166 senior full stack developer jobs at 108 companies in Ontario, CA

PromotedHiringCafe
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
3mo
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Full Stack Engineer
Los Angeles, California, United States
$150k-$180k/yr OnsiteContract, Full Time
Secret Level
Secret Level: AI-native entertainment studio producing film, TV, and advertising content.
Senior level Full Stack developer with Python and React, AWS, CI/CD tooling, Postgres/GraphQL; contract-to-hire.
Python, JavaScript, React, Node.js, Next.js, Tailwind, Postgres, GraphQL, AWS, Docker, Terraform, GitHub Actions
2w
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Senior Full Stack Engineer
Orlando or Los Angeles County
RemoteFull Time
Versant
VersantNasdaq: VSNT: Operates cable television networks and digital media entertainment platforms.
Senior full‑stack engineering experience with Node.js and frontend (Angular/TypeScript). Experience with AWS serverless (Lambda), PostgreSQL, ETL/data workflows, CI/CD, and production support.
Node.js, Lambda, PostgreSQL, Angular, NgRx, RxJS, TypeScript, AWS, Terraform, Serverless Framework, Jenkins, Docker, GitHub Actions, Python 3.x, API Gateway, S3, RDS/Aurora PostgreSQL, Sequelize, Elasticsearch, OpenSearch, Git, AWS Secrets Manager, SSM, Cypress, EMR, Glue, Redshift, Spark, Puppet, Apache httpd
3w
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Senior Full-Stack Developer
Costa Mesa, California, United States
OnsiteFull Time
TOCA Soccer
TOCA Soccer: Operates technology-enabled soccer training and entertainment centers.
5+ YOE5+ years building full-stack web or native apps; strong React, TypeScript, JavaScript, and Node.js skills; experience with AI-assisted development tools; cross-functional collaboration; experience with CRM/booking/subscription products.
TypeScript, JavaScript, React, Node.js, Expo, React Native, PostgreSQL, MySQL, MongoDB, AWS, GCP, Cursor, Claude Code, GitHub Copilot
1mo
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Senior Full Stack Developer
Newport Beach, California, United States
$125k-$153k/yr RemoteFull Time
Pacific Life
Pacific Life: Provides life insurance, annuities, and investment products for financial security.
5+ YOEBachelor's degree required; 5+ years software development (2+ as full stack); expertise with Angular/React/TypeScript, Java, Node.js, AWS, serverless, microservices, REST/GraphQL, SQL/NoSQL, CI/CD and DevSecOps; Azure DevOps experience.
Angular, React, TypeScript, Java, Node.js, AWS, Serverless, GraphQL, SQL, NoSQL, Microsoft Azure DevOps, MuleSoft
1w
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Senior Engineer, Full-Stack
Temecula, California, United States
OnsiteFull Time
FFF Enterprises
FFF Enterprises: Distributes specialty biopharmaceuticals and provides healthcare supply chain services.
7+ YOE7+ years full‑stack SaaS development experience, bachelor’s in CS or equivalent, proficiency with backend (.NET), frontend (React/Angular), SQL, Azure services, CI/CD/DevOps, and experience in regulated healthcare or similar.
.NET, React, Angular, GraphQL, Azure, Microsoft App Services, Microsoft Functions, AKS, CI/CD, DevOps, SQL, FHIR, HL7
1w
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Senior Engineer, Full-Stack
Temecula, California, United States
OnsiteFull Time
FFF Enterprises
FFF Enterprises: Specialty pharmaceutical and vaccine distributor for healthcare providers.
7+ YOE7+ years full‑stack SaaS development experience, bachelor’s degree (or equivalent), cloud (Azure) and CI/CD/DevOps experience, backend (.NET) and frontend (React/Angular) proficiency, strong SQL and API/integration skills.
.NET, React, Angular, SQL, GraphQL, FHIR, HL7, Azure, App Services, Functions, AKS, CI/CD
2mo
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Full Stack Engineer, Senior
Oakland or Seattle or WA or OH or CA or Long Beach or AZ or CO or CT or FL or GA or MD or MN or NV or OR or El Dorado Hills or Lodi or Rancho Cordova or Redding or San Diego or Woodland Hills or AL or IL or VA or WI or TX or NY
$103k-$174k/yr HybridFull Time
Ascendiun
Ascendiun: Nonprofit parent overseeing health insurance and clinical service organizations.
5+ YOE5+ years full stack development; BA/BS or equivalent IT experience; React/Vue/Angular; .NET/Java/Node.js/Python APIs; SQL/NoSQL; Azure preferred; Docker; IaC; CI/CD; AI tools; healthcare experience preferred.
React, Vue, Angular, JavaScript, TypeScript, .NET, Java, Node.js, Python, MS SQL Server, Oracle, NoSQL, REST, Azure, AWS, GCP, Docker, Kubernetes, Ansible, Bicep, ARM, Terraform, GitHub, GitLab, Bitbucket, Git
3d
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Senior Full Stack Developer
Los Angeles, California, United States
$125k-$145k/yr HybridFull Time
Motion Picture Industry Pension & Health Plans
Motion Picture Industry Pension & Health Plans: Administers health and retirement benefits for the entertainment industry.
10+ YOEBachelor's degree or equivalent,10+ years full‑stack experience,Next.js and .NET Core microservices, Kubernetes, SQL, CI/CD, production support, strong communication and problem solving.
Next.js, .NET Core, Kubernetes, SQL, Contentful, Power BI, Microsoft Fabric, Microsoft Office, Docker, React.js, Azure
2mo
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Sr. Full-Stack Engineer
Los Angeles, California, United States
RemoteFull Time
Cruva
Cruva: Operating system for commerce tooling.
Senior full-stack engineer with strong AWS, data systems, and web scraping experience
Next.js, AWS, ECS, ECR, Lambda, Postgres, ClickHouse, MongoDB
2w
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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
1mo
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Full Stack Engineer, Growth
Los Angeles or New York
$131k-$175k/yr OnsiteFull Time
Fanatics
Fanatics: A global digital sports platform for merchandise and collectibles.
5+ YOE5+ years of professional full stack development; JavaScript/TypeScript, React, Node.js; analytics/tracking, A/B testing, APIs; scalable systems; cross-functional collaboration.
JavaScript, TypeScript, React, Node.js
1mo
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Full-Stack Developer (Contract)
Brea, California, United States
$156k-$181k/yr OnsiteContract
Samyang America
Samyang America: Distributes and markets instant noodles and packaged food products.
5+ YOEBilingual English/Korean; 5+ years professional software development; strong full-stack web app experience; cloud platform experience (AWS, Azure, DigitalOcean); GitHub; secure authentication and workflow automation expertise; excellent documentation and communication.
AWS, Azure, DigitalOcean, GitHub
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
2mo
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Founding Engineer (Full-Stack)
Los Angeles or Santa Monica
HybridFull Time
UP.Labs
UP.Labs: Builds and scales mobility-focused startups with corporate partners.
6+ YOE6+ years software engineering; proven full-stack delivery; AI-driven development; comfortable in ambiguity
1d
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Senior Engineer, Full-Stack
Temecula, California, United States
$145k-$160k/yr OnsiteFull Time
FFF Enterprises
FFF Enterprises: Distributes specialty biopharmaceuticals and manages critical healthcare inventory.
7+ YOEBachelor's degree, 7+ years full-stack SaaS experience, proficiency with Azure and cloud-native architectures, backend (.NET), frontend (React/Angular), SQL/data modeling, security and healthcare compliance (PHI,21 CFR Part 11).
Azure, App Services, Functions, AKS, .NET, React, Angular, GraphQL, SQL, FHIR, HL7, CI/CD
3w
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Senior Full Stack Software Engineer
Torrance, California, United States
$122k-$225k/yr OnsiteFull Time
Divergent
Divergent: Develops digital manufacturing systems for complex vehicle structures.
8+ YOEBachelor's or equivalent, 8+ years software engineering with full-stack experience; expert TypeScript, Node.js, React; strong relational and NoSQL data modeling; system design, mentoring, and ability to access export-controlled US information.
Divergent Adaptive Production System (DAPS), TypeScript, Node.js, React, NoSQL, Kubernetes, Docker, CI/CD, ERP, PLM, MES
2mo
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Full Stack Engineer (Mid-Senior)
Los Angeles, California, United States
OnsiteFull Time
Revel
Revel: Modern software platform for controlling complex hardware systems.
4+ YOE4+ years software engineering experience; strong modern frontend expertise (preferably React); full-stack architecture and backend web services experience; familiarity with Linux; strong problem-solving and communication skills.
React, Linux, Rust
2w
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Full Stack Developer (Golang)
Culver City, California, United States
HybridFull Time
Fincons Group
Fincons Group: Provides global IT consulting and system integration services.
5+ YOE5+ years full stack experience, strong Golang skills, Ad Tech experience required; backend services, APIs, microservices, distributed systems, React/TypeScript frontend, SQL/NoSQL, cloud (AWS/GCP/Azure), Docker/Kubernetes, Git, CI/CD, Agile.
Golang, React, TypeScript, JavaScript, HTML, CSS, SQL, NoSQL, AWS, GCP, Azure, Docker, Kubernetes, Git, CI/CD, Kafka
1mo
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Full Stack Engineer, Foundation
United States or Oakland or San Francisco or New York City or Boston or Seattle or Irvine or Los Angeles or Monterey or Santa Barbara or Santa Rosa or Austin or Portland or Philadelphia or Chicago
$146k-$235k/yr RemoteFull Time
LaunchDarkly
LaunchDarkly: Provides a feature management platform for software development teams.
5+ YOE5+ years full-stack engineering; strong TypeScript and React; experience with Go or Node; shipped AI/agent features and MCP/LLM tooling; instrumentation, funnel analysis, A/B testing, and on-call support experience.
TypeScript, React, Go, Node, MCP servers, LLM, IDE, LaunchDarkly
3w
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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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