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36 net core developer jobs at 27 companies in California

1mo
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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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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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2mo
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Sr. Net Architect
Berkeley, California, United States
OnsiteFull Time
Matrix Precise
Matrix Precise: Provides artificial intelligence solutions and technology consulting services.
7+ YOELead design/development of .NET 8 ASP.NET Core apps; expert in SQL Server; frontend in React/Angular; healthcare/LIS domain experience preferred.
C#, REST, Microsoft SQL Server, T-SQL, Stored procedures, Query optimization, Indexing strategies, Performance tuning, Database schema design, ASP.NET Core, React, Angular, Git, CI/CD, Python, Sitecore, Tableau, Power BI
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4w
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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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3d
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Senior Full-Stack Developer (.NET/React)
Berkeley, California, United States
OnsiteFull Time
Access Softek
Access Softek: Provides digital banking software for credit unions and banks.
5+ YOE5+ years experience; strong C#, .NET/ASP.NET Core, TypeScript, React; HTML/CSS/SQL/MS SQL; API design, unit/integration testing, CI/CD; experience with legacy and service-based systems.
React, TypeScript, C#, .NET, ASP.NET Core, HTML, CSS, SQL, Microsoft SQL Server, AWS, Docker, Kubernetes, GitHub Copilot, Cursor, JetBrains AI, Claude
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2mo
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Senior Developer
Foothill Ranch, California, United States
$102k-$161k/yr HybridFull Time
Lentegrity
Lentegrity: Provider of automotive loans through an independent dealer network.
7+ YOE7+ years software development experience; Bachelor's in Computer Science/IT or related; proficiency with .NET (.NET Framework/.NET Core) and Microsoft SQL Server; experience with Microsoft Server and Azure; strong communication, problem-solving, and mentorship skills.
Microsoft Server, Azure, Microsoft SQL Server, .NET Framework, .NET Core
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3w
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Senior Software Engineer
Pleasanton, California, United States
$156k-$196k/yr HybridFull Time
BlackLine
BlackLineNASDAQ: BL: Provides cloud software to automate financial close and accounting.
5+ YOEBS/MS in Computer Science with significant software development experience; strong background in C#, .NET/.NET Core, SQL, distributed systems, RESTful APIs, cloud architectures, and building SaaS web applications.
C#, .NET, .NET Core, HTML, JavaScript, CSS, SQL, PostgreSQL, NoSQL, Azure, AWS, GCP, Docker, Kubernetes, Kafka, SQS, RabbitMQ
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1mo
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Senior Developer
London or California
OnsiteFull Time
Universal Music Group
Universal Music GroupEuronext Amsterdam: UMG: Produces, distributes, and publishes music and manages global artists.
Commercial experience with .NET Core/ASP.NET Core, AWS serverless, Kafka/AWS MSK, Docker/Kubernetes, Git and CI/CD, SQL and NoSQL databases; agile experience and ability to mentor others.
.NET Core, ASP.NET Core, React, Angular, TypeScript, AWS, Lambda, API Gateway, Step Functions, DynamoDB, S3, Kafka, AWS MSK, Docker, Kubernetes, Git, GitHub Actions, Azure DevOps, GitLab CI, SQL Server, PostgreSQL, MySQL, MongoDB, GCP, CloudFormation, CDK, Terraform, MCP (Model Context Protocol), MLOps
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1mo
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Software Engineer (Backend)
Lisbon or Portugal or Palo Alto or Charlotte or Belfast or Berlin
HybridFull Time
Intapp
IntappNASDAQ: INTA: Cloud business management software for professional and financial services.
4+ YOE4+ years hands-on .NET (C#, ASP.NET, .NET Core) experience; experience with microservices, CI/CD, Kubernetes/Docker, Azure and SQL Server; strong coding, security, and performance focus; fluent English.
.NET, .NET Core, ASP.NET, C#, SQL Server, Azure, AWS, Google Cloud, Kubernetes, Docker, Jenkins, Git, CI/CD
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5d
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Software Engineer Support - SOC Security Information Management
Rancho Cordova or Sacramento or Vacaville or San Jose
OnsiteFull Time
Anvaya Solutions
Anvaya Solutions: Provides cybersecurity consulting and information security assessment services.
5+ YOE5+ Mgmt5+ years cloud and software engineering experience (.Net/.Net Core), database and analytics, REST/SOAP APIs, SQL/KQL, GIT, cloud security, automated testing, and SIEM/SOAR training.
.Net, .Net Core, REST, SOAP, SQL, Kusto Query Language (KQL), GIT, GitHub, Azure DevOps, GitHub Actions, Docker, SIEM, SOAR
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1mo
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Web Developer
United States or New York City or Chicago or California or Colorado or Washington
RemoteFull Time
The IMA Group
The IMA Group: Provides medical evaluation and clinical research services to organizations.
Strong experience with C#, ASP.NET/.NET Framework/.NET Core, React or Python, SQL Server, HTML/CSS/JavaScript, Git; ability to work independently in a remote environment and support AI/cloud initiatives.
C#, ASP.NET, .NET Framework, .NET Core, React, Python, SQL Server, HTML, CSS, JavaScript, Claude Code, GitHub Copilot, Microsoft Azure, Git, API
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1w
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Senior Software Engineer
California or Texas or Washington or Florida or Tennessee or New York or United States
$155k-$165k/yr RemoteFull Time
GOVX
GOVX: Ecommerce marketplace providing exclusive discounts to military and first responders.
Proficiency in .NET Core, C#, T-SQL, React; experience designing distributed systems, leading/mentoring developers, delivering end-to-end projects, and strong analytical and communication skills.
.NET Core, C#, T-SQL, React, Visual Studio, VS Build Process, gRPC, ASP.NET Web API, Git, MS SQL Server, CosmosDB, Azure, Kubernetes
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1w
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Application Developer
Rancho Santa Margarita, California, United States
$70k-$130k/yr OnsiteFull Time
Applied Medical
Applied Medical: Manufacturer of advanced medical devices and surgical products.
Bachelor's or equivalent experience; proficiency in C#, .NET Core, React, TypeScript; experience with SQL/NoSQL databases, Azure, Docker/Kubernetes, Git, and automated testing frameworks.
C#, .NET Core, React, TypeScript, SASS, SCSS, Webpack, Vite, npm, yarn, SQL Server, PostgreSQL, Azure Cosmos DB, RESTful APIs, GraphQL, Microsoft Azure, Docker, Kubernetes, Figma, xUnit, NUnit, Cypress, Playwright, React Testing Library, Azure Active Directory (Azure AD), Auth0, Azure DevOps, GitHub, Git, GitHub Actions, GitHub Copilot, Azure Service Bus, RabbitMQ
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2w
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Software Engineer
San Diego, California, United States
$100k-$125k/yr OnsiteFull Time
Tactical Engineering & Analysis
Tactical Engineering & Analysis: Provides systems engineering and analysis for military combat systems.
2+ YOEBachelor of Science in STEM required, 2+ years development experience with C#/.NET, Microsoft PowerShell, WinUI 3 and Windows, familiarity with SDLC/Agile, testing, EF Core/SQLite; security clearance required or obtainable.
C#, Python, .NET Framework, Microsoft PowerShell, WinUI 3, Windows OS, EF Core, SQLite, RHEL 8, Linux, AWS, Jenkins, Groovy, Artifactory, Jira, Bitbucket, Confluence, MVVM
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2w
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Software Engineer - Hybrid
San Francisco, California, United States
$117k-$146k/yr HybridFull Time
Workers' Compensation Insurance Rating Bureau of California
Workers' Compensation Insurance Rating Bureau of California: Collects and analyzes California workers' compensation insurance data.
2+ YOE2+ years software development experience; knowledge of Microsoft .NET Core, ASP.NET, C#, SQL Server; cloud experience (Azure or AWS); familiarity with HTML/CSS/JavaScript; strong problem-solving and communication skills.
Microsoft .NET Core, ASP.NET, C#, Microsoft SQL Server, Azure, AWS, HTML, CSS, JavaScript
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3mo
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Senior Software Developer
San Diego, California, United States
$102k-$199k/yr HybridFull Time
Arthur J. Gallagher & Co.
Arthur J. Gallagher & Co.NYSE: AJG: Global insurance brokerage and risk management services provider.
7+ YOE7+ years of software development with C#/.NET; healthcare EDI (X12), HIPAA; RESTful APIs; Microsoft stack (ASP.NET Core, SQL Server, Azure); Git, CI/CD, containers; AI tooling familiarity; strong problem solving; excellent communication.
C#, ASP.NET Core, SQL Server, Azure, RESTful APIs, Git, CI/CD, Containerization, Healthcare IT standards, X12, HIPAA
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1w
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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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2mo
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Senior Software Engineer- Backend
Concord, California, United States
$130k-$150k/yr OnsiteFull Time
Kyocera Document Solutions
Kyocera Document SolutionsTokyo Stock Exchange: 6971: Manufacturer of document management systems and printing hardware.
4+ YOE4+ years in software development; strong C#, .NET Core, Go; REST APIs; SQL/NoSQL; microservices; Docker/Kubernetes; AI-assisted tools; full-stack knowledge preferred.
C#, .NET Core, Go, SQL, NoSQL, REST, WebSocket, JSON, JavaScript, TypeScript, PostgreSQL, Redis, RabbitMQ, Kafka, Docker, Kubernetes, Git, CI/CD, XUnit, AI-assisted development tools
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2w
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Senior Software Engineer
Connecticut or West Virginia or South Carolina or Pennsylvania or New Hampshire or Hawaii or California or Michigan or Kentucky or Arizona or New Mexico or Nevada or Florida or Alaska or Washington or Oregon or Texas or Alabama or Mississippi or Tennessee or Illinois or Wisconsin or Louisiana or Arkansas or Missouri or Iowa or Minnesota or Oklahoma or Kansas or Nebraska or South Dakota or North Dakota or Colorado or Wyoming or Idaho or Montana or Utah or Vermont or North Carolina or Massachusetts or Georgia or Rhode Island or New York or Maryland or Delaware or Virginia or Ohio or New Jersey or Maine
$110k-$140k/yr RemoteFull Time
Worksoft: Automation platform for enterprise business process testing and discovery.
10+ YOE10+ years web development experience (C#, .NET, ASP.NET Core) and production AI/ML experience (LLMs, PyTorch/TensorFlow, LangChain, etc.); Bachelor’s in CS/Engineering or 15+ years experience; strong problem solving and customer-facing troubleshooting skills.
OpenAI, Azure OpenAI, Anthropic Claude, Gemini, PyTorch, TensorFlow, scikit-learn, ML.Net, LangChain, Semantic Kernel, RAG, vector databases, LLMs, ASP.Net Core, Web APIs, REST, JWT, OAuth, Azure AD/Entra ID, Blazor, Angular, MS Sql Server, EF Core, WinForms, WPF, .Net MAUI, Service Bus, Kafka, MSBuild, Git
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1w
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Sr Software Engineer II - Fullstack - Apex Events
Los Angeles, California, United States
$145k-$165k/yr HybridFull Time
AXS
AXS: Provides digital ticketing and marketing solutions for live events.
6+ YOE6+ years software development experience; strong web fundamentals (HTML,CSS,JavaScript,TypeScript); React/Next; C# and .NET Core; relational databases; distributed services; excellent communication and mentoring skills.
HTML, CSS, JavaScript, TypeScript, ReactJS, NextJS, C#, .NET Core, Microsoft SQL Server, Oracle, MySQL, PostgreSQL, AWS, NodeJS, Docker, Kubernetes, Git, Kafka, Elasticsearch, DynamoDB, CI/CD, TDD, BDD
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