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129 us citizen jobs at 61 companies in Thornton, CO

2mo
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COMSEC Officer, US Amazon Dedicated Cloud Security
Jessup or New Albany or Culpeper or Arlington or Seattle or Bellevue or Denver or Herndon or San Antonio or Phoenix
$102k-$178k/yr OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
5+ YOEUS citizen with active TS/SCI + polygraph, 5+ years COMSEC/networking/IT support for Federal Government, COMSEC custodian experience and Type 1 device familiarity preferred; strong communication and compliance skills.
Type 1 Cryptographic devices, KIK, SKL, SDS
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2mo
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Goalkeeper Coach
Greeley, Colorado, United States
$35-$40/hr OnsiteContract, Part Time
Colorado Rush
Colorado Rush: Provides youth soccer training and development programs.
Part-time contractor goalkeeper coach; 16 sessions; Fridays; US citizen; permanent US residence; background check.
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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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3mo
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Senior Photonics Scientist - 849
Broomfield, Colorado, United States
$164k-$205k/yr OnsiteFull Time
Quantinuum
Quantinuum: Building full-stack quantum computing hardware and software systems.
8+ YOEBachelor’s degree; 8+ years in experimental freespace optics or integrated photonics; U.S. person per contract; U.S. citizen/permanent resident/green card holder; nationals of PRC or Russia not allowed unless US citizen.
MATLAB, Python, Lumerical, COMSOL, RCWA, FDTD, FEM, RSoft, Origin, Igor
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3w
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Unarmed Security Officer
Westminster, Colorado, United States
$28/hr OnsiteFull Time, Part Time
Falken Industries
Falken Industries: Provides specialized security and technical surveillance for secure facilities.
US citizen, no felony history, must pass extensive background check, fluent in English, valid driver’s license required.
CCTV, Access Control System
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2mo
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Loads Development Lead, Space Based Interceptors
Denver or Colorado Springs or Long Beach
$175k-$305k/yr HybridFull Time
True Anomaly
True Anomaly: Develops autonomous spacecraft and software for space security missions.
8+ YOE8+ years in aerospace structural loads; CLA, MAC; leadership; DoD/Space Force experience; TS/SCI preferred; US citizen.
Femap, NASTRAN, MATLAB, Python
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1d
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WORK FROM HOME/HOME BASED INSURANCE AGENT
Denver, Colorado, United States
RemotePart Time, Full Time
The Jernigan Agency
The Jernigan Agency: Provides life insurance and mortgage protection through independent agents.
Must be a US citizen, licensed in life insurance products or willing to obtain licensure, and have a computer, phone, and internet connection. Training is provided.
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2mo
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Director of Enterprise Simulation & Synthesis
Denver, Colorado, United States
$190k-$220k/yr OnsiteFull Time
Xcimer Energy
Xcimer Energy: Developing laser-driven inertial fusion for commercial clean energy
12+ YOELead enterprise simulation, build organization, establish standards, with 12+ years in modeling and leadership; advanced degree. US citizen or permanent resident preferred.
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3mo
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Construction Risk Manager - Denver, Colorado, United States
New York or Houston or Boston or Washington or Chicago or Denver
$120k-$200k/yr HybridFull Time
Jacobs
JacobsNYSE: J: Global provider of professional engineering and technical services.
5+ YOEBachelor’s in Construction Management, Engineering, or Architecture; 5+ years risk management; experience in project controls; knowledge of risk methods/tools; US citizen.
Risk management tools, Monte Carlo analysis, CSRA, risk registers
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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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2w
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Outpatient Psychiatrist
Denver, Colorado, United States
$500k/yr OnsiteFull Time
Serenity Mental Health Centers
Serenity Mental Health Centers: Providing advanced psychiatric treatments including TMS and ketamine therapy.
Board eligible/certified psychiatrist, licensed or willing to obtain state license, unencumbered DEA, clean background, US citizen or green card holder required.
Brainsway Deep TMS
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3w
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Senior ServiceNOW Developer
Lakewood or Phoenix or Folsom or Billings
$135k-$155k/yr OnsiteFull Time
KeyLogic
KeyLogic: Provides technology and mission management solutions to government agencies.
US citizen with bachelor’s in CS/IT/engineering, ServiceNow development experience, JavaScript and integration skills, ability to obtain Public Trust, strong communication and problem-solving.
ServiceNow, JavaScript, Flow Designer, IntegrationHub, REST, SOAP, MID Server, OAuth, JWT, Now Assist, ServiceNow SDK
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1mo
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Contractor - Manufacturing Technician II (Manufacturing Technician, 2)
Littleton, Colorado, United States
$26-$33/hr OnsiteContract
Redwire
RedwireNYSE: RDW: Manufactures infrastructure and hardware components for diverse space missions.
2+ YOEHigh school diploma/GED, 2+ years aerospace manufacturing experience, mechanical aptitude, ability to lift 50 lbs, US citizen/US Person per ITAR, intermediate Microsoft Office 365 skills.
Microsoft Office 365
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1mo
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Factory Build Software Developer
Spring or Fort Collins
$106k-$243k/yr OnsiteFull Time
Hewlett Packard Enterprise
Hewlett Packard EnterpriseNYSE: HPE: Providing global edge-to-cloud infrastructure and IT solutions for businesses.
4+ YOE4+ years technical experience with GoLAN services, applied cryptography, HSM/TPM integration, containerized Linux environments, and CI/CD; US citizen or green card required; US-hours support including evenings/weekends.
GoLAN, CGo, Java, C, PKCS#11, Thales Luna, TPM 2.0, go-tpm, go-attestation, CRYSTALS, Docker, nginx, MariaDB, MS SQL Server, MongoDB, GitHub, GitHub Actions, Docker multi-stage builds, container registry
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2w
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Board Director - Independent Contractor
Centennial or Palm Bay or Colorado Springs or Tucson or Chantilly
RemoteContract
Rincon Research Corporation
Rincon Research Corporation: Designs high-performance digital signal processing solutions for defense missions
10+ YOE10+ years senior executive or CEO/board experience, Top Secret clearable US citizen, strong governance, financial literacy, and ESOP/employee-ownership understanding.
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1mo
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Environmental Scientist - Remediation Focus
Glenwood Springs or Denver or Fort Collins or Colorado Springs or Grand Junction
$55k-$85k/yr HybridFull Time
AECOM
AECOMNYSE: ACM: Provides infrastructure consulting and engineering services for global projects.
2+ YOEBachelor's in environmental science/engineering and 2+ years relevant experience; valid driver's license; willingness to travel extensively; US citizen or permanent resident required; HAZWOPER preferred.
Microsoft Office, AutoCADD, GIS
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3mo
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PAYROLL CLERK
Aurora, Colorado, United States
OnsiteFull Time
The GEO Group
The GEO GroupNYSE: GEO: Provides correctional, detention, and community reentry services.
2+ YOEHigh school diploma or GED; 2 years payroll/clerical experience; strong organizational and communication skills; computer proficiency; valid driver’s license; 21+; US citizen.
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4w
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Talent Acquisition Specialist
Littleton, Colorado, United States
$60k-$70k/yr HybridFull Time
I2X Technologies
I2X Technologies: Provides mission-critical engineering, cybersecurity, and IT services to government agencies.
3+ YOEUS citizen required. Bachelor's degree with 3+ years recruiting (heavy sourcing) or Associate +5 years. Experience with iCIMS, LinkedIn Recruiter, ClearanceJobs and federal/aerospace recruiting.
iCIMS, LinkedIn Recruiter, ClearanceJobs
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3mo
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Lead Diagnostic Radiologic Technologists
Aurora, Colorado, United States
$92k-$120k/yr OnsiteFull Time
Department of Veterans Affairs
Department of Veterans Affairs: Provides healthcare, benefits, and cemetery services to military veterans.
1+ YOEUS citizen; ARRT Radiography (R) required; 24-month post-high school radiologic technology program; advanced ARRT certs (CT/MRI/Mammography) as applicable.
VISTA, VISTA Imaging, CPRS, PACS
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3mo
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Project Manager II
Westminster, Colorado, United States
$98k-$120k/yr OnsiteFull Time
Advanced Technology Group
Advanced Technology Group: Designs and manufactures high-precision nuclear containment systems.
5+ YOE5+ years leading complex design/build projects; PMP preferred; US citizen; Bachelor's in engineering or manufacturing; government contracts experience; MS Project/Excel proficiency.
MS Project, Excel, ERP/MRP systems, MS Office
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