16 sr principal software engineer jobs at 3 companies in South Tucson, AZ

2w
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Principal Engineer, Actuation Systems Embedded Software
Tucson or Huntsville or Portsmouth
$108k-$205k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Aerospace and defense providing advanced technology solutions.
8+ YOESTEM university degree and 8+ years of relevant experience, or advanced degree and 5+ years. Requires embedded C/C++, MATLAB/Simulink, systems engineering, and documented software development experience.
C, C++, MATLAB, Simulink, FPGA, VHDL, UART, SPI, I2C, GIT, Subversion, MISRA-C
2w
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Sr Principal Real-time Software Engineer
Tucson, Arizona, United States
$132k-$252k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Aerospace and defense providing advanced technology solutions.
10+ YOESTEM degree and 10+ years of relevant experience required, including embedded C++ or security or software architecture; RTOS, hardware-firmware-software integration, and active Secret clearance required.
C++, Real Time Operating Systems (RTOS), Green Hills, Integrity, Wind River VxWorks, Linux, VHDL, Verilog
2w
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Sr Principal Real-time Software Engineer
Tucson, Arizona, United States
$132k-$252k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Aerospace and defense providing advanced technology solutions.
10+ YOESTEM degree and 10+ years of relevant experience required, including embedded C++ software, security, or architecture experience; RTOS, hardware/firmware integration, U.S. citizenship, and interim Secret clearance required.
C++, Real Time Operating Systems (RTOS), Green Hills, Integrity, Wind River VxWorks, Linux, VHDL, Verilog, power supplies, digital multi-meters, oscilloscopes, logic analyzers
1mo
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Principal HWIL Software Engineer
Tucson, Arizona, United States
$108k-$205k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Aerospace and defense providing advanced technology solutions.
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)
3w
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Principal Real-time Software Engineer
Tucson, Arizona, United States
$108k-$205k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Aerospace and defense providing advanced technology solutions.
8+ YOESTEM degree and 8+ years relevant experience required. Requires embedded C++, software architecture, RTOS, hardware/firmware integration, U.S. citizenship, and ability to obtain Interim Secret clearance.
C++, Embedded C++, Real Time Operating Systems (RTOS), Green Hills, Integrity, Wind River VxWorks, Linux, FPGA, VHDL, Verilog, Microsoft Windows
1mo
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Principal Software Engineer with Test Solutions
Tucson, Arizona, United States
$108k-$205k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Aerospace and defense providing advanced technology solutions.
8+ YOEBachelor's in STEM with typically 8+ years experience (or advanced degree with 5+ years), U.S. citizenship and ability to obtain DoD Secret clearance, experience with C++, C#, Java, Python, Visual Basic, Microsoft Visual Studio, Windows OS, and test/instrumentation preferred.
C#, C++, Java, Python, Visual Basic, Microsoft Visual Studio, Windows Operating System, Microsoft Azure DevOps Server, GitHub, Unified Modeling Language (UML), TCP/IP, UDP, RS-422, oscilloscopes, power supplies, digital multimeters
2mo
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Principal Systems Engineer – Software Systems (Onsite)
Tucson, Arizona, United States
$108k-$205k/yr OnsiteFull Time
Collins Aerospace
Collins Aerospace: Aerospace and defense systems manufacturer and service provider for airlines, aircraft operators and governments.
8+ YOEU.S. citizenship and DoD Secret clearance required; Bachelor’s in STEM and minimum 8 years engineering experience; systems engineering, MBSE, requirements development/verification, and embedded software integration/test experience.
Model-Based Systems Engineering (MBSE), Cameo, DOORS, cPDM, Azure DevOps, Matlab, C, C#, C++, Python
1mo
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Principal Real-time Software Engineer
Tucson, Arizona, United States
$108k-$205k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Aerospace and defense providing advanced technology solutions.
8+ YOESTEM degree typically required with minimum 8 years relevant experience; active transferable Secret U.S. government clearance and U.S. citizenship required; experience with embedded C++, RTOS, hardware/firmware integration, and mentoring.
Embedded C++, Green Hills, Integrity, Wind River VxWorks, Linux, VHDL, Verilog
1mo
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Principal Software Architect
Tucson, Arizona, United States
$156k-$190k/yr OnsiteFull Time
NSF NOIRLab
NSF NOIRLab: NSF-funded nonprofit-operated astronomy laboratory providing ground-based observatories, data products, and services to the astronomical community.
15+ YOE15+ years software engineering experience; expertise in distributed, cloud-native, containerized and HPC systems; strong architecture, API, DevSecOps, IaC, and AI/ML experience; excellent communication and mentorship skills.
HPC, DevSecOps, CI/CD, Infrastructure as Code (IaC), AI, ML, LLM, API
1mo
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Principal Software Architect
Tucson, Arizona, United States
$156k-$190k/yr OnsiteFull Time
NSF NOIRLab
NSF NOIRLab: NSF-funded nonprofit-operated astronomy laboratory providing ground-based observatories, data products, and services to the astronomical community.
15+ YOE15+ years software engineering experience with large-scale distributed, cloud-native, HPC, and data-intensive systems; strong architecture, API, DevSecOps, and AI/ML experience; excellent communication and mentoring skills.
HPC, API, DevSecOps, CI/CD, Infrastructure as Code (IaC), observability, AI, machine learning (ML), generative AI, large language model (LLM)
1mo
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Senior Principal Engineer: Performance Analysis Software and Simulation (PASS) Integrated Product Team Lead (IPTL) (Onsite)
Tucson, Arizona, United States
$132k-$252k/yr OnsiteFull Time
Collins Aerospace
Collins Aerospace: Aerospace and defense systems manufacturer and service provider for airlines, aircraft operators and governments.
10+ YOESTEM degree and 10+ years experience leading software, performance analysis, modeling, and simulation teams; experience with EVMS, multi-million-dollar budgets, and PM Level 4 certification target; active transferable SECRET clearance and U.S. citizenship required.
Earned Value Management System (EVMS), Agile
1d
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(Confluent) Senior Principal Engineer II, Kafka
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 or Georgia or Minnesota or Texas or New York or North Carolina or Arizona or Washington or Massachusetts or California or United States
$192k-$358k/yr RemoteFull Time
IBM
IBMNYSE: IBM: Global technology and consulting focusing on cloud and AI.
Bachelor's degree required; master's preferred. Requires expertise in distributed systems, Apache Kafka or equivalent streaming systems, large-scale architecture, SRE practices, technical leadership, and mentorship.
Apache Kafka, AWS, GCP, Azure
4w
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Principal Systems Engineer – Software Systems Engineer (Onsite)
Tucson, Arizona, United States
$108k-$205k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Aerospace and defense providing advanced technology solutions.
8+ YOEBachelor's in STEM and minimum 8 years engineering experience, U.S. citizenship, active transferable Top Secret clearance, MBSE/requirements and integration/test experience, Agile familiarity.
Cameo, DOORS, cPDM, Azure DevOps, Matlab, C, C#, C++, Python
1mo
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Principal AI Engineer
Tucson, Arizona, United States
$179k-$226k/yr OnsiteFull Time
NSF NOIRLab
NSF NOIRLab: NSF-funded nonprofit-operated astronomy laboratory providing ground-based observatories, data products, and services to the astronomical community.
15+ YOE15+ years of AI/software engineering experience; experience designing and deploying production-scale AI, LLM, RAG, and agent systems; strong cloud-native and infrastructure background; leadership and communication skills.
LLMs, Retrieval-Augmented Generation (RAG), AI agents, HPC
1mo
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Principal AI Engineer
Tucson, Arizona, United States
$179k-$226k/yr OnsiteFull Time
NSF NOIRLab
NSF NOIRLab: NSF-funded nonprofit-operated astronomy laboratory providing ground-based observatories, data products, and services to the astronomical community.
15+ YOE15+ years in AI/software engineering with experience designing, building, and deploying production-scale AI/ML systems, LLM/RAG/agent experience, cloud-native and HPC familiarity, and strong leadership and communication skills.
large language models (LLMs), Retrieval-Augmented Generation (RAG), AI agents, generative AI, machine learning, HPC, foundation models
1mo
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Principal Software Metrics Lead
McKinney or Tucson or Tewksbury or Aurora
$108k-$205k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Aerospace and defense providing advanced technology solutions.
8+ YOEBS/BA STEM, minimum 8 years engineering experience, ability to obtain Secret security clearance (U.S. citizenship required), experience with performance measurement, cost estimation, data visualization, and cross-functional collaboration.
PowerBI, Grafana, GenAI