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33 sr security software engineer jobs at 15 companies in Fort Collins, CO

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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1mo
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Software Development Engineer III / Sr. Software Development Engineer - AI Platform
Boulder, Colorado, United States
$156k-$234k/yr HybridFull Time
Workday
WorkdayNASDAQ: WDAY: Provides cloud-based software for financial and human capital management.
5+ YOE5+ years software development experience (SDE III) or 8+ years for senior; strong distributed systems, backend/platform engineering, security and observability; proficiency in Java, Go, Rust, or Python; production reliability and API experience.
Java, Go, Rust, Python
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1w
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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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2mo
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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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1mo
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Senior Cybersecurity Systems Software Engineer
Colorado Springs or Durham or Spring or Fort Collins or Andover
$170k-$323k/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/Info Systems, 10+ years cybersecurity engineering and software development, experience with security architectures, standards and certifications, strong communication and executive influence skills.
Post-Quantum Cryptography (PQC), EU Cyber Resilience Act (EU CRA), 802.1AR Device Identities, NIST SP 800-53, DISA SRG/STIG, Common Criteria, Agentic AI, FIPS, TLS, SSH, Cryptography
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3w
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Tech Lead - Web Software Engineer
Tulsa or Oklahoma City or Dallas or Houston or Little Rock or Kansas City or Lincoln or Denver or St. Louis or Boulder
$145k-$165k/yr OnsiteFull Time
BOK Financial
BOK FinancialNASDAQ: BOKF: A regional financial services providing diverse banking solutions.
8+ YOERequires 8–10+ years of software engineering experience, 4+ years with Angular, technical leadership, TypeScript, NgRx, Nx, web architecture, REST APIs, testing, CI/CD, security, accessibility, and production operations.
Angular, TypeScript, NgRx, Nx, REST APIs, Docker, AWS, Okta, OIDC, SonarQube, Checkmarx, Kong, Apigee, CI/CD, PCI, SOX, WCAG
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3mo
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Staff / Sr Staff Numerical Algorithm Software Engineer
Boulder, Colorado, United States
$98k-$146k/yr OnsiteFull Time
SciTec
SciTec: Provides advanced remote sensing and missile defense technology solutions.
2+ YOEBachelor’s or Master’s in technical field; 2+ years in numerical algorithms for signal/image processing; Python and C++ expertise; Linux development; Agile; DoD security clearance preferred.
Python, C++, Linux, CI/CD, Docker, Kubernetes
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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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4w
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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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1mo
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Senior GCP Software Engineer
San Francisco or Boulder
$165k-$200k/yr OnsiteFull Time
Xylo Risk
Xylo Risk: Physics-based wildfire risk modeling for community resilience.
7+ YOE7+ years building production backend systems; strong Python; 3+ years GCP experience (Cloud Run, GKE, Batch, Pub/Sub, Cloud Storage); API design (REST/gRPC/GraphQL); containerization (Docker, Kubernetes); security and observability experience.
Python, Google Cloud Platform, Cloud Run, GKE, Batch, Pub/Sub, Cloud Storage, Terraform, Cloud Build, REST, gRPC, GraphQL, Docker, Kubernetes
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1w
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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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4w
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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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1w
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Software Engineer - Level 3 or 4 (Mathematician)
Boulder, Colorado, United States
$114k-$171k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Designs and manufactures advanced aerospace and defense systems.
5+ YOERequires experience in modern C++ and Python, strong math and state-estimation background, active U.S. security clearance, and experience with Linux; 5+ years experience typical for hire.
Linux, C++, Python, Plotly, JavaScript, SQL
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3d
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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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1w
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Cybersecurity Software Engineer - Level 3 or 4
Boulder, Colorado, United States
$114k-$213k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
5+ YOERequires DoD 8570 IAT Level II+ certification, active U.S. Secret clearance, 5+ years related experience (Level 3) or 8+ years (Level 4), cybersecurity and DevSecOps experience, familiarity with NIST/RMF and cloud security.
Tenable Security Center, Nessus, Splunk, LogRhythm, Linux, HBSS, ACAS, Python, C++
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1w
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26-117: Fire Weather Testbed Cloud Developer
Boulder or Fort Collins
$110k-$120k/yr HybridFull Time, Temporary
Colorado State University
Colorado State University: Public research university offering undergraduate and graduate degree programs.
5+ YOEBachelor's degree plus 5 years, master's plus 2 years, or Ph.D. in a technical field; AWS, Python, JavaScript, React, Git, security clearance, and U.S. work authorization required.
Amazon Web Services (AWS), Amazon SQS, Amazon EC2, Amazon S3, AWS Lambda, Amazon RDS, boto3, AWS SDK for Java, Python, JavaScript, React, Git, Terraform, AWS CloudFormation, Docker, Kubernetes, Amazon Elastic Kubernetes Service (EKS), GRIB2, NetCDF, JSON, GeoTIFF, Zarr, ArcGIS, AWIPS-II, VLab, EDEX, LDM
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1w
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Director of Product Management, Cloud Security
Broomfield, Colorado, United States
HybridFull Time
Exabeam
Exabeam: AI-driven security operations platform for threat detection and response.
Substantial enterprise software product management experience, including leading product managers; deep cybersecurity expertise; ownership of strategy through measured releases; strong engineering collaboration, writing, and executive presentation skills.
SIEM
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