79 sr net developer jobs at 46 companies in SeaTac, WA
18h
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Senior .NET Developer
Olympia, Washington, United States
$96k-$126k/yr HybridFull Time
8+ YOEBachelor’s degree in IT, computer science, or related field plus 8 years in complex IT, including 6 years developing applications with C#, .NET, Entity Framework, or similar tools.
C#, .NET, MS Entity Framework, Blazor, Angular, React/Vite, Git, Azure DevOps, GitHub Actions, SQL, GitHub Copilot, Claude Code, Microsoft 365, Microsoft Teams, Microsoft Outlook, Microsoft Word, Microsoft OneNote, Microsoft PowerPoint
19h
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Senior .Net Developer
Olympia, Washington, United States
$96k-$126k/yr HybridFull Time
8+ YOEBachelor's degree in IT, Computer Science, or related field, 8 years in complex IT, including 6 years developing applications with C#, .NET, Entity Framework, or similar tools.
C#, .NET, Microsoft Entity Framework, Blazor, Angular, React, Vite, Git, Azure DevOps, GitHub Actions, SQL, GitHub Copilot, Claude Code, Microsoft Teams, Microsoft Outlook, Microsoft Word, Microsoft OneNote, Microsoft PowerPoint, Microsoft 365
1mo
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.Net/React Senior Developer
Seattle, Washington, United States
$100k-$120k/yr OnsiteFull Time
5+ YOE5+ years experience; proficiency in .NET/.NET Core,C#,React,SQL; experience with application architecture, microservices,Azure and CI/CD; bachelor's in computer science.
.NET Core, .NET, C#, HTML5, CSS3, React, JavaScript, SQL, PL SQL, SQL Server, Oracle, Microsoft Azure, Azure Storage, CI/CD
1w
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Sr. Application Engineer (DevOps, AI)
Seattle, Washington, United States
$99k-$140k/yr HybridFull Time
5+ YOE5+ years with .NET/C#/SQL and Python, strong DevOps experience with Azure Pipelines or GitHub Actions, API and IAM (MFA/RBAC) skills, experience with Azure AI and intelligent agents, Bachelor's preferred.
.NET, C#, SQL, Python, Azure DevOps, Azure Pipelines, GitHub Actions, Git, Azure AI Services, Microsoft Copilot, ANSI SQL, T-SQL, CLI
1w
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Sr. Software Engineer
Seattle, Washington, United States
$130k-$145k/yr OnsiteFull Time
4+ YOERequires 4+ years of software engineering experience, .NET/C#, JavaScript, SQL Server, relational database expertise, front-end framework experience, full-stack understanding, and willingness to explore new technologies.
.NET, C#, SQL Server, React, image processing, computer vision, LLMs, full-text search, JavaScript, Blazor
1mo
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Sr Software Developer - PEGA Platform
Washington or Oregon or Idaho or Arizona or Texas or Georgia or South Carolina or North Carolina or California or Virginia or Tukwila or United States
$110k-$205k/yr HybridFull Time
5+ YOE5+ years building production software with Pega; bachelor's in CS or equivalent; experience with secure development, CI/CD, cloud platforms, SOLID/OOP, testing, Git, and integrations with SQL/NoSQL and front-end frameworks.
PEGA, Pega Blueprint AI, SQL Server, Oracle, Cosmos DB, React, Angular, Azure DevOps Services, GitHub Actions, Jenkins, TeamCity, PowerShell, bash, .NET, C#, node.js, TypeScript, JavaScript, Python, Kubernetes, Git, Azure, AWS, Google Cloud
1mo
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Senior Applications Developer
Seattle, Washington, United States
HybridFull Time
10+ YOE10+ years software development experience; expert C# (.NET) and Visual Studio; strong knowledge of threading, async/await, LINQ, REST, Azure; SQL and Protobuf experience; Agile teamwork and strong communication.
C#, .NET, Visual Studio 2022/2023, Azure, SQL, Protobuf, Angular, WebAssembly, HTML, CSS, TypeScript, JavaScript, jQuery, Python, Kubernetes, C++, LLMs
1mo
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Senior C# Developer (Data Management)
Warsaw or Seattle
HybridFull Time
5+ YOE5+ years commercial software development experience; proficiency in C# and .NET, software architecture, data structures and algorithms; problem-solving mindset and English proficiency.
C#, .NET, Microsoft Azure, Microsoft Entra ID, Veeam Data Command Center, Veeam Service Provider Console, Veeam VDC Azure/Entra ID services
3w
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Senior Engineer - Durable Compliance
Renton or Palo Alto or Richardson or Bethesda
$75k-$215k/yr HybridFull Time
3+ YOE4+ years software development experience with Duck Creek and 3+ years with .NET/C#; experience in architecture, cloud, DevOps, monitoring, security, and microservices; bachelor's degree or equivalent.
Duck Creek, C#, .NET, Visual Studio, SQL Server, ASP.NET, MVC, Web API, Java, Python, Go, JavaScript, TypeScript, HTML-5, Angular, React, XML, JSON, RESTful Web Services, Event Driven Architectures, SQL, NoSQL, Docker, Kubernetes, Azure, Azure DevOps, AWS, GCP, ManuScript, CBO, Author
1mo
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Senior Software Engineer
Redmond or New York
$120k-$235k/yr HybridFull Time
4+ YOEBachelor's in CS or related (or equivalent), 4+ years engineering experience; proficiency in C/C++/C#/Java/JavaScript/Python; experience with Windows/.NET development, CI/CD, telemetry, and performance optimization.
C, C++, C#, Java, JavaScript, Python, .NET, Win32 API, WinUI3, UWP, CI/CD
1mo
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Staff Software Engineer- Eng
Seattle, Washington, United States
$130k-$214k/yr HybridFull Time
7+ YOEBachelor's degree in CS/Engineering,7+ years software development,expertise in C#, .NET, Python, Java or JavaScript,cloud experience (Azure/AWS/GCP),GitHub,telemetry/observability,leadership and communication skills.
C#, .NET, Python, Java, JavaScript, Azure, AWS, GCP, GitHub, JUnit, Selenium, Claude Code
3w
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Sr Tools Applications Engineer, Amazon Leo
Austin or Bellevue
$151k-$205k/yr OnsiteFull Time
Bachelor's degree,5+ years CAD customization experience with strong Siemens NX expertise; proficiency in C++,C#,Python and .NET; CAD-PLM/ERP integration experience;U.S. citizenship required for export control.
Siemens NX, C++, C#, Python, .NET, PLM, ERP
1w
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Software Development Engineer III - Corporate Services
Mountlake Terrace or Alaska or Arizona or Arkansas or California or Colorado or Florida or Georgia or Idaho or Iowa or Kansas or Kentucky or Maine or Michigan or Minnesota or Missouri or Montana or Nevada or New Hampshire or New Mexico or North Carolina or Oklahoma or Oregon or South Carolina or South Dakota or Tennessee or Texas or Utah or Washington or Wisconsin
$98k-$167k/yr RemoteFull Time
5+ YOEBachelor's in CS or equivalent,5+ years software development,experience with Azure,C#,Java,.NET,MS SQL Server,Power Platform,automated testing,Agile;strong technical and analytical skills.
Azure, C#, Java, .NET, Microsoft Visual Studio, MS SQL Server, Power Platform
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
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
1mo
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Senior Software Engineer (Backend)
Seattle, Washington, United States
$140k-$200k/yr RemoteFull Time
5+ YOE5+ years C#/.NET and SQL experience, 3+ years building REST APIs and cloud projects on Azure or AWS, experience designing technical solutions for engineers, strong communication and problem-solving skills.
C#, .NET, SQL Server, SQL, REST APIs, microservices, Azure, AWS, Slack
2mo
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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
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
2mo
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AI & Automation Engineer
Seattle, Washington, United States
$130k-$185k/yr OnsiteFull Time
5+ YOEBachelor's in CS or equivalent experience; 5+ years in software engineering/integration/automation; proficiency with Python or C#/.NET, REST APIs, webhooks, OAuth, Power Automate, Microsoft 365/Graph/SharePoint, DocuSign, Claude, and SQL; strong security and data-governance mindset.
Python, C#, .NET, REST APIs, webhooks, OAuth, Power Automate, Microsoft 365, Microsoft Graph API, SharePoint, OneDrive, DocuSign, Claude, SQL, CRM
3w
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Senior Software Development Engineer
Seattle, Washington, United States
$112k-$156k/yr HybridFull Time
5+ YOE5+ years software development experience building and operating Azure cloud-native distributed systems; strong C#, .Net Framework, SQL Server, REST APIs, microservices, CI/CD, IaC, security, incident response, and AI-assisted tooling experience.
Azure, C#, .Net Framework, SQL Server, REST APIs, Microservices, CI/CD, infrastructure-as-code, GitHub Copilot, Claude, Azure Service Bus, Kafka
6d
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Senior Software Engineer , Full Stack ( Seattle / Provo Hybrid )
Provo or Seattle or Chicago or Boston or South Bend
$100k-$138k/yr HybridFull Time
5+ YOERequires a bachelor's degree or comparable experience, 5+ years in Angular and React mobile-responsive development, .NET Core, SQL Server, APIs, testing, agile methods, and technical leadership.
C#, .NET Core, Angular, React, JavaScript, CSS, JSON, Docker, Kubernetes, CI/CD, GitLab, Microsoft SQL Server, SQL
1mo
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Senior Engineer AppDev
Chennai or Coimbatore or Bengaluru or Hyderabad
OnsiteFull Time
Hands-on web development with Java, .Net, Python, Go, C#, or JavaScript; experience with Angular/React/NodeJS, microservices, Docker, relational and NoSQL databases, and cloud platforms (AWS/Azure/Google).
Java, .Net, Python, Go, C#, JavaScript, Angular, React, NodeJS, Docker, Postgres, MySQL, Oracle, MongoDB, Amazon DynamoDB, Cassandra, Amazon Web Services, Microsoft Azure, Google