81 principal software engineer jobs at 25 companies in Santa Paula, CA
2mo
Save
Mark Applied
Hide
Principal Software Engineer
New York or Santa Monica
$188k-$265k/yr HybridFull Time
10+ YOE10+ years in software engineering with architecture and distributed systems; cloud (AWS); Java/Python; microservices; API design; hands-on coding.
AWS, S3, DynamoDB, Kinesis, Kafka, Java, Python, API Design, Microservices, Distributed Systems, Cloud
2mo
Save
Mark Applied
Hide
Principal Software Engineer
New York or Santa Monica
$197k-$265k/yr HybridFull Time
10+ YOE10+ years in software engineering with architecture and distributed systems; BS in CS/IS/ENG or related field; strong cloud, microservices, API design; proficient in Java/Python; hands-on coding; excellent communication.
AWS, S3, DynamoDB, Kinesis, SQS, Kafka, Java, Python, Microservices, APIs, Data modeling, Design patterns
2mo
Save
Mark Applied
Hide
Principal / Sr. Principal Software Engineer - Software Assurance
El Segundo, California, United States
$114k-$213k/yr OnsiteFull Time
5+ YOEUS citizenship and ability to obtain SAP clearance, STEM degree, 5+ years engineering experience (Principal) or higher for Sr. Principal; experience with Java/JavaScript/C++/C#/Python/Swift, Git-family SCM, and software development lifecycle required.
Java, JavaScript, C++, C#, Python, Swift, Git, GitLab, GitHub, Bitbucket, Subversion, AWS, VMware, Azure, Kubernetes, Risk Management Framework (RMF), NIST SP 800-53r5
2mo
Save
Mark Applied
Hide
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
Save
Mark Applied
Hide
Principal Embedded Software Engineer
El Segundo, California, United States
$201k-$314k/yr OnsiteFull Time
8+ YOELead embedded software architecture for I&C systems; 8+ years; onsite in El Segundo; RTOS experience; C/C++.
Zephyr RTOS, NuttX, ThreadX, Embedded C, C++, CMake, Simulink Autocode C++ export
3w
Save
Mark Applied
Hide
Principal Software Engineer
Santa Monica or Los Angeles or New York City or Bellevue or Seattle or San Francisco or Palo Alto
$235k-$414k/yr OnsiteFull Time
10+ YOE10+ years software development experience, technical leadership experience, BS in a technical field (or equivalent), experience architecting distributed systems, strong software design and debugging skills, proficiency using AI tools and modern engineering workflows.
3w
Save
Mark Applied
Hide
Principal Software Engineer
Canada or El Segundo
RemoteFull Time
10+ YOE10+ years software engineering experience, staff-level technical leadership, proficiency with .NET, SQL/SQL Server, and Angular; experience with CI/CD, TDD, observability, and Git; Bachelor's or equivalent.
SQL, SQL Server, .NET, Angular, Git, SonarQube, Mend, CI/CD, TDD
2mo
Save
Mark Applied
Hide
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
Save
Mark Applied
Hide
Principal Radar Software Engineer
Agoura Hills, California, United States
OnsiteFull Time
10+ YOEBachelor's degree in computer engineering, computer science, or electrical engineering and 10+ years' experience with embedded software, radar signal processing, C++, MATLAB, DSPs, data analysis, and software integration.
MATLAB, C++, Git, SVN, ROS, CUDA, CAN, Ethernet, Microsoft Azure, Amazon Web Services (AWS), Python, Hardware-in-the-Loop, Software-in-the-Loop
1mo
Save
Mark Applied
Hide
Principal Software Engineer
El Segundo, California, United States
$150k-$190k/yr HybridFull Time
10+ YOEAbility to obtain DoD Secret clearance; Bachelor's in CS/SE/CE; 10+ years software development; expertise in distributed systems, full‑stack development, Angular, Kafka, event-driven architectures, DevSecOps and CI/CD.
Angular, Kafka, Kafka Streams, Apache Flink, RabbitMQ, NATS, OpenTelemetry, Prometheus, Grafana, ELK, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Kubernetes, CI/CD, DevSecOps
2mo
Save
Mark Applied
Hide
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
1mo
Save
Mark Applied
Hide
Principal Software Engineer, Ads Platform
Palo Alto or New York City or Bellevue or Santa Monica or Seattle or San Francisco
$235k-$414k/yr OnsiteFull Time
10+ YOEBachelor's in technical field or equivalent experience; 10+ years software development; 2+ years technical leadership; experience architecting distributed systems and operating highly-available services; strong software design and collaboration skills; ads domain experience preferred.
1mo
Save
Mark Applied
Hide
Principal Radar Software Engineer
Agoura Hills, California, United States
OnsiteFull Time
10+ YOEBachelor's in Computer Engineering/Computer Science/Electrical Engineering; 10+ years embedded/parallel processing/C++/MATLAB experience; radar signal-processing, DSP optimization, logging, integration, and revision-control knowledge.
MATLAB, C++, git, svn, ROS, CUDA, Azure, AWS, Python, DSP, CAN, Ethernet, Hardware-in-the-Loop, Software-in-the-Loop
2mo
Save
Mark Applied
Hide
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
5d
Save
Mark Applied
Hide
Principal Engineer - Full Stack
Agoura Hills, California, United States
$135k-$145k/yr HybridFull Time
7+ YOERequires 7+ years of software engineering experience, strong programming and architecture skills, and hands-on experience with at least three of Python, PostgreSQL, AWS, MuleSoft, and JavaScript. Git, CI/CD, communication, and mentoring skills required.
Salesforce, MuleSoft, Informatica Cloud, Python, PostgreSQL, AWS, JavaScript, Apex, Lightning/LWC, Anypoint Platform, DataWeave, Git, CI/CD, APIs, Informatica
3d
Save
Mark Applied
Hide
Principal Embedded Software Engineer
Moorpark, California, United States
$147k-$224k/yr OnsiteFull Time
12+ YOEBachelor's degree or equivalent experience; 12–15 years of relevant experience; proficiency in Python, C, C++11, C++ STL, or OpenCL; embedded Linux/ARM driver development and troubleshooting experience.
Python, C, C++11, C++ STL, OpenCL, Microsoft Visual Studio, Eclipse, RS-485, RS-232, CAN, I2C, SPI, USB, JIRA, SVN, Bitbucket, GitLab, STM32, RTOS, µC/OS, freeRTOS, Video 4 Linux, Embedded Linux, Linux, ARM, Robot Operating System (ROS), Test Driven Development (TDD)
1mo
Save
Mark Applied
Hide
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
2mo
Save
Mark Applied
Hide
Principal Structural Engineer - Buildings
Los Angeles, California, United States
$146k-$228k/yr OnsiteFull Time
10+ YOEBachelor's degree in engineering with 10 years' relevant experience, or equivalent master's/PhD pathways. PE and SE licenses preferred; structural analysis software experience preferred.
ETABS, SAP 2000, ADAPT, RISA, Revit, Autodesk, Bluebeam
2w
Save
Mark Applied
Hide
Experienced principal blockchain engineer with payment and exchange building experience
Santa Monica, California, United States
OnsiteFull Time
5+ YOE5+ years blockchain experience building dApps, smart contracts, crypto payments, wallets, and scalable Layer 2 solutions; experience with exchanges or gambling platforms preferred.
Ethereum, Binance Smart Chain, Solana, Solidity, Rust, JavaScript, Node.js, Python, Go, Mythril, Slither, MetaMask, Trust Wallet, Optimistic Rollups, zk-Rollups, Django, Express.js, Stake.com
3mo
Save
Mark Applied
Hide
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
Explore Jobs