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54 sr net developer jobs at 34 companies in Fairfield, CA

2mo
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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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1w
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Sr. Engineer, Software Development
Birmingham or Los Angeles or San Francisco or New York City or Miami or Tampa or Blue Ash or Cincinnati
$121k-$173k/yr HybridFull Time
Green Dot
Green DotNYSE: GDOT: Provides mobile banking and payment solutions to consumers and businesses.
5+ YOE5+ years software engineering experience, 1+ year technical leadership, proficiency in C#, .NET, SQL, Azure services, REST/OAuth2/OpenAPI, observability, and security/compliance in financial services.
C#, .NET, SQL, Azure API Management (APIM), Azure SQL, Cosmos DB, Key Vault, OAuth2, OpenAPI, Service Bus, Event Hubs, Datadog, Grafana, Git
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3mo
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Sr. Software Engineer - Java / SpringBoot / AWS
San Francisco, California, United States
$142k-$183k/yr HybridFull Time
Early Warning Services
Early Warning Services: Operates payment and risk solutions for the financial industry.
5+ YOE5+ years Java/C#/.NET experience; AWS, REST/SOAP, NoSQL; strong development and testing skills.
Java, Spring Boot, AWS, Unix/Linux, SQL, NoSQL, Redis, HBASE, Aerospike, XML, JSON, REST, SOAP, Cucumber, Selenium
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4w
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Sr. Staff, Instrument Software Engineer
South San Francisco, California, United States
$175k-$210k/yr OnsiteFull Time
Atlas Data Storage
Atlas Data Storage: A high-growth startup developing molecular computing and biological data storage technologies.
10+ YOESenior staff-level software engineer with ~10+ years experience; expertise in C/C++/C#/Rust/TypeScript/Python, firmware and hardware integration, RTOS, memory management, and large-data performance optimization.
C#, C++, C, Rust, TypeScript, Python, Git, AWS, Azure, GCP, .NET, WPF, RTOS, SPI, USB, 1G/10G Ethernet, FPGA, ASIC
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2w
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Engineer
San Ramon, California, United States
$100k-$120k/yr OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesNational Stock Exchange of India: TCS: Global provider of IT services, consulting, and business solutions.
8+ YOE8+ years .NET development experience with strong C# and OOP, SQL/T-SQL, Entity Framework, ADO.NET, WCF, WinForms; Agile experience and bachelor's in computer science required.
.NET 4.5, .NET Core, C#, Entity Framework, ADO.NET, LINQ, Task Parallel Library (TPL), WinForms, T-SQL, WCF, React, Web API, Microsoft Azure, Snowflake
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1mo
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Principal Solutions Developer , Prototyping and Customer Engineering (PACE)
Boston or Austin or Arlington or Seattle or New York or Herndon or Chicago or San Francisco or Dallas
$183k-$284k/yr OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
15+ YOE15+ years technical experience, bachelor's in CS/engineering/math (or equivalent), expertise in cloud architecture and CXO engagement, experience developing end-to-end solutions, programming with Python/JavaScript/Go/.Net/Java, EMR of distributed systems.
Python, JavaScript, Go, .Net, Java, AWS
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3mo
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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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15h
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Senior Software Developer
Sacramento or Sacramento County
$7k-$11k/mo HybridFull Time
State Controller's Office
State Controller's Office: California's fiscal controller managing state financial operations and assets.
Object-oriented software development, business analysis, coding, troubleshooting, SDLC collaboration, and strong communication; relevant experience with C# .NET, web services, APIs, SQL Server, and Azure DevOps preferred.
C#, JavaScript, C#.NET, ASP.NET, Microsoft Visual Studio, Microsoft SQL, Bootstrap, JQuery, Azure DevOps, Microsoft .NET Framework, Systems Development Lifecycle (SDLC), SQL Server Integration Services, SQL Server Reporting Services, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Web Services, Micro Services, APIs, N-tiered architectures
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2mo
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Senior Software Engineer (Tech Lead), Customer Domain Engineering
San Francisco or Denver or New York City
$209k-$240k/yr HybridFull Time
Forge Global
Forge GlobalNYSE: FRGE: Marketplace for trading private shares and pre-IPO stock.
8+ YOE8+ years of software engineering experience; API development with C#/.NET; event-driven systems; CQRS/Event Sourcing; strong SQL; fintech experience preferred; team leadership experience.
C#, .NET, Kafka, RabbitMQ, SQL
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1w
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IC Test Engineer
Santa Rosa, California, United States
$115k-$191k/yr OnsiteFull Time
Keysight Technologies
Keysight TechnologiesNew York Stock Exchange: KEYS: Manufactures hardware and software for electronic test and measurement.
5+ YOEBS/MS/PhD in Electrical Engineering,5+ years RF/mm-wave IC test experience,proficiency with RF test equipment,wafer probe calibration,software development in C#/C++/C/.NET/Visual Studio,analytical and debugging skills.
C#, C++, .NET, C, Visual Studio, ADS, network analyzer, signal source, spectrum analyzer
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1mo
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Software Engineer 3
Sacramento, California, United States
$144k-$183k/yr HybridFull Time
Berkshire Hathaway Homestate Companies
Berkshire Hathaway Homestate CompaniesNYSE: BRK.B: Provides commercial property, casualty, and workers' compensation insurance.
8+ YOEMinimum 8 years software engineering experience with C#/.NET and React; strong cloud/on‑prem/hybrid experience, CI/CD, IaC, containerization (Docker, Kubernetes), Agile, Jira, Git; bachelor's degree preferred; must be authorized to work in the US without sponsorship.
C#, .NET, React, Vue.js, Docker, Kubernetes, CI/CD, Infrastructure as Code (IaC), Terraform, Ansible, Jira, Git, Microsoft SQL Server, MongoDB, Microsoft Azure, AWS
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1mo
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Senior Salesforce Developer
Jacksonville or Dallas or Cincinnati or Los Angeles or Sacramento or Richmond or Minneapolis or Boston or Kansas City or Chicago or Tampa or Washington or San Antonio or Houston or Colorado Springs or Nashville or San Diego or Pittsburgh or Tacoma or New York or Phoenix or Miami or Fayetteville
HybridFull Time
Wounded Warrior Project
Wounded Warrior Project: Provides support services and mental health programs for veterans.
7+ YOE7+ years designing and implementing Salesforce solutions; 5+ years with Apex, LWC, Visualforce and integrations; Salesforce Platform Developer II required; Bachelor’s in CS/IS/software engineering or equivalent.
Salesforce CRM (Sales and Service Cloud), Force.com, Visualforce, Apex, Lightning Web Components, Cascading Style Sheets (CSS), HTML, Java, .NET, Data Loader, AppExchange, React, React Native, SQL
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1mo
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Senior Software Engineer, Back-End (Payments)
United States or Santa Ana or San Francisco or Oakland or Berkeley or New Jersey or Texas or Florida or Shanghai or Hong Kong or Japan or Canada or Mexico or Germany or France
$141k-$229k/yr HybridFull Time
Collectors
Collectors: Providing authentication and grading services for high-value collectibles.
6+ YOE6+ years engineering experience, deep C#/.NET backend skills, frontend experience with React/Svelte/TypeScript, payments/gateway and distributed-systems experience, observability and security mindset.
Stripe, PayPal, C#, .NET, React, Svelte, TypeScript, PostgreSQL, DynamoDB, Kafka, Kubernetes, AWS, Datadog
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1mo
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Senior Software Engineer – Platform (Containers & Kubernetes)
San Leandro, California, United States
$118k-$196k/yr HybridFull Time
AVEVA
AVEVA: Industrial software for engineering and operational performance management.
Hands-on container and OCI image workflow experience, Kubernetes/Helm, CI/CD (Azure DevOps, GitHub Actions, Jenkins), cloud (Azure/AWS/GCP), container security, Linux, scripting (Python/PowerShell/Bash/Go), and C#/.NET experience.
Trusted Container Registry (TCR), Azure DevOps, GitHub Actions, Jenkins, Kubernetes, Helm, Azure, AWS, Google Cloud, Linux, Python, PowerShell, Bash, Go, C#, .NET, Cosign, Sigstore, BlackDuck, Trivy, OCI, SBOMs, SLSA, NIST SSDF
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3mo
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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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1w
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IC Test Engineer
Santa Rosa, California, United States
$115k-$191k/yr OnsiteFull Time
Keysight Technologies
Keysight TechnologiesNYSE: KEYS: Provides electronic design, test, and simulation software and hardware.
5+ YOEBS/MS/PhD in electrical engineering, 5+ years IC/mm-wave test experience, RF characterization, wafer probe calibration, test automation and C/C#/C++/.NET programming experience.
C#, C++, .NET, C, Microsoft Visual Studio, ADS, network analyzer, signal source, spectrum analyzer
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1mo
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Senior Quality Engineer
Budapest or Berlin or Paris or San Francisco or Singapore
HybridFull Time
greehill
greehill: Provides digital twin technology for urban forest management.
Strong software engineering background, experience building test automation frameworks, familiarity with Playwright/Cypress/Selenium, static code analysis, API and web testing, CI/CD integration, and mentoring developers.
Playwright, Cypress, Selenium, TypeScript, NodeJS, React, .NET, GitHub Actions, Azure DevOps, Docker, CI/CD
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4w
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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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2w
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Senior Software Engineer - Python/Agentic AI
Pleasanton, California, United States
$170k-$213k/yr HybridFull Time
BlackLine
BlackLineNASDAQ: BL: Provides cloud-based financial close and accounting automation software.
7+ YOE7+ years test automation and software testing experience for web, mobile, SaaS and RESTful APIs; strong OOP (C#/.NET), SQL, cloud and mobile automation skills; master's degree in CS/Math or related.
Appium, Selendroid, C#, .NET Core, NUnit, XUnit, MSTest, SQL, Google Cloud, AWS, Azure, Mesos, Kubernetes, Nomad, Kafka, SQS, RabbitMQ, HTML, JavaScript, CSS
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1mo
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Senior Solutions Engineer
United States or San Mateo or New York City or Boston or Salt Lake City
RemoteFull Time
Overjet
Overjet: AI platform for dental diagnostics and practice management.
5+ YOE5+ years in a customer-facing technical role; hands-on SQL, Microsoft Windows, .NET/C#, cloud (AWS, GCP, or Azure), and Python; strong communication, troubleshooting, and implementation skills; US-based (Mountain or Pacific time preferred).
IRIS Smart Image Capture, RCM, SQL, Microsoft Windows, .NET, C#, AWS, GCP, Azure, Python
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