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42 c full stack developer jobs at 26 companies in Ontario, 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
4d
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Full Stack Developer
Chino or United States
OnsiteFull Time
Harrington Process Solutions
Harrington Process Solutions: Distributes and fabricates industrial fluid process and flow control products.
6+ YOE6+ years full stack development with C#, .NET Core, ASP.NET Core, SQL Server and JavaScript; experience with React/Angular/Vue, Azure, Docker, CI/CD, Git, EMR not required; Bachelor's or equivalent.
C#, .NET Core, ASP.NET Core, REST APIs, HTML, CSS, JavaScript, React, Angular, Vue.js, SQL Server, Entity Framework Core, ColdFusion (CFML), Microsoft Azure, Docker, CI/CD, Git, LLM
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3w
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Full Stack Developer III
Berkeley or Los Angeles
$111k-$166k/yr HybridFull Time
PBK
PBK: Provides architectural and engineering design for specialized facilities.
7+ YOE7+ years full-stack development experience, proficiency with JavaScript/TypeScript, React, backend tech (Node.js/.NET/C#/Python), Azure, API integrations, CI/CD, and secure development practices; bachelor\u0002s degree preferred.
React, TypeScript, Node.js, .NET, C#, Python, Salesforce, Deltek Vantagepoint, Autodesk Forma, Microsoft Azure, GitHub Enterprise, Azure DevOps, Microsoft 365, Microsoft Graph API, Microsoft SharePoint, Docker, Azure Monitor, Application Insights, Log Analytics
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4d
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Senior Full Stack Developer
Charlotte or Boca Raton or Newark or Santa Monica
$130k-$150k/yr HybridFull Time
Perr&Knight
Perr&Knight: Provides actuarial consulting and software solutions for the insurance industry.
6+ YOE6+ years full-stack experience with C#/.NET Core, Angular/TypeScript, JavaScript/CSS, RESTful APIs, MS SQL Server, public-facing SaaS experience, and hands-on use of AI coding tools.
Angular, TypeScript, C#/.NET Core, JavaScript, CSS, MS SQL Server, Claude Code, Codex, RESTful APIs
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1mo
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Full Stack Developer
Norco, California, United States
$90k-$190k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
5+ YOEBachelor's degree or equivalent, 5+ years software development experience, proficiency in Java/C#/Python/JavaScript/HTML/CSS, React/Angular, Node.js/.NET, cloud platforms, Microsoft SQL Server, Git; CompTIA Security+ and ability to obtain DoD SECRET; U.S. citizenship; onsite in Norco, CA.
Java, C#, Python, JavaScript, HTML, CSS, React, Angular, Node.js, .NET, AWS, Azure, Google Cloud, Microsoft SQL Server, Git, Docker, Kubernetes, CI/CD
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2w
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Sr. Full Stack Software Engineer (Components)
Hawthorne, California, United States
$165k-$230k/yr OnsiteFull Time
SpaceX
SpaceX: Designs and launches advanced rockets and satellite internet constellations.
5+ YOEBachelor's in CS/engineering or 5+ years software development; full-stack experience; proficiency in Python/JavaScript/C#/Java; strong communication and problem-solving; AI and systems knowledge preferred.
Python, JavaScript, C#, .NET, Java, Angular, React, nginx, haproxy, redis, Make, pip, npm, nuget, Terraform, Ansible, Puppet, Docker, Kubernetes, PostgreSQL, SQL Server, CNC
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1mo
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LoopNet - Senior Full Stack Engineer
Irvine or Orange County or United States
$124k-$187k/yr HybridFull Time
CoStar Group
CoStar GroupNASDAQ: CSGP: Provides global real estate information, analytics, and online marketplaces.
7+ YOEBachelor's degree required; 7+ years production C#/.NET development; front-end experience with Vue/React/Angular in TypeScript; experience with AWS (S3, SQS, Dynamo, ElastiCache), Apache Kafka, Datadog, and relational databases; unit-testable development and mentoring experience.
C#, .NET, .NET Core, TypeScript, Vue, React, Angular, AWS S3, SQS, Dynamo, ElastiCache, Apache Kafka, Datadog, Claude Code, GitHub Copilot, MS SQL, MySQL, Git
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1mo
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Full Stack Developer
Norco, California, United States
$90k-$190k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
5+ YOE5+ years software development; Bachelor's in CS/Engineering or equivalent; proficiency in Java/C#/Python/JavaScript, front-end (React/Angular), back-end (Node.js/.NET), cloud (AWS/Azure/Google Cloud), Microsoft SQL Server, Git; CompTIA Security+; must obtain DoD SECRET and be U.S. citizen; onsite Norco, CA.
Java, C#, Python, JavaScript, HTML, CSS, React, Angular, Node.js, .NET, AWS, Azure, Google Cloud, Microsoft SQL Server, Git, Docker, Kubernetes, CI/CD
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3w
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Lead Applications Developer-Full Stack
Irvine, California, United States
$134k-$187k/yr OnsiteFull Time
West Coast University
West Coast University: Private university offering degree programs for healthcare professionals.
5+ YOE5+ years hands-on full stack web and microservices development with C#/.NET, JavaScript/TypeScript, SQL Server, and React or Angular; technical leadership experience; Bachelor's degree in CS/IT/IS or equivalent experience; experience with LLM-based coding agents.
ASP.NET, SQL Server, SQL, HTML, XML, CSS, JavaScript, TypeScript, C#, VB.NET, React, Angular, LLM, Claude, OpenCode
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1mo
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Full Stack Developer / AI Focused
Long Beach, California, United States
RemoteContract
CarParts.com
CarParts.comNASDAQ: PRTS: Online retailer of automotive aftermarket parts and accessories.
3+ YOE3–6 years software engineering; proficient in Python/TypeScript/Java/Go/C#; strong design, databases, APIs, testing, cloud and DevOps; AI-enabled deployment focus.
Python, TypeScript, Java, Go, C#, PostgreSQL, MySQL, MongoDB, Redis, DynamoDB, pgvector, REST, GraphQL, gRPC, OpenAPI/Swagger, AWS, GCP, Azure, Docker, Kubernetes, Terraform, Git, Copilot, Cursor, Claude Code, Datadog, OpenTelemetry, Prometheus, Grafana, dbt, Airflow, Spark, Kafka, Jira, Linear
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1mo
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Full Stack Engineer, Senior (Azure)
Oakland or California or Long Beach or El Dorado Hills or Huntington Park or Lodi or Rancho Cordova
$116k-$174k/yr HybridFull Time
Ascendiun
Ascendiun: Nonprofit parent overseeing health insurance and clinical service organizations.
4+ YOE4+ years enterprise app/cloud experience, 4-7 years software development with API focus, 3+ years Microsoft Azure (API Management, Functions/App Services, Azure AD) experience, REST/OpenAPI/MuleSoft, C#/.NET/Java/Python, CI/CD and IaC (Ansible), Docker; healthcare domain preferred.
Microsoft Windows, Linux Server, Remote Desktop Services, Microsoft Azure, Microsoft Azure API Management, Microsoft Azure Functions, Microsoft Azure App Services, Microsoft Azure AD, REST, HTTP, JSON, OpenAPI (Swagger), MuleSoft, C#/.NET, Java, Python, Service Bus, Event Grid, Bitbucket Pipelines, GitHub Actions, Ansible, Docker, AWS, GCP, Citrix
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2mo
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Full Stack Software Engineer
Los Angeles or Houston
$100k-$140k/yr HybridFull Time
GMV
GMV: Engineering and technology solutions for space, defense, and cybersecurity.
5+ YOE5+ years C#/.NET, SQL, testing, caching, React; strong communication; ability to lead when needed.
C#, DOTNET, SQL, React, Docker, Redis, RabbitMQ, Kafka, CI/CD, Cursor, Copilot
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1mo
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LoopNet - Senior Full Stack Engineer
Irvine, California, United States
$124k-$187k/yr HybridFull Time
CoStar Group
CoStar GroupNASDAQ: CSGP: Global provider of commercial and residential real estate data.
7+ YOEBachelor's degree required; 7+ years production C#/.NET experience; experience with TypeScript frameworks (Vue/React/Angular), AWS services (AWS S3, SQS, Dynamo, ElastiCache), Apache Kafka, Datadog; unit testing and database/SQL experience; strong communication.
C#, .NET, .NET Core, TypeScript, Vue, React, Angular, AWS S3, SQS, Dynamo, ElastiCache, Apache Kafka, Datadog, Claude Code, GitHub Copilot, MS SQL, MySQL, Git
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1w
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Full Stack Software Engineer
McLean or El Segundo
$87k-$198k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
5+ YOE5+ years software engineering experience with Python, React, or C++; experience with RESTful APIs, microservices, Docker, Kubernetes; ability to obtain TS/SCI with polygraph; bachelor\u0002s in STEM or 8+ years in lieu.
Python, React, C++, Docker, Kubernetes, CI/CD
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2mo
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Senior Full Stack Cloud Developer (.Net / Azure)
Irvine, California, United States
$155k-$172k/yr HybridFull Time
Home Franchise Concepts
Home Franchise Concepts: Provides franchising platforms for home and lifestyle services.
7+ YOESenior full stack developer with 7+ years, Azure cloud, .NET/C#, Angular, REST APIs, CI/CD, IaC (Terraform), AI tooling.
C#, .NET, Azure, Azure DevOps, Terraform, Angular, REST APIs, GitHub Copilot, Seq, SolarWinds, New Relic
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2w
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Senior Full-Stack Engineer, Maritime App
Costa Mesa or Seattle
$191k-$253k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
5+ YOE5+ years software engineering; production web apps with JavaScript/TypeScript and React; familiarity with backend languages (Go, C++, Rust); experience designing architecture, CI/CD, monorepos, and integrating frontend tooling; Bachelor's or equivalent; must be a U.S. Person.
JavaScript, TypeScript, React, Go, C++, Rust, CircleCI, gRPC, protobuf, NixOS
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2mo
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Full-Stack Software Engineer (Application Software)
El Segundo, California, United States
$108k-$154k/yr OnsiteFull Time
Rangeview
Rangeview: Operates an automated foundry producing precision metal aerospace parts.
2+ YOE2+ years building production web apps; frontend with TypeScript and React; backend with C#, ASP.NET, Entity Framework; relational DB design; ability to work onsite in El Segundo and meet U.S. Person requirements.
TypeScript, React, C#, ASP.NET, Entity Framework, Next.js, MUI, Hot Chocolate, GraphQL
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1mo
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Software Engineer Full Stack (Pricing Engine)
Irvine, California, United States
$90k-$134k/yr HybridFull Time
Xe
XeNASDAQ: EEFT: Provides international money transfers and online currency exchange services.
3+ YOE3+ years building production web applications; strong frontend with Vue.js or React; backend proficiency in C#/.NET (or Java/Kotlin/Go); SQL and AWS (SQS, DynamoDB, S3, ECS, Lambda); writing tests and using agentic coding tools.
Vue.js, React, C#, .NET, Java, Kotlin, Go, SQL, Copilot, Cursor, Claude Code, AWS, SQS, DynamoDB, S3, ECS, Lambda, Memcached, Redis, Jira, Confluence, Postman, Bruno
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1w
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Full Stack Engineering 4 - Ads Measurement
New York City or Los Angeles or Los Gatos
$250k-$413k/yr OnsiteFull Time
Netflix
NetflixNASDAQ: NFLX: Provider of global streaming entertainment and video content.
Strong OOP knowledge (C++, Java), frontend skills (HTML, CSS, Typescript, React/Angular), REST/GraphQL, SQL, UX/UI understanding, and ads domain experience.
C++, Java, HTML, CSS, Typescript, React, Angular, REST, GraphQL, SQL
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1mo
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Staff Software Engineer, Full-Stack
Santa Ana or California or New Jersey or Texas or Florida or Shanghai or Japan or Hong Kong or Canada or Mexico or Germany or France or United States
$166k-$269k/yr HybridFull Time
Collectors
Collectors: Providing authentication and grading services for high-value collectibles.
7+ YOE7+ years building web apps, APIs, and distributed systems; 3+ years AWS; proficiency in Python, C#, or Java; experience with React/Next.js; use of AI tools (Claude Cowork, Codex); staff-level technical leadership.
AWS, Claude Cowork, Codex, Python, C#, Java, React, Next.js, e-Verify
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2w
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Sr Software Engineer II - Fullstack - Apex Events- AXS
Los Angeles, California, United States
$145k-$165k/yr HybridFull Time
AEG Worldwide
AEG Worldwide: Operates live entertainment venues and professional sports franchises worldwide.
6+ YOE6+ years software development, strong full‑stack web experience with TypeScript/React or NextJS, C#/.NET Core, relational databases, RESTful APIs, and mentoring experience.
HTML, CSS, JavaScript, TypeScript, ReactJS, NextJS, C#, .NET Core, Microsoft SQL Server, Oracle, MySQL, PostgreSQL, AWS, NodeJS, Docker, Kubernetes, Git, CI/CD, Kafka, Elasticsearch, DynamoDB, TDD, BDD
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