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299 sr net developer jobs at 166 companies in California

2mo
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Senior .NET Engineer
Carlsbad or United States
HybridFull Time
NTENT
NTENT: Develops semantic search and natural language processing technology platforms.
3+ YOE3+ years experience; .NET Core and C#; multi-threaded programming; REST APIs; scalable architectures; distributed data stores (Aerospike, Elasticsearch, Kafka); testing.
.NET Core, C#, REST API, Aerospike, Elasticsearch, Kafka, Docker, Kubernetes, Git, React, JavaScript, TypeScript, HTML, CSS
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Senior .NET Engineer
Toronto or Canada or San Francisco or New York City or Chicago or Manila
$110k-$150k/yr RemoteFull Time
Derivative Path
Derivative Path: Provides cloud-based software for managing financial derivatives and hedging.
7+ YOE7+ years building production software; strong C# and ASP.NET; React and database experience (Postgres, MS SQL, MongoDB); CI/CD and automated testing; DDD/SOA/microservices experience; mentoring experience; CS degree or equivalent.
C#, ASP.NET, Postgres, MS SQL, MongoDB, React, CI/CD, Docker, Kubernetes, AWS CDK, Terraform, Blazor
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1mo
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iClassPro Inc - Senior Developer .NET
United States or California or New York
RemoteFull Time
iClassPro
iClassPro: Provides management software for youth activity centers and schools.
5+ YOE5+ years C# experience with ASP.NET Core, full-stack skills (React/Next.js), proficiency in Entity Framework Core, LINQ and SQL; strong architecture mindset and ability to mentor developers; U.S. work authorization required.
C#, ASP.NET Core, React, Next.js, Entity Framework Core, LINQ, SQL, Culture Index, E-Verify
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5d
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Senior .NET/AWS Software Engineer
Mountain View, California, United States
$120k-$142k/yr HybridFull Time
Cognizant
CognizantNasdaq: CTSH: Provides global information technology and business process outsourcing services.
5+ YOE5+ years software development with .NET Core, Python, AWS, and SQL Server; experience designing scalable backend services, APIs, CI/CD, and supporting production applications.
.NET Core, Python, AWS, SQL Server, CI/CD, GitHub Copilot
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5d
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Senior .NET/AWS Software Engineer
Mountain View, California, United States
$120k-$142k/yr HybridFull Time
Cognizant
CognizantNASDAQ: CTSH: Provides IT consulting and technology services to global enterprises.
5+ YOE5+ years software development with .NET Core, AWS, Python, and Microsoft SQL Server; experience with cloud and on-premises apps, backend services/APIs, troubleshooting, CI/CD and Agile collaboration.
Microsoft .NET Core, Python, AWS, Microsoft SQL Server, GitHub Copilot
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3w
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Full-Stack .NET/Mobile Developer
San Diego, California, United States
$90k-$130k/yr OnsiteFull Time
Applications International Corporation
Applications International Corporation: Delivers cloud-based environmental health, safety, and ESG compliance software.
5+ YOE5+ years full-stack .NET experience, 3+ years mobile (.NET MAUI/Xamarin), ASP.NET/C# backend, REST API and SSO experience, Azure and CI/CD familiarity, bachelor’s degree or equivalent preferred.
.NET MAUI, Xamarin, ASP.Net, MVC, C#, VB.Net, SSIS, Azure, Visual Studio, Git, Azure DevOps, GitHub Actions, SQL Server, OAuth 2.0, OpenID Connect, SAML
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1mo
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Payments .NET Application Developer
Charlotte or Scottsdale or Dallas or Cleveland or California or Colorado or District of Columbia or Illinois or Maryland or Massachusetts or Minnesota or New York or New Jersey or Washington
$44-$54/hr HybridFull Time
Accenture
AccentureNYSE: ACN: Global provider of management consulting and technology services.
5+ YOE5+ years .NET development experience; proficient in C# and .NET core; relational DB experience (Oracle/MSSQL/PostgreSQL); Visual Studio and Git; strong OOP, design patterns, and communication skills; associate or bachelor degree.
.NET core, C#, Oracle, MSSQL, PostgreSQL, Microsoft Visual Studio, git, ASP.NET Core MVC, Web API, SQL Server, Entity Framework Core, ReactJS, VueJS, HTML, CSS, JavaScript, NUnit, xUnit, CockroachDB, Kafka
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3mo
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Senior Software Engineer (C#, C++, .NET)
Milpitas, California, United States
$136k-$232k/yr OnsiteFull Time
KLA
KLANASDAQ: KLAC: Provides process control and yield management for semiconductor manufacturing.
5+ YOE7+ years software development in C++, C#, .NET; Windows 64-bit; multi-threading; architecture; GUI; semiconductor domain experience preferred.
C++, C#, .NET, Windows Internals, STL, WinDBG, Microsoft Visual Studio, GUI, Multi-threading
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2mo
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Lead Product Engineer – .NET and AI Driven
New York City or Birmingham or Miami or Tampa or Blue Ash or Cincinnati or Los Angeles
$140k-$199k/yr HybridFull Time
Green Dot
Green DotNYSE: GDOT: Provides mobile banking and payment solutions to consumers and businesses.
8+ YOE8+ years in software engineering; .NET/C# expertise; SQL Server; Azure migration; AI-assisted development; automated testing; CI/CD.
.NET, C#, SQL Server, Azure, AKS, Cosmos DB, App Services, Functions, GitHub Copilot, Claude
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Sr. Software Engineer - B2B
Los Angeles, California, United States
$130k-$150k/yr HybridFull Time
AXS
AXS: Provides digital ticketing and marketing solutions for live events.
4+ YOE4+ years software development experience; strong C#/.NET or Java skills; distributed systems, concurrency, cloud (AWS) experience; relational databases; mentoring and system design experience.
C#, .NET, .NET Core, Java, AWS, SQL Server, PostgreSQL, MySQL, Kafka, DynamoDB, Elasticsearch, Docker, Terraform
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LoopNet - Senior Software Engineer (C#/.NET)
Irvine or Orange County
$124k-$187k/yr HybridFull Time
CoStar Group
CoStar GroupNASDAQ: CSGP: Provides global real estate information, analytics, and online marketplaces.
7+ YOEBachelor's degree, 7+ years production .NET/C# experience, AWS and Apache Kafka experience, frontend knowledge (Vue/React/Angular, TypeScript), SQL/NoSQL, Git, unit/performance/integration testing experience.
C#, .NET, .NET Core, AWS, Apache Kafka, Vue, React, Angular, TypeScript, Microsoft SQL, MySQL, NoSQL, Git, GitHub Copilot, Claude Code
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1mo
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LoopNet - Senior Software Engineer (C#/.NET)
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 .NET/C# experience; AWS and Kafka experience; frontend knowledge (Vue/React/Angular, TypeScript); SQL/NoSQL and Git workflows; unit, integration, and performance testing experience.
C#, .NET, .NET Core, AWS, Apache Kafka, Vue, React, Angular, TypeScript, Git, SQL, MS SQL, MySQL, NoSQL, Claude Code, GitHub Copilot
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Sr. Software Engineer
Irvine, California, United States
$112k-$191k/yr RemoteFull Time
Ingram Micro
Ingram MicroNYSE: INGM: Distributes information technology products and provides supply chain solutions.
5+ YOE5+ years enterprise software engineering with C#, .NET, SQL Server, Angular, and Azure; experience stabilizing production systems, building microservices/APIs, and mentoring teams.
C#, .NET, SQL Server, Angular, Azure, App Services, Functions, SQL Database, Kubernetes, Docker, DevOps pipelines
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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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1w
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Principal Software Engineer (Medical Device Software/C#, .NET, Windows)
Lake Forest, California, United States
$128k-$166k/yr OnsiteFull Time
Alcon
AlconNYSE: ALC: Manufactures ophthalmic surgical equipment and vision care products.
5+ YOE5+ years developing Windows-based software using C#, .NET and related Microsoft technologies for regulated medical device environments; strong architecture, OOD, multi-threading, networking, and communication skills.
C#, .NET, WPF/XAML, MVVM, C++, Git, HL7, FHIR, DICOM, Protocol Buffers, TCP/IP
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3w
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Sr Platform Engineer II- Appian
Newport Beach, California, United States
$125k-$153k/yr HybridFull Time
Pacific Life
Pacific Life: Provides life insurance, annuities, and investment products for financial security.
5+ YOEBachelor's degree,5+ years designing and developing BPM/Appian applications,Appian Level 2/3 certification,software development experience (.NET,Java,C#,Visual Basic),HTML/CSS,JavaScript,Appian admin and integrations,MS-SQL,Agile experience.
Appian, .NET, Java, Visual Basic, C#, HTML/CSS, JavaScript, Appian Admin console, Appian Plug-Ins, MS-SQL, Azure pipelines, AWS
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3w
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Sr. Software Engineer II - Catalog
California, United States
$187k-$235k/yr RemoteFull Time
iHerb
iHerb: Global e-commerce retailer of health and wellness products.
10+ YOE10+ years software engineering; daily use of AI-assisted development tools; full-stack proficiency (.NET/C#, Go, Python, Java, React); production ownership, testing, CI/CD, relational DB experience.
Claude Code, GitHub Copilot, Cursor, .NET, C#, Go, Python, Java, React, MS SQL Server, Postgres, REST API, CI/CD, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Gmail, Google Drive, Google Docs, Google Sheets, Google Forms
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1w
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Sr. Sage 300 Developer
Poway, California, United States
$130k-$135k/yr OnsiteFull Time
Chef Works
Chef Works: Designs and sells professional culinary and hospitality uniforms.
7+ YOE7+ years software development with expert Sage 300 ERP, VB6, C#/.NET, Python, and SQL Server; experience with integrations, reporting, and mentoring.
Sage 300 ERP, COM API, Web APIs, Orchid Extender, VB6, C#, .NET Framework, Python, Microsoft SQL Server, T-SQL, Crystal Reports, Sage Intelligence, REST APIs, Swagger/OpenAPI, JSON, XML, Git, CI/CD
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2mo
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Software Engineer (C#/.NET)
New York City or Carlsbad
$101k-$134k/yr OnsiteFull Time
Rockstar Games
Rockstar GamesNASDAQ: TTWO: Developer and publisher of world-class interactive entertainment and games.
4+ YOE4+ years building scalable distributed systems; expert in C# or C++; strong CS fundamentals, API design, web service scalability/security, and database (MSSQL) experience.
Windows Server, SQL Server, IIS, .NET, C#, C++, MSSQL, Perforce, Xbox Live, Sony NP, Games for Windows Live
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1mo
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Sr. Software Engineer II - Catalog
United States or California
$187k-$235k/yr RemoteFull Time
iHerb
iHerb: Online retailer of vitamins, supplements, and health products.
10+ YOE10+ years software engineering experience; full-stack proficiency (backend, React frontend, relational data); production ownership, on-call experience, CI/CD and testing; experience with .NET/C#, Go, Python, or Java; MS SQL Server/Postgres; daily use of AI-assisted development tools.
Claude Code, GitHub Copilot, Cursor, .NET, C#, Go, Python, Java, React, MS SQL Server, Postgres, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Gmail, Google Drive, Google Docs, Google Sheets, Google Forms
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