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32 principal engineer software development jobs at 24 companies in Temecula, CA

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Principal Software Development Engineer
Escondido or San Diego
$140k-$200k/yr HybridFull Time
One Stop Systems
One Stop SystemsNASDAQ: OSS: Public U.S. manufacturer of rugged edge-computing hardware and software for AI, sensor processing, autonomy, defense, and industrial customers.
5+ YOEB.S. in Software Engineering and 5+ years' experience. Strong TypeScript, Angular, RxJS, web APIs, testing, Git, and debugging skills; excellent communication and problem-solving.
HTML DOM, Fetch, XHR, Storage, UI Events, Navigation, TypeScript, ReactiveJS (RxJS), AI-assisted programming tools, Angular 14+, PrimeNG, Chart.js, Cypress, Git, Microsoft Office Suite, Adobe Acrobat, Revit, AutoCAD
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2d
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Senior Principal Engineer – Software Development (Medical Devices)
Irvine, California, United States
$125k-$206k/yr OnsiteFull Time
BD
BDNYSE: BDX: Manufactures medical devices, surgical instruments, and pharmacy automation systems.
10+ YOEBachelor’s degree and 10+ years of software development experience required; expertise in C#, C/C++, real-time signal processing, system integration, and regulated product development.
C#, C, C++, Windows, Linux, Python, MATLAB, Azure DevOps, Pipelines, Visual Studio, PyCharm, Git, CI/CD
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Principal Software Engineer
Irvine, California, United States
$118k-$218k/yr OnsiteFull Time
Cadence Design Systems
Cadence Design SystemsNASDAQ: CDNS: Develops computational software and hardware for electronic system design.
PhD in a related engineering field plus expertise in nonlinear mechanics, finite element analysis, numerical methods, and software development using Fortran, C/C++, Python, Linux shell scripting, and commercial FEA software.
MSC Nastran, Marc, Microsoft Word, Microsoft Excel, Fortran, C, C++, Python, Linux
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Principal Software Developer
Santa Ana, California, United States
$170k-$180k/yr HybridFull Time
HomeXpress Mortgage
HomeXpress Mortgage: Provides non-qualified mortgage and residential lending services.
7+ YOERequires 7+ years of software development, 5+ years with C#/.NET and PHP, enterprise applications and APIs, Agile/Scrum, DevOps, CI/CD, troubleshooting, and a relevant bachelor's degree.
C#, .NET, PHP, Azure, DevOps, CI/CD, Agile, Scrum, SOA, Microsoft
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Principal, Software Engineer
Lake Forest, California, United States
$128k-$166k/yr OnsiteFull Time
Alcon
AlconNYSE: ALC: Manufactures ophthalmic surgical equipment and vision care products.
5+ YOE5+ years relevant experience, Bachelor’s degree or equivalent, fluent English, C++/C# development, RTOS and Windows experience, familiarity with medical device software lifecycle and regulations.
C++, C#, MATLAB, LabVIEW, Microsoft Word, Microsoft Excel, Microsoft Visio, Microsoft Visual Studio, AWS DevOps, Jira, Git, ADO, GitHub, TFS
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Principal Software Engineer
Costa Mesa, California, United States
$165k-$283k/yr RemoteFull Time
Siemens
SiemensXETRA: SIE: Manufactures industrial automation, infrastructure, and energy technology systems.
10+ YOE10+ years of software development experience; distributed systems and real-time applications expertise; technical strategy and architecture leadership; backend language proficiency; system design, optimization, and fault-tolerance skills.
Python, Go, TypeScript, PyTorch, Hugging Face, ONNX Runtime, LangChain, AWS, Kubernetes, Redis, PostgreSQL, Amazon S3, Terraform, GitHub Actions, Datadog, Grafana, Prometheus
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Principal Software Engineer
Austin or Irvine or Dallas
$134k-$185k/yr HybridFull Time
Cotality
Cotality: Provider of property intelligence, data, and analytics solutions.
5+ YOEBachelor's degree required, 5+ years software development experience, strong SDLC and architecture skills, cross-stack programming, experience driving adoption of tools and AI-assisted workflows (GitHub Copilot, LLM APIs, agent frameworks), strong communication and leadership.
GitHub Copilot, LLM APIs, agent frameworks, SDKs
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Principal Software Engineer
Columbus or Irvine or United States or New York City
RemoteFull Time
Avandra Imaging
Avandra Imaging: Federated network for de-identified medical imaging and clinical data.
12+ YOE12+ years engineering experience, distributed systems expertise, technical leadership, cloud-native systems, CI/CD, observability, automated testing, infrastructure as code, databases, and regulated healthcare environments.
CI/CD, Docker, Kubernetes, AWS, HIPAA
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Principal Software Engineer
Columbus or Irvine or United States
HybridFull Time
Aegis Ventures
Aegis Ventures: Venture studio building healthcare and artificial intelligence companies.
12+ YOE12+ years engineering experience, distributed systems expertise, technical leadership, CI/CD, observability, automated testing, infrastructure as code, Docker, Kubernetes, cloud systems, databases, and regulated healthcare experience.
CI/CD, Docker, Kubernetes, AWS, HIPAA
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Principal Software Engineer (Python)
Irvine or Oklahoma City or Sunrise or Oxford or Dallas or Austin
$155k-$180k/yr HybridFull Time
Cotality
Cotality: Provides property data, analytics, and workflow intelligence solutions.
10+ YOEMaster's or Bachelor's in CS/AI (required), 10+ years software engineering, expert Python/FastAPI, semantic/graph and RAG experience, cloud (GCP/AWS/Azure), Git/Unix, ADK, vector DBs, strong communication and leadership.
Git, Unix, Python, FastAPI, FastMCP, ADK, Vector Databases, GraphRAG, RAGAS, DeepEval, HyDE, GCP, AWS, Azure
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Principal / Senior Staff Software Engineer ( 5G PHY )
San Diego, California, United States
$200k-$230k/yr OnsiteFull Time
Globalstar
GlobalstarNYSE American: GSAT: Global provider of satellite communications and IoT connectivity solutions.
10+ YOEBachelor’s degree in computer science, computer engineering, or related field; 10+ years C/C++ software development; 7+ years 5G/LTE PHY software and algorithms; 5+ years real-time Linux development.
C, C++, Linux, Wireshark, tcpdump, Microsoft Office, NetSuite
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Principal, Software Engineer - Java Developer
Irvine, California, United States
$133k-$227k/yr OnsiteFull Time
Ingram Micro
Ingram MicroNYSE: INGM: Global technology wholesale distribution and supply chain services provider.
8+ YOEBachelor's degree in computer science or a related science, math, or IT discipline; 8+ years of technical experience; strong Java, Spring, API, database, software design, and testing skills.
Java, Spring Boot, Spring MVC, Spring Security, Hibernate, JPA, Oracle, MySQL, PostgreSQL, REST, SOAP, Kafka, RabbitMQ, Git, Maven, Gradle, CI/CD, Docker, Kubernetes, GCP, AWS, Azure
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Software Engineer Principal
San Diego, California, United States
HybridFull Time
SAIC
SAICNASDAQ: SAIC: Provides government and defense clients with technology and engineering services.
7+ YOEBachelor's with 9 years or master's with 7 years; US citizenship; Top Secret clearance and ability to obtain TS/SCI; IAT Level 1 certification; full-stack, cloud, database, Linux, and shell scripting experience.
Java, JavaScript, Python, Node.js, D3.js, React, AWS, Microsoft Azure, SQL, Linux, Shell, PostgreSQL, MongoDB, Apache NiFi, Kubernetes, ETL
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Principal, Software Engineer - Subscriptions
Irvine, California, United States
$133k-$227k/yr HybridFull Time
Ingram Micro
Ingram MicroNYSE: INGM: Distributes information technology products and provides supply chain solutions.
10+ YOE10-15 years technical experience; 5+ years web services development; strong Java 8+; REST APIs; Spring Boot; JPA/Hibernate/JDBC; Maven; Git; Agile tools; GCP; DevOps mindset; front-end options like Python/NodeJS a plus
Java, Spring Boot, JPA/Hibernate, JDBC, JUnit, Maven, SonarQube, Git, SVN, JIRA, Confluence, XML, JSON, SOAP, REST, GCP, Splunk, DataDog, Python, Node.js, Bootstrap, Material-UI
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Software Engineer/Principal Software Engineer – Data Analyst
Rancho Bernardo or Palmdale or San Diego
$92k-$138k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
2+ YOEBachelor’s or Master’s in STEM with relevant experience; strong SW development with Python/Java/C++/MATLAB; AI/ML, databases, containers, DevOps, CI/CD; active Top Secret clearance.
Python, Java, C++, MATLAB, SQL, Parquet, Neo4j, Elasticsearch, MongoDB, Kubernetes, Docker, OpenShift, Ansible, Bash, PowerShell, Puppet, Grafana, Elastic Stack, Jira, Confluence, Bitbucket
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Principal Software Engineer, Vehicle Analysis (Thermal)
Irvine, California, United States
$175k-$225k/yr HybridFull Time
Turion Space
Turion Space: Private U.S. space infrastructure building spacecraft, mission software, and payloads for government and commercial customers.
10+ YOEBachelor’s degree in a technical field; 10+ years with demonstrated technical leadership for principal level; expert Python, scientific computing, thermal analysis, CAE automation, HPC or cloud batch systems, testing, CI/CD, and version control.
Python, NumPy, Thermal Desktop, SINDA, OpenTD, Ansys, STK, Slurm, AWS Batch, CAD, HPC, CI/CD
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Principal Embedded Software Engineer
Irvine, California, United States
$180k-$220k/yr OnsiteFull Time
Silvus Technologies
Silvus TechnologiesNYSE: MSI: Develops advanced mobile ad-hoc network radios for mission-critical communications.
8+ YOEBachelor's in EE/CS, 8+ years embedded software experience, expertise in embedded Linux on ARM, C programming, Linux kernel driver development; U.S. citizenship required; background check and drug test contingent.
C, Linux, Linux kernel, ARM, RISC-V, AMD UltraScale+ MPSoC, Microchip PolarFire SoC, UltraScale+, IPsec, Internet/Ethernet, socket programming, NIST FIPS 140-3, NIAP Common Criteria, MANET, MN-MIMO
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Principal Mobile Engineer
Carlsbad, California, United States
$160k-$180k/yr OnsiteFull Time
Nice North America
Nice North America: Manufacturer of smart home and building automation systems.
8+ YOE8+ years in mobile app development (iOS/Android) with React Native, quality code, and cross-region collaboration.
React Native, iOS, Android, AWS, Jira, Confluence, Bitbucket, Figma, Sentry, CI/CD
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Principal Engineer – Embedded Systems & Security
Irvine, California, United States
$185k-$230k/yr HybridFull Time
Karma Automotive
Karma Automotive: Privately owned American ultra-luxury automaker producing electric and extended-range electric vehicles for luxury buyers.
10+ YOEBachelor’s or Master’s degree in a related field, 10+ years in automotive software architecture or systems engineering, cloud and embedded development expertise, ISO 26262 and ISO 21434 experience, and cybersecurity leadership preferred.
Kubernetes, C, C++, Python, Java, Rust, Go, AUTOSAR, RTOS, CAN, Ethernet, SOME/IP, DDS, MQTT, REST, gRPC, AWS, Azure, Simulink, Model-Based Systems Engineering (MBSE), UDS, DoIP, CI/CD
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Principal Engineer - FullStack – Catalog
Irvine, California, United States
$130k-$135k/yr OnsiteFull Time
Tech Mahindra
Tech MahindraNSE: TECHM: Global provider of IT services, consulting, and business solutions.
12+ YOEBachelor's degree required; 12+ years software engineering with principal-level leadership, expertise in backend languages and modern frontend frameworks, high-scale distributed systems, and AI-assisted development.
C#/.NET, Go, Java, Python, React, Copilot, Claude Code, Cursor
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