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84 principal software engineer jobs at 48 companies in Riverside, CA

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Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
Help us #BeatIndeed & #BeatLinkedIn
2mo
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Principal Engineer, Mission Software
Arvada or Los Angeles or San Francisco or Seattle or Washington
HybridFull Time
Quindar
Quindar: Cloud-native software for automated satellite mission operations.
8+ YOE3+ MgmtLead complex software and systems engineering in aerospace/defense; architecture focus; leadership; government programs; security clearance readiness.
Programming, Software Architecture, Distributed Systems, APIs, Operator tooling, Mission-critical applications
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3mo
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Principal Software Engineer
Hawthorne or El Segundo or Los Angeles
$200k-$400k/yr OnsiteFull Time
Freeform
Freeform: Deploys autonomous AI-powered metal 3D printing factories.
10+ YOE10+ years of hands-on experience building complex software systems (C/C++/Rust) in autonomy-focused environments.
C/C++, Rust, FPGAs, GPUs, edge computing, real-time control
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2mo
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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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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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1mo
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Senior Principal Software Engineer (ONSITE)
Fort Wayne or Largo or Richardson or Ontario or Cedar Rapids
$132k-$252k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
10+ YOEU.S. citizenship and ability to obtain/maintain a DoD Secret clearance; typically requires a STEM degree and 10+ years experience (or advanced degree and 7+ years). Experience with C/C++, Java, embedded/Linux/real-time systems, DevSecOps, CI/CD, MBSE, and secure software practices.
C/C++, Java, Linux, DevSecOps, CI/CD, Scrum, SAFe, MBSE, UML, SysML, DO-178
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2mo
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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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3w
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Principal / Sr. Principal Software Engineer (C++ and TS Clearance)
Los Angeles, California, United States
$114k-$213k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Designs and manufactures advanced aerospace and defense systems.
5+ YOEActive DoD Top Secret clearance (transferable), willingness to work onsite full-time, 5+ years software experience (Principal) or 8+ years (Sr Principal), proficiency in C/C++ and modern C++ standards, CI/CD and Git experience, ability to meet security screening.
C, C++, C++ 17, C++ 20, CI/CD, MLOps, Git, Docker, Kubernetes, Linux, CUDA, GPUs, DevSecOps, Agile, Scrum, Model-based Engineering
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1w
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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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1mo
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Principal Software Engineer
Austin or Irvine or Dallas
$134k-$185k/yr HybridFull Time
Cotality
Cotality: Provides property data, analytics, and workflow intelligence solutions.
5+ YOEBachelor's in CS or related, 5+ years software development experience, strong SDLC and scalable systems experience, multi-language programming, AI-assisted development familiarity, technical leadership and strong communication.
GitHub Copilot, LLM APIs, agent frameworks, AGENTS.md, SDKs, Zoom, Microsoft Teams
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1mo
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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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3w
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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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3w
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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
Convoso
Convoso: AI-powered contact center platform for outbound sales teams.
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
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1mo
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Principal Software Engineer - Ad Experiences
Glendale or Santa Monica or Seattle or New York City or Los Angeles or San Francisco
$188k-$253k/yr HybridFull Time
The Walt Disney Company
The Walt Disney CompanyNYSE: DIS: Produces media content and operates global theme parks.
10+ YOE10+ years software engineering experience, BS/MS in CS/Engineering or equivalent, advanced Java proficiency, distributed systems design, SpringBoot, cloud (AWS), databases (DynamoDB, Redis), Kafka/Kinesis, observability, mentoring and on-call availability.
Java, SpringBoot, DynamoDB, Redis, MemCache, Apache Kafka, Kinesis, AWS, Terraform, Docker, Kubernetes
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2mo
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Principal Engineer Software - Storage (Chronosphere)
Burbank or Denver or Chicago or Austin or Jacksonville or Hartford or Bridgeport or Seattle or Boston or New York City
$147k-$238k/yr RemoteAll Commitments Available
Palo Alto Networks
Palo Alto NetworksNASDAQ: PANW: Provides enterprise-grade network, cloud, and endpoint security software.
Design and build scalable backend services for high-volume telemetry data; strong backend skills; cloud infra experience; API design; mentorship.
Go, Java, Python, Rust, AWS, GCP, Azure, REST, gRPC, GraphQL
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3w
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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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2mo
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Principal Platform Engineer
Los Angeles, California, United States
$170k-$190k/yr OnsiteFull Time
First Resonance
First Resonance: Software platform for tracking and managing complex hardware manufacturing.
8+ YOE8+ years software engineering; experience building high-availability backend services; strong distributed systems; leadership of large technical initiatives; excellent written and verbal communication.
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2w
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Principal Software Engineer, Machine Learning Infrastructure
Palo Alto or Seattle or Los Angeles or New York or Bellevue
$235k-$414k/yr OnsiteFull Time
Snap
SnapNYSE: SNAP: Develops social media applications and augmented reality technology.
10+ YOE10+ years software development experience, technical leadership, distributed systems and ML inference platform expertise, strong software design and debugging skills, ability to operate highly-available systems at scale.
Tensorflow, PyTorch, Kubernetes, GPU, LLM inference, RPC
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3mo
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Structural Principal Engineer
Irvine, California, United States
$113k-$175k/yr OnsiteFull Time
Cannon Corp
Cannon Corp: Engineering and surveying services for infrastructure and development.
12+ YOE3+ MgmtLead structural engineering projects; CA SE license required; 12+ years in structural analysis/design; 8+ years PM; 3+ years managing teams; proficiency in design software.
RISA, ETABS, SAFE, SAP2000, AutoCAD, Revit
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2mo
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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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1mo
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Principal AI Engineer
Los Angeles, California, United States
$248k-$300k/yr OnsiteFull Time
Crunchyroll
Crunchyroll: Operates a global streaming platform for anime and manga.
15+ YOE15+ years software engineering; experience with agentic systems; design, build and evaluate AI tooling; enable cross-functional teams; strong Python/TypeScript skills.
Python, TypeScript, Claude Code, Cursor, Devin, Datadog, LangSmith, Langfuse
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