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81 principal engineer software development jobs at 38 companies in Fontana, CA

3mo
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Principal Software Engineer
Huntington Beach or San Francisco
$220k-$265k/yr OnsiteFull Time
Mach Industries
Mach Industries: Designs and manufactures autonomous unmanned aerial vehicles for defense.
10+ YOE10+ years leading large-scale software projects; expert in C++, Rust, Python or C; real-time/embedded systems experience.
C++, Rust, Python, C, RTOS, embedded systems
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1d
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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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2w
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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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1mo
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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
Snap
SnapNYSE: SNAP: Provides visual messaging software and augmented reality wearable devices.
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.
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3mo
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Principal Software Development Engineer in Test
New York or Glendale
$172k-$241k/yr HybridFull Time
The Walt Disney Company
The Walt Disney CompanyNYSE: DIS: Produces movies, operates theme parks, and provides streaming services.
10+ YOE10+ years in quality engineering or software development; leadership; experience scaling test automation.
Python, OO languages, Test automation, Cloud-native testing
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5d
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Principal Software Engineer
Plano or Boston or Portsmouth or Indianapolis or Columbus or United States or Los Angeles or Philadelphia or San Francisco
$137k-$257k/yr HybridFull Time
Liberty Mutual
Liberty Mutual: Provides diversified property, casualty, and commercial insurance products.
8+ YOERequires 8+ years of software engineering experience, enterprise architecture and technical leadership, distributed systems expertise, cloud-native development, and proficiency with JavaScript/TypeScript, React, Node.js, and related tools.
JavaScript, TypeScript, React, Node.js, Next.js, Java, HTML/CSS, Micro Frontends, AWS, CDK, GitHub Actions, OAuth 2.0, OpenID Connect, OWASP Top 10, Playwright, JMeter, Datadog, Splunk, Bridgeway, MFE, CI/CD, DevOps, SecOps, Generative AI
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6d
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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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1mo
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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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1w
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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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2mo
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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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3mo
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Principal Software Engineer, AI Enablement - Central Product
Los Angeles, California, United States
$229k-$320k/yr OnsiteFull Time
Riot Games
Riot Games: Developing and publishing competitive multiplayer video games.
8+ YOEBS in Computer Science (or equivalent) with 8-12 years of software engineering; strong systems integration and technical leadership; expert in C++ and another language (Python or C#); experience with AAA games or large-scale live services; AI tooling experience.
C++, Python, C#, Unreal Engine, ML frameworks (e.g., PyTorch, TensorFlow), AI tools and APIs
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6d
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Principal Software Engineer, Connectivity
Brea, California, United States
$165k-$187k/yr HybridFull Time
RAVE Aerospace
RAVE Aerospace: Developing in-flight entertainment and connectivity systems for airlines.
15+ YOE10+ MgmtBachelor’s degree or equivalent practical experience; 15+ years developing software, 10+ years managing software projects, embedded/networked systems experience, technical leadership, and cross-functional collaboration.
C, C++, Python, JavaScript, HTML, Go
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5d
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Principal, Software Engineer
New York or California or Illinois or Atlanta or Boston or Chicago or Denver or Los Angeles or New York or Salt Lake City or San Diego
$122k-$165k/yr RemoteFull Time
DEPT
DEPT: Global digital agency providing integrated technology and marketing services.
7+ YOERequires 7+ years software experience, 3+ years Python, expert backend and distributed systems knowledge, cloud and Docker experience, API integration, databases, frontend architecture, CI/CD, and technical leadership.
Python, Gemini CLI, Claude Code, Codex, Angular, TypeScript, Google Cloud, AWS, Azure, Docker, Git, Mercurial, Agile, CI/CD, Google's Agent Development Kit (ADK), SQL, NoSQL, LLM
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2w
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Principal Software Engineer - Observability
New York City or Glendale
$193k-$259k/yr HybridFull Time
The Walt Disney Company
The Walt Disney CompanyNYSE: DIS: Produces media content and operates global theme parks.
10+ YOEBachelor’s degree or equivalent experience; 10+ years of software engineering; AI/ML, scalable APIs, cloud platforms, observability, agentic workflows, CI/CD, microservices, and technical leadership experience.
FastAPI, Flask, Anthropic, OpenAI, Google, Meta, Claude, Qwen, LangChain, LangGraph, AWS, Microsoft Azure, GCP, Cursor, Claude Code, GitHub, Docker, AWS/EKS, Datadog, Grafana, Conviva, OpenTelemetry (OTel), AWS Bedrock, PySpark, Pandas, Databricks, Snowflake, GPT
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2w
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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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1mo
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Principal Software Engineer
Los Angeles or United States
$143k-$190k/yr RemoteFull Time
GDIT
GDITNYSE: GD: Delivers IT and mission services to government agencies.
5+ YOEUS citizen able to obtain Public Trust 6C, 5+ years related experience, proven distributed systems and backend architecture skills, experience with microservices, cloud, observability, and mentoring engineers.
Java, Python, AWS, Azure, GCP, Kubernetes, ECS, Terraform, CloudFormation, Kafka, SQS, EventBridge, REST, GraphQL
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2w
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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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2mo
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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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1mo
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Principal Software Engineer, Gameplay - Teamfight Tactics
Los Angeles, California, United States
$229k-$320k/yr OnsiteFull Time
Riot Games
Riot Games: Develops and publishes video games and esports content.
10+ YOE10+ years software development; 4+ years Unreal Engine; expert C++ and gameplay engineering; BS in Computer Science or equivalent fundamentals; collaboration, mentoring, and multi-platform experience.
Unreal Engine, C++, Android, iOS
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3mo
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Principal, Software Engineer - Java Developer
Irvine, California, United States
$133k-$227k/yr OnsiteFull Time
Ingram Micro
Ingram MicroNYSE: INGM: Global distributor of technology products and supply chain solutions.
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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