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25 senior full stack net developer jobs at 18 companies in Lake Forest, CA

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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4w
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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
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4w
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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
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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
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1mo
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Senior Full Stack Developer
Carlsbad, California, United States
$125k-$150k/yr OnsiteFull Time
Rockstar Games
Rockstar Games: Creates and publishes world-class open-world video games.
7+ YOE7+ years web development experience; strong expertise in C#, .NET, and SQL; experience with React, REST APIs, GitHub, Agile; mentoring and strong communication skills.
C#, .NET, SQL, React, REST APIs, GitHub, Python, Next.js, Kafka, TeamCity, Jenkins, Postman, Bruno, MongoDB, Elastic Stack
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1w
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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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2w
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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
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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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5d
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Senior Full-Stack Engineer, Designer Experience
Glendale, California, United States
$160k-$200k/yr OnsiteFull Time
Moon
Moon: Building an AI-powered SaaS platform for business operations.
5+ YOE5+ years full-stack experience with C#/.NET and a modern front-end framework; cross-platform mobile a plus; product-minded with strong user communication; AI-native workflows.
C#, .NET, TypeScript
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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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1mo
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Senior Full Stack Developer (Workforce Benefits Billing)
Newport Beach, California, United States
$125k-$153k/yr OnsiteFull Time
Pacific Life
Pacific Life: Provides life insurance, annuities, and investment products for financial security.
5+ YOEBachelor's in Computer Science (or related) and 5+ years application development; experience with Java or .NET, cloud (AWS), CI/CD, API integration/MuleSoft, and modern containerization preferred.
Java, .NET, AWS, Azure DevOps, GitHub Actions, MuleSoft, Docker, Kubernetes, CI/CD
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5d
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KAISJP00252884 Full Stack Developer - Sr
Downey, California, United States
HybridContract
Kaiser Permanente
Kaiser Permanente: Integrated healthcare and insurance services provider
5+ YOEBachelor's in CS or related,5+ years full stack experience,proficiency with ASP.NET MVC,.NET Core,C#,JavaScript,EMR not mentioned,SQL Server experience,strong communication and problem-solving.
ASP.NET MVC, .NET Core, C#, JavaScript, jQuery, Bootstrap, ASP.NET Web API, ORM, Microsoft SQL Server, IIS, Git, SVN, Visual Studio, SQL Client Tools, Postman, SoapUI
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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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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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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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3w
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Senior Software Engineer-Tech Ex AI Assets Foundry Team
Chicago or Dallas or Los Angeles or Minneapolis or New York City or San Francisco or Seattle or Washington
$120k-$162k/yr OnsiteFull Time
West Monroe
West Monroe: Business and technology consultancy specializing in digital transformation.
5+ YOE5+ years full-stack development experience, cloud and CI/CD skills, experience integrating Generative AI, strong software design and communication, bachelor’s degree preferred, mentoring experience.
Node.js, Python, .NET, React, TypeScript, JavaScript, HTML5, CSS3, PostgreSQL, MongoDB, SQL Server, Microsoft Azure, Microsoft Azure OpenAI, Databricks Machine Learning, Amazon Web Services (AWS), Git, Microsoft Azure DevOps, Terraform, Docker, npm, NuGet, Jest
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3w
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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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1mo
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Sr. Software Developer
Orange or Arizona or California or Florida or Maryland or Maine or Michigan or Missouri or North Carolina or Nevada or New York or Ohio or Oklahoma or Oregon or South Carolina or Texas or Utah or Washington or Wyoming
$120k-$145k/yr RemoteFull Time
Aeries Software
Aeries Software: Provides student information management software for K-12 school districts.
7+ YOE7+ years professional software development with Microsoft .NET stack, experience with React/TypeScript, RESTful API design, Playwright, cloud deployments (AWS preferred), practical use of Claude or similar LLM agent tools, and demonstrated technical leadership.
ASP.NET WebForms, React, TypeScript, C#, .NET Web API, RESTful API, Claude, Redux Toolkit, Zustand, Playwright, CI/CD, Azure DevOps, AWS, ECS, Lambda, Step Functions, Bedrock, Azure, GCP
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1mo
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Senior IT Software Engineer
San Francisco or Los Angeles
$104k-$139k/yr HybridFull Time
State Bar of California
State Bar of California: Regulates the legal profession and licenses attorneys in California.
3+ YOE3+ years IT experience; bachelor’s degree or equivalent; strong Microsoft-stack development (C#, .NET, ASP.NET MVC), SQL Server, modern JavaScript (Angular/React), Azure integrations, GitHub Actions/CI-CD, and experience modernizing legacy systems.
C#, .NET (Core and Framework), ASP.NET MVC, Web APIs, SQL Server, Angular, React, Azure Functions, Logic Apps, Event Grid, REST APIs, GitHub Actions, Tyler Odyssey
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2mo
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Software Development Manager
San Diego or Las Vegas or Centennial or Irvine or Overland Park or Salt Lake City or New Jersey
$120k-$140k/yr OnsiteFull Time
Axos Financial
Axos FinancialNYSE: AX: Provides digital-first banking and diverse financial services to customers.
5+ YOE3+ Mgmt5+ years full-stack web development; GoLang; REST/SOAP; 3+ years leading technical resources; experience with distributed teams; GoLang, Java, .NET; Agile; strong communication.
GoLang, Java, NET, .NET, REST, SOAP
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