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Sr. Principal Software Engineer
Woodland Hills, California, United States
$142k-$213k/yr OnsiteFull Time
5+ YOERequires Top Secret clearance, STEM degree, 5+ years software experience (8+ for Sr. Principal), proficiency in C/C++/C#/Java, CI/CD and Git, experience with Windows/Linux and CI/CD pipelines.
C, C++, C#, Java, Java Server Pages (JSP), Windows Server, Linux, Docker, Kubernetes, Git, CI/CD, MLOps
2mo
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Principal Software Engineer
San Diego or Valencia
$107k-$203k/yr HybridFull Time
8+ YOE8+ years Android app development; 2+ years in medical devices; Kotlin/Java; AWS; IEC 62304/ISO 13485/FDA design controls; strong cross-functional collaboration.
Kotlin, Kotlin Multiplatform, Java, Android Jetpack, BLE, AWS, OAuth, Git, Jenkins, SonarQube, Atlassian Agile tools, API Gateway, Cognito, DynamoDB, S3, EC2, KMS, REST
2mo
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Principal Software Test Engineer, Onsite
Goleta, California, United States
$118k-$225k/yr OnsiteFull Time
8+ YOELead software testing, design test configurations, manage budget/schedule, onsite Goleta role; must obtain/maintain Secret DoD clearance; 8+ years in STEM; team leadership
Jenkins, Jira, DevSecOps, Test Automation
1mo
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Principal Software Engineer - AI
Woodland Hills or Los Angeles or Alabama or Arizona or California or Colorado or Connecticut or Florida or Georgia or Illinois or Indiana or Kentucky or Massachusetts or Michigan or North Carolina or New Jersey or Nevada or New York or Ohio or Pennsylvania or South Carolina or Texas or Utah or Virginia
$200k-$230k/yr HybridFull Time
10+ YOE10+ years software engineering experience, 5+ years backend work in Python or PHP, expertise building LLM-based AI agent systems, production LLM API integration, MySQL proficiency, and automated testing for AI workflows.
LLM, OpenAI, Claude, GitHub Copilot, MySQL, Python, Django, Flask, PHP, Symfony, Laravel, React
1mo
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Principal Software Engineer
Tampa or Thousand Oaks
$157k-$212k/yr HybridFull Time
2+ YOEDeep expertise in ML/Generative AI, MLOps/LLMOps, cloud platforms, and scalable system architecture; proven track record delivering production-grade ML systems; advanced proficiency in Python and modern ML frameworks; degree + experience combinations required.
MLflow, Kubeflow, Airflow, CI/CD, Docker, Kubernetes, AWS, GCP, Azure, Python, PyTorch, TensorFlow, Hugging Face, LangChain, Databricks, Spark, Hadoop, Apache Spark, Apache Airflow, OLAP, OLTP
2mo
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Principal Software Engineer - Mobile Development
Valencia or San Diego or San Jose
$107k-$203k/yr HybridFull Time
8+ YOEBachelor's degree in CS/Software Engineering, 8+ years Android mobile development (≥2 years medical device apps), 3+ years AWS experience, expertise with Kotlin/Java/Android Jetpack, BLE and secure protocols, knowledge of medical device software standards.
Kotlin, Kotlin Multiplatform, Java, Android Jetpack, MVVM, Rx, XML data binding, Bluetooth Low Energy (BLE), AWS KMS, AWS S3, AWS DynamoDB, AWS Cognito, API Gateway, AWS EC2, AWS CloudWatch, Jenkins, Git, SonarQube, Atlassian Agile tools, TensorFlow, Pandas, NumPy, R, HTTPS, OAuth
4w
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Principal GNC Engineer
Simi Valley, California, United States
$155k-$170k/yr OnsiteFull Time
15+ YOEMaster's/PhD in engineering, U.S. citizenship and DoD Secret clearance, 15+ years GNC experience in missile/aerospace systems, GNC algorithm development, software integration, testing, Agile/Waterfall experience, MS Office proficiency.
MS Office
3mo
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Principal Machine Learning Engineer
Santa Barbara or San Diego or Denver
$264k-$330k/yr HybridFull Time
10+ YOESenior ML/AI leader with 10+ years building production ML systems; deep learning and traditional ML expertise; strong software delivery.
Python, PyTorch, NumPy, AWS, Docker, SQL, Embeddings, RAG, LangChain, LangGraph, LangSmith, Copilot
2w
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Principal Staff Engineer - Web Platform
Calabasas, California, United States
$130k-$195k/yr HybridFull Time
7+ YOE7+ years full-stack engineering with LAMP, deep AWS/cloud operations, high-traffic ecommerce experience, production troubleshooting, distributed systems knowledge, and technical leadership; Mandarin communication desirable.
LAMP, Linux, Apache, MySQL, PHP, AWS, EC2, RDS, S3, Lambda, CloudWatch, Git, CI/CD, CDN, Slack, Zoom
1mo
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Principal Guidance-Navigation-Controls Engineer
Ventura, California, United States
$235k-$260k/yr OnsiteFull Time
15+ YOEBachelors (Master's preferred) in CS/Robotics/Aerospace/Mechanical, 15+ years developing autonomy algorithms for undersea vehicles, GNC experience, simulation expertise, strong MATLAB/Simulink and software skills, excellent communication.
MATLAB, Simulink
2w
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Data Scientist, Principal
Oakland or Washington or Ohio or District of Columbia or California or Long Beach or Arizona or Colorado or Connecticut or Florida or Georgia or Maryland or Minnesota or Nevada or Oregon or El Dorado Hills or San Diego or Woodland Hills or Alabama or Illinois or Virginia or Wisconsin or Texas or New York
$182k-$273k/yr HybridFull Time
8+ YOEAdvanced experience in applied AI/ML and software development, strong Python engineering, hands-on with deep learning and LLM frameworks, experience building production AI applications and leading ML design.
Python, PyTorch, TensorFlow, LangChain, LangGraph, SQL, Spark, Azure, Google Cloud, AWS
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