17 linux system engineer jobs at 5 companies in South Tucson, AZ

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Sr. Systems Engineer - Systems Engineer II - Modeling Simulation & Analysis Engineer
Tucson, Arizona, United States
$87k-$165k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
5+ YOEBachelor’s in STEM and 5+ years relevant experience; U.S. citizenship and ability to obtain Interim Secret clearance; experience with C or C++, Python or MATLAB, modeling/simulation of physical systems, and UNIX/Linux/Git.
C, C++, Python, MATLAB, UNIX, Linux, Git
1w
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Senior Infrastructure Engineer
Tucson, Arizona, United States
OnsiteFull Time
Komatsu
KomatsuTokyo Stock Exchange: 6301: Manufactures and services construction, mining, and industrial heavy machinery.
7+ YOE7+ years in infrastructure/DevOps/SRE, experience with on-prem and hybrid infrastructure, CI/CD, Linux, networking, security, SRE practices, and field-deployed mission-critical systems.
Terraform, Ansible, Packer, Prometheus, Grafana, ELK, OpenTelemetry, GitHub, Jenkins, GitLab CI, VMware, KVM, Datadog, Linux
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Principal Systems Engineer - Systems Engineer II - Modeling Simulation & Analysis Engineer
Tucson, Arizona, United States
$108k-$205k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Provides advanced aerospace and defense systems and services.
8+ YOEBachelor’s in STEM and 8+ years experience; proficiency in C++, C, MATLAB or Python; modeling/simulation and analysis experience; UNIX/Linux and Git familiarity; ability to obtain Interim Secret clearance; U.S. citizenship required.
C++, C, MATLAB, Python, UNIX, Linux, Git
2w
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Sr HWIL Software Engineer
Tucson, Arizona, United States
$87k-$165k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
5+ YOEBachelor's in STEM and minimum 5 years relevant experience; strong C++ and embedded software experience; experience with Linux/VxWorks and real-time systems; active transferable Secret clearance required; ability to obtain interim clearance.
C++, C, Java, Python, Perl, MATLAB, VxWorks, Linux, Windows
2w
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Principal HWIL Software Engineer
Tucson, Arizona, United States
$108k-$205k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
8+ YOEBachelor's in STEM and minimum 8 years experience developing real-time embedded or HWIL software; active transferable DoD Secret clearance required; experience with C/C++/Python, Linux/VxWorks, embedded systems, and Agile lifecycle.
C, C++, Python, Linux, VxWorks, Matlab, oscilloscopes, logic analyzers, network analyzers, spectrum analyzers, Earned Value Management System (EVMS)
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Principal Systems Engineer - Signal and Sensor Modeling Engineer
Tucson, Arizona, United States
$108k-$205k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Provides advanced aerospace and defense systems and services.
8+ YOEU.S. citizenship and Secret clearance eligibility required. Bachelor's in STEM with ~8+ years experience. Strong C++/C, MATLAB or Python, UNIX/Linux skills and EO/IR/RF or radar/imaging/signal processing background.
C++, C, MATLAB, Python, UNIX/Linux, Apple OS, Windows, OpenGL, CUDA, Make, CMake
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Systems Engineer II - Signal and Sensor Modeling Engineer
Tucson, Arizona, United States
$69k-$131k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Provides advanced aerospace and defense systems and services.
2+ YOEBachelor's in STEM and 2+ years relevant experience; strong C++/C skills, MATLAB or Python, UNIX/Linux familiarity, EO/IR/RF or radar/imaging experience, and ability to obtain an interim Secret security clearance (U.S. citizenship required).
C++, C, MATLAB, Python, UNIX, Linux, Apple OS, Windows DOS, OpenGL, CUDA, Make, CMake, AI/ML
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Systems Engineer II - Systems Engineer II - Modeling Simulation & Analysis Engineer
Tucson, Arizona, United States
$69k-$131k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Provides advanced aerospace and defense systems and services.
2+ YOEU.S. citizen able to obtain Interim Secret clearance; Bachelor's in STEM and minimum 2 years' relevant experience; experience with C/C++, Python or MATLAB, modeling/simulation, and analyzing physical systems.
C, C++, Python, MATLAB, UNIX, Linux, Git
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Sr. Systems Engineer - Signal and Sensor Modeling Engineer
Tucson, Arizona, United States
$87k-$165k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Provides advanced aerospace and defense systems and services.
5+ YOEBachelor's in STEM and 5+ years experience; strong C++/C and MATLAB or Python skills; experience with UNIX/Linux command line and EO/IR/RF or radar/signal processing; ability to obtain Interim Secret security clearance; U.S. citizenship required.
C++, C, MATLAB, Python, UNIX, Linux, Apple OS, Windows DOS, OpenGL, CUDA, Make, CMake
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Sr. Principal Systems Engineer - Signal and Sensor Modeling Engineer
Tucson, Arizona, United States
$132k-$252k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
10+ YOEU.S. citizen required; ability to obtain Interim Secret clearance. Bachelor’s in STEM and 10+ years experience. Proficiency in C++, C, MATLAB or Python, UNIX/Linux/Windows command line, and EO/IR/RF or radar signal processing.
C++, C, MATLAB, Python, UNIX, Linux, Apple OS, Windows, OpenGL, CUDA, Make, CMake
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Cyber Security Engineer- Compliance
Tucson, Arizona, United States
$53-$58/hr OnsiteFull Time
Quest Defense
Quest Defense: Provides specialized engineering services for aerospace and defense industries.
2+ YOEBachelor's in a STEM field, 2+ years cybersecurity or systems administration experience, experience with NIST SP 800-171 and vulnerability remediation, Windows/Linux administration, strong troubleshooting and communication; U.S. citizenship required.
NIST SP 800-171, CMMC, DFARS 252.204-7012, NIST SP 800-53, NIST SP 800-82, iRAMP, STIGs, Windows, Linux, Networking fundamentals
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2026 - Guidance, Navigation & Control - Systems Engineer II - Onsite
Tucson, Arizona, United States
$69k-$131k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
Master's in STEM (GPA≥3.0) required; experience in GNC, signal processing, modeling/simulation; coursework in control, Kalman filters, navigation/GPS/INS; active transferable DoD Secret clearance and U.S. citizenship required.
MATLAB, Python, C, C++, Linux
2w
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Engineering Tools Manager, Onsite, Multiple US Location options
McKinney or Tucson or Aurora or Largo or Richardson or State College or Fort Wayne
$108k-$205k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
8+ YOE8+ years experience with systems engineering tool deployment, support, migrations; Windows/Linux admin and scripting; leadership of tool specialists; vendor engagement and strong communication.
STK, MAK, ExtendSim, SimulationView, ArcGIS, Windows, Linux, Microsoft Excel, Microsoft Project, Microsoft PowerPoint
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Senior Software Engineer II - Confluent Cloud Platform (Remote)
Poughkeepsie or Lowell or Rochester or Tucson or Research Triangle Park or Armonk or Boston or Bellevue or Atlanta or San Jose or Dallas or Austin or San Francisco or Seattle
$131k-$245k/yr HybridFull Time
IBM
IBMNew York Stock Exchange: IBM: Global technology providing enterprise software, cloud, and consulting.
Strong programming in Go/Java/Python, deep systems internals, Kubernetes and public cloud (AWS/GCP/Azure) experience, GitOps/Terraform/CI/CD/observability expertise, bachelor's degree required; ability to work without visa sponsorship.
Go, Java, Python, Kubernetes, AWS, GCP, Azure, GitOps, Terraform, CI/CD, Prometheus, Grafana, Linux, Apache Kafka
1d
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Secure Computing Engineer - ELSYS - Tucson, AZ - (Open Rank)
Tucson, Arizona, United States
OnsiteFull Time
Georgia Tech Research Institute
Georgia Tech Research Institute: Performs applied scientific research and engineering for various organizations.
5+ YOERequires U.S. citizenship, ability to obtain and maintain a security clearance, classified IT systems experience, cybersecurity control documentation, RMF/ATO knowledge, and a related degree with 0–5 years of experience depending on degree level.
Continuous Integration and Continuous Development (CICD), DevOps, DevSecOps, Infrastructure as Code, STIGS, CMMC, Virtual machines, Windows, Linux, firewalls, VLANs, VPNs, Electronic Systems Laboratory (ELSYS), Information Systems Security Manager (ISSM), Information Systems Security Officer (ISSO), Risk Management Framework (RMF), Authorization to Operate (ATO), System Security Plan (SSP), Plan of Action and Milestones (POA&Ms), Software Development Kits (SDKs), Hardware Development Kits (HDKs), National Institute of Standards and Technology (NIST), IDS/IPS
3mo
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HWIL Sr Systems Integrator
Tucson, Arizona, United States
$87k-$165k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
5+ YOEDegree in STEM with 5+ years of experience; hardware/software/firmware integration; test equipment experience; on-site in Tucson, AZ; ability to obtain DoD Secret clearance.
Oscilloscope, Spectrum Analyzer, Signal Generator, Windows, Linux, Java, C, C++, Python, Perl, MATLAB
3mo
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HWIL Systems Integrator II
Tucson, Arizona, United States
$69k-$131k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
2+ YOEDegree in STEM with 2+ years of relevant experience; integration of hardware, software, and firmware; familiarity with test equipment; strong communication and documentation skills.
Oscilloscopes, Spectrum analyzers, Signal generators, Windows, Linux, Java, C, C++, Python, Perl, MATLAB