clearance.
C++, Linux, C++17, C++20, CUDA, OpenCL, Python, Rust, MATLAB, Agile
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1mo
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Senior/Staff Software Engineer
Boulder or New York City
$155k-$200k/yr HybridFull Time
Sovrn
Sovrn: Provides software and data tools for digital publishers to monetize.
Deep expertise designing and evolving distributed scalable systems, strong focus on performance/security/compliance, IaC and scripting experience (Terraform/CloudFormation, Python/Bash/Go), and leadership/mentorship skills.
Java, Kafka, Redpanda, AWS, Databricks, Datadog, ONNX, Terraform, CloudFormation, Python, Bash, Go
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Software Engineer
Loveland, Colorado, United States
$111k-$185k/yr OnsiteFull Time
Keysight Technologies
Keysight TechnologiesNew York Stock Exchange: KEYS: Manufactures hardware and software for electronic test and measurement.
5+ YOEBS/MS in EE/CE/CS,5+ years software development in C#/C++,experience with RF and PNA/VNA preferred,ability to obtain US DOD security clearance,eligible U.S. person,10-25% travel,strong communication and problem-solving skills.
C#, C++, PNA, VNA, Confluence, Jira, BitBucket, signal generator, signal analyzer
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1w
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Software Engineer, Connected Fleet & Operations
Fort Collins or New York or Framingham or United States or Ewing Township or Canada or Montreal or Boston or Denver or Philadelphia
$100k-$120k/yr RemoteFull Time
Landline
Landline: Providing seamless ground transportation connections for airline networks.
Production Android experience with Kotlin, offline-first design, device and IoT integration, camera, barcode/NFC scanning, GPS, backend or web development, and secure-by-design practices.
Android, Kotlin, Jetpack Compose, Samsara, Next.js, Vercel, LLM, NFC, GPS, BLE
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3w
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Senior System Software Engineer - CPU SoC Boot Firmware
Santa Clara or Boulder
$152k-$288k/yr OnsiteFull Time
NVIDIA
NVIDIANASDAQ: NVDA: Designs graphics processing units and artificial intelligence hardware.
5+ YOEBS/MS in EE/CS/CE or equivalent,5+ years embedded/software experience,proficiency in C and Python,Linux kernel expertise,ARM/bootloader experience,and knowledge of safety/security standards.
C, Python, Linux kernel, Codex
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1mo
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Software Engineer
Loveland, Colorado, United States
$111k-$185k/yr OnsiteFull Time
Keysight Technologies
Keysight TechnologiesNYSE: KEYS: Provides electronic design, test, and simulation software and hardware.
5+ YOEBS/MS in EE/CE/CS,5+ years SW development in C#/C++,experience with RF measurements and Keysight PNA/VNA preferred,eligible U.S. person and able to obtain DoD security clearance,10-25% travel.
C#, C++, Keysight PNA/VNA, Confluence, Jira, BitBucket, Signal Generator, Signal Analyzer
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2w
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Senior System Software Engineer - CPU SoC Boot Firmware
Santa Clara or Boulder
$152k-$288k/yr OnsiteFull Time
NVIDIA
NVIDIANASDAQ: NVDA: Designs GPU-accelerated computing and artificial intelligence hardware.
5+ YOEBS or MS in EE, CS, or CE; 5+ years relevant experience; strong C and Python skills; Linux kernel, embedded software, ARM, bootloader, hardware architecture, and safety and security standards experience.
C, Python, Linux kernel, ARM, Codex
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3w
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Cybersecurity Engineer (Software Assurance / ISSO Support)
Boulder, Colorado, United States
$125k/yr OnsiteFull Time
Astrion
Astrion: Provides engineering, cybersecurity, and mission support services.
1+ YOEBachelor's in CS/Cybersecurity/Engineering,1–3 years cybersecurity or software security experience,Security+ CE (DoD IAT II),ability to obtain required security clearance,knowledge of secure coding,DevSecOps,and RMF/ATO processes.
SAST, DAST, SCA, CI/CD, DevSecOps, DISA STIGs, RMF, Linux, Windows
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4d
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Software Engineering Sr Mgr - L6
Longmont, Colorado, United States
$205k-$381k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures advanced aerospace, defense, and security systems.
5+ MgmtExperience leading software and infrastructure engineers, planning technical cost and schedules, using modern development and infrastructure practices, and managing stakeholders; eligibility for security clearance required.
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2w
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Senior Director, Software Architecture
Louisville or Santa Monica or Denver
$240k-$270k/yr OnsiteFull Time
Red 6
Red 6: Provides augmented reality synthetic air combat training for military pilots.
15+ YOE8+ MgmtBachelor's degree in a related STEM discipline, 15+ years of software engineering experience, 8+ years leading architecture initiatives, aerospace or defense experience, and ability to obtain a DoD security clearance.
Augmented Reality (AR), Advanced Tactical Augmented Reality System (ATARS), MOSA, OMS, FACE, DevSecOps, CI/CD, Infrastructure Code, AI/ML, MBSE, DO-178, AC-17-01, microservices, Kubernetes, RMF, Zero Trust, Microsoft?, RTOS, GPU, Linux, FSA
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1w
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DevSecOps Engineer
Niwot or Boulder
$95k-$130k/yr HybridFull Time
Particle Measuring Systems
Particle Measuring Systems: Manufactures particle counters and cleanroom contamination monitoring systems.
Bachelor's degree in computer science or engineering, DevSecOps experience, embedded firmware or software development, cloud, IaC, scripting, containers, CI/CD, security, monitoring, and troubleshooting skills.
AWS, SAST, DAST, SCA, SBOM, Bash, Python, PowerShell, CMake, Make, Docker, Jenkins, Bitbucket Pipelines, GitHub Actions, Prometheus, Grafana, Git, Atlassian, SPDX, CycloneDX, DORA metrics, EN 18037, IEC 62443
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1mo
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Principal Cloud Developer
Andover or Houston or Durham or Fort Collins or Roseville
$152k-$349k/yr HybridFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Provides edge-to-cloud IT infrastructure and platform services.
10+ YOEBachelor's degree in CS/engineering,10+ years experience,expertise in software design,programming (Python,Java,Golang,JavaScript),cloud security and architecture,mentoring and technical leadership.
Python, Java, Golang, JavaScript
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1w
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Mission Readiness Engineer
Longmont, Colorado, United States
$120k-$160k/yr OnsiteFull Time
nLIGHT
nLIGHTNASDAQ: LASR: Designs and manufactures high-power semiconductor and fiber laser systems.
3+ YOERequires 3+ years of experience, a bachelor's degree in engineering, science, or a related technical field, security clearance eligibility, technical writing, field testing, training, and hardware/software systems experience.
Robotics, FAA Part 107 Remote Pilot Certification, Mission Planner
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