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170 principal software engineer jobs at 91 companies in Fairfield, CA

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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Software Engineer/Principal Software Engineer
McClellan Park, California, United States
$92k-$171k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Designs and manufactures advanced aerospace and defense systems.
2+ YOEUS citizen able to obtain Top Secret clearance. Bachelor's in STEM with 2+ years (or Master's with 0) for Software Engineer; or Bachelor's with 5+ years (or Master's with 3+) for Principal. Experience with Agile, Git/GitLab/Bitbucket, C/C++, Python, Java, Docker; software test planning and execution experience preferred.
Agile, Git, GitLab, Bitbucket, C/C++, Python, Java, Docker, Kubernetes, Atlassian, JIRA, Jenkins, Confluence, Linux Bash
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1mo
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Software Engineer/Principal Software Engineer
McClellan, California, United States
$92k-$171k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
2+ YOEU.S. citizen with ability to obtain Top Secret clearance; Bachelor's in STEM + 2 yrs experience (or Master's with 0 yrs) for Software Engineer, or Bachelor's + 5 yrs (Master's + 3 yrs) for Principal. Experience with Agile, Git/GitLab/Bitbucket, C/C++, Python, Java, Docker; software test planning and execution.
Agile, Git, GitLab, Bitbucket, C/C++, Python, Java, Docker, Kubernetes (K8s, k3s), Atlassian, JIRA, Jenkins, Confluence, Linux Bash, Linux/UNIX, CI/CD, Scrum
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3mo
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Principal Software Engineer, AI Onboarding
San Francisco, California, United States
$240k-$250k/yr HybridFull Time
Saviynt
Saviynt: Provides AI-powered identity governance and cloud security platforms.
10+ YOE10+ years software engineering; expert in Java, Spring, REST, microservices; strong AI tooling knowledge; cloud, security, and containerization savvy.
Java, Spring Framework, REST, Microservices, AWS, Azure, Google Cloud, Docker, Kubernetes, SQL, ElasticSearch, Redis, CI/CD, Kafka, Git, GitHub, GitLab, Maven, Ant, IntelliJ, Eclipse, Q, Github Copilot, Cursor
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2mo
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Principal Software Engineer, Data
Cambridge or San Francisco
$204k-$348k/yr HybridFull Time
Lila Sciences
Lila Sciences: Develops an AI platform for autonomous scientific research and discovery.
8+ YOE8-15 years of backend-focused engineering; full stack experience; AWS, Kubernetes; API design; data pipelines; Python; collaboration with scientists and engineers.
React, TypeScript, Nx, Tailwind, FastAPI, SQL/NoSQL, Python, Pydantic, SQLAlchemy, SQLModel, Django, Airflow, Prefect, Temporal, Dagster, pandas, numpy, scipy, jax, pytorch, AWS, Kubernetes, Terraform, CloudFormation, GitHub Actions
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Principal Software Engineer
San Francisco, California, United States
RemoteFull Time
DocuSign
DocuSignNASDAQ: DOCU: Provides electronic signature and agreement management software solutions.
15+ YOE15+ years in distributed systems/infra; Go or Python; Kubernetes and Terraform; incident commander; cloud migrations; OpenTelemetry; Azure/AKS; on-call leadership.
Go, Python, Kubernetes, Terraform, AKS, Azure DevOps, GitHub Actions, OpenTelemetry
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1mo
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Principal Software Engineer
South San Francisco, California, United States
$220k-$275k/yr HybridFull Time
Natera
NateraNASDAQ: NTRA: Provides clinical genetic testing and diagnostics services.
10+ YOE10+ years software engineering experience; production cloud infrastructure (AWS preferred), Kubernetes, Terraform, Python/Go/Java; experience designing platforms, mentoring engineers, and shipping production software.
Claude Code, Cursor, AWS, GCP, Azure, Kubernetes, Terraform, Python, Go, Java, Groovy, Helm, Nextflow, WDL, Django, React, Airflow, Argo, Temporal, Dagster, LIMS, MCP servers
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Principal Software Engineer, Platform Security
San Francisco, California, United States
$197k-$314k/yr HybridFull Time
Salesforce
SalesforceNYSE: CRM: Sells cloud-based customer relationship management and business software solutions.
10+ YOE10+ years in software development; strong in databases, APIs, data pipelines; experience with large projects and security infrastructure.
API development, REST APIs, SDLC, AWS, GCP, Azure, Python, Ruby, Unix/Linux, Security infrastructure
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2w
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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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Principal Software Engineer
San Francisco, California, United States
OnsiteFull Time
Midjourney
Midjourney: Independent research lab developing generative AI and medical imaging technology.
Deep software architecture and technical leadership for complex distributed systems; strong Python and concurrency experience (asyncio, multiprocessing); observability, testing, and performance engineering skills.
Python, asyncio, multiprocessing, profiling, gRPC, protobuf, CI
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1mo
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Principal Software Engineer
San Francisco, California, United States
$204k-$337k/yr OnsiteFull Time
Mastercard
MastercardNYSE: MA: Global payment processing and financial technology service provider.
Bachelor’s or Master’s in CS/Engineering, extensive software engineering and platform architecture experience, strong Java/JVM and Spring skills, REST/microservices, cloud-native (AWS/Kubernetes), distributed systems (Hadoop/Spark/Kafka), CI/CD and leadership skills.
Java, JVM, Spring Boot, Spring MVC, Spring Security, Spring Cloud, RESTful web services, PostgreSQL, NoSQL, React, JavaScript, TypeScript, HTML, CSS, Hadoop, Spark, Kafka, AWS, PCF, Kubernetes, Docker, CI/CD, Jenkins, Git, Maven, Gradle, SonarQube
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2mo
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Sr. Principal Software Engineer (NetSec-PanOS Dev)
San Francisco or Santa Clara or San Jose
$170k-$277k/yr OnsiteFull Time
Palo Alto Networks
Palo Alto NetworksNASDAQ: PANW: Provides enterprise-grade network, cloud, and endpoint security software.
15+ YOE15+ years software engineering; Go/Java; cloud/distributed systems; REST APIs; databases; AWS/GCP; containerization (Docker/Kubernetes).
Go, Java, Python, C, Kafka, PubSub, Redis, SQL, BigQuery, MongoDB, Docker, Kubernetes, GCP, AWS, REST APIs, Serverless
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1mo
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Principal Software Engineer
United States or Canada or Columbus or Austin or San Francisco or New York City
$191k-$264k/yr RemoteFull Time
Upstart
UpstartNasdaq: UPST: AI-powered lending marketplace for consumer and automotive loans.
8+ YOEBachelor's or equivalent and 8+ years software engineering experience; designing and operating large-scale distributed systems, relational schemas, APIs, auth/RBAC; partnering with risk/compliance/operations teams.
TypeScript, Node.js, Next.js, Prisma, SOC 2, NIST CSF
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1mo
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Principal Software Engineer, Crusoe Cloud
San Francisco, California, United States
$256k-$320k/yr OnsiteFull Time
Crusoe
Crusoe: Provides energy-efficient cloud infrastructure powered by stranded and renewable energy.
Principal-level engineer to design scalable cloud platform architecture, evaluate services/tools, write technical designs, contribute code, and mentor engineers to improve customer experience.
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21h
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Principal Software Engineer - Python
Kansas City or San Francisco
$150k-$300k/yr RemoteFull Time
Veeva Systems
Veeva SystemsNYSE: VEEV: Cloud-based software solutions for the global life sciences industry.
12+ YOE12+ years software development experience, production Python required, enterprise SaaS and scalability expertise, experience mentoring engineers, strong communication, unrestricted US work authorization.
Python, Git, FastAPI, Pydantic
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2w
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Principal Software Engineer (C++)
Alameda, California, United States
$180k-$230k/yr OnsiteFull Time
Boxbot
Boxbot: Automated vertical package handling and sorting for logistics facilities.
8+ YOE8+ years professional software engineering with deep C++ expertise, experience building real-time or near-real-time systems, multi-threaded programming, hardware interfaces, Linux, strong debugging and architecture skills.
C++, Linux, PLCs
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1mo
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Principal Software Engineer - AWS
Chicago or Scottsdale or San Francisco or New York City or Phoenix
$173k-$276k/yr HybridFull Time
Early Warning Services
Early Warning Services: Operates payment and risk solutions for the financial industry.
15+ YOE15+ years software engineering experience with 8+ years in FinTech; hands-on full‑stack design and architecture, cloud/containerization, CI/CD, test automation, Java/J2EE/Spring, messaging, Oracle PL/SQL, Git, and strong communication.
Java, J2EE, JUnit, Tomcat, Spring Boot, Spring Core, Kafka, Tibco EMS, JMS, Oracle PL/SQL, JavaScript, jQuery, AngularJS, Git, Chef, Maven, Jenkins, AWS, Google Cloud, Microsoft Azure, SVN, Jira, Bugzilla, Confluence, Splunk, Altiris, Zabbix, Terraform, AppDynamics, C#, Ruby, Python, PHP, Kubernetes
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Principal Software Engineer
San Francisco or Morrisville or Zurich or Bengaluru or Beijing
$206k-$277k/yr HybridFull Time
The Walt Disney Company
The Walt Disney CompanyNYSE: DIS: Produces movies, operates theme parks, and provides streaming services.
10+ YOE10+ years experience in video codecs/media processing, degree in EE/Computer Engineering/CS, deep expertise in AV1/AV2/AVC/HEVC/VVC, strong algorithms and ML/AI for video, proven IP generation, multimedia stack experience.
AV1, AV2, AVC, HEVC, VVC, C/C++, Python, GStreamer, Docker, XML, JSON, Git, GitHub, REST
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Principal Software Engineer - Roblox Database
San Mateo, California, United States
$294k-$343k/yr HybridFull Time
Roblox
RobloxNYSE: RBLX: Platform for creating and playing user-generated 3D digital experiences.
8+ YOE8+ years software engineering experience; deep expertise in large-scale distributed databases and storage engines, database internals, consensus algorithms, and low-latency services; experience with C/C++, Go, or Rust and Kubernetes/Nomad.
PostgreSQL, MySQL, RocksDB, Spanner, Aurora, AlloyDB, C, C++, Go, Rust, Kubernetes, Nomad
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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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