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Top C# Jobs in Seattle, WA

43 Minutes Ago
Remote
Seattle, WA
Senior level
Senior level
Fintech • Payments • Financial Services
Looking for a Senior Software Developer with 10+ years of experience in .NET, DevExpress XAF, and web development to join a rapid prototyping team on a six-month contract.
Top Skills: .Net.Net CoreAsp.Net CoreC#CSSDevexpress Expressapp FrameworkGitHTMLJavaScriptJquery
Reposted 2 Hours Ago
Remote
Seattle, WA
168K-252K Annually
Senior level
168K-252K Annually
Senior level
Software
The Staff Software Engineer at SGNL will build and launch large, distributed systems, mentor junior engineers, and contribute to architecture and design for security-focused applications.
Top Skills: C#C++GoJava
3 Hours Ago
Remote
Seattle, WA
240K Annually
Senior level
240K Annually
Senior level
Machine Learning • Software
As a Staff Software Engineer, you will design and build scalable backend systems, manage technical debt, and contribute to software solutions in a collaborative environment.
Top Skills: C#JavaPythonScalaSQL
3 Hours Ago
Remote
Seattle, WA
150K-165K Annually
Senior level
150K-165K Annually
Senior level
Security
The Senior Corporate IT Systems Engineer will design, implement, and manage identity platforms and corporate SaaS applications, ensuring security and compliance while collaborating with business units.
Top Skills: Atlassian Product SuiteC#ConfluenceGoogle WorkspaceJIRAOktaOpsgeniePowershellPythonSaaSSlackZendeskZoom
3 Hours Ago
Remote
Seattle, WA
Mid level
Mid level
HR Tech • Other • Professional Services
Join an expert annotation team to create training data for AI models, evaluating code quality, solving coding problems, and writing tests.
Top Skills: ApexCC#C++DartGoHTMLJavaJavaScriptMatlabNetPHPPythonRRubyRustShellSQLSwiftTypescript
5 Hours Ago
Remote
Seattle, WA
Mid level
Mid level
Information Technology • Consulting
Design, develop, and maintain backend systems using Golang, collaborate with marketing and product teams, and troubleshoot system performance.
Top Skills: C#Facebook AdsGoGoogle AdsJavaPythonRuby
5 Hours Ago
Remote
Seattle, WA
60K-170K Annually
Mid level
60K-170K Annually
Mid level
Gaming
Build and develop web applications, manage a game live operations platform, collaborate on product requirements, and contribute to the technology stack.
Top Skills: AWSC#GoNext.JsNode.jsReactTypescript
5 Hours Ago
Remote
Seattle, WA
Senior level
Senior level
Fitness
The Senior Backend Engineer at Eight Sleep will enhance product features, maintain a data processing pipeline, and support distributed systems to improve customer experiences.
Top Skills: .Net CoreC#Cloud ServicesF#JavaKotlinNode.jsPythonScalaTypescript

Featured Jobs

6 Hours Ago
Remote
Seattle, WA
Mid level
Mid level
Information Technology • Consulting
Design, develop, and maintain backend systems using Golang, collaborate with product teams, optimize applications, troubleshoot technical issues, and recommend new features.
Top Skills: C#GoJavaPython
7 Hours Ago
Remote
Seattle, WA
Mid level
Mid level
Insurance
As a Full Stack Engineer, you will design and implement features, develop scalable APIs, maintain web applications, and improve engineering standards.
Top Skills: C#CSSHTML5JavaKotlinScalaSwiftTailwindTypescriptVue 3
9 Days Ago
Hybrid
Seattle, WA
140K-165K Annually
Senior level
140K-165K Annually
Senior level
Information Technology • Consulting
The Lead Software Engineer will oversee software development lifecycles, mentor teams, enforce coding standards, and collaborate with stakeholders to deliver high-quality software solutions.
Top Skills: .NetAngularAzureC#Chatbot Development FrameworksGitJIRANlpReact
15 Hours Ago
Remote
Seattle, WA
Mid level
Mid level
Financial Services
Design and develop scalable software solutions while collaborating with teams, optimizing applications, and mentoring junior engineers. Requires proficiency in frontend or backend development.
Top Skills: .NetAWSC#Ci/CdCSSDynamoDBGCPGraphQLHTMLJavaScriptMySQLReactTypescript
16 Hours Ago
Remote
Seattle, WA
103K-185K Annually
Mid level
103K-185K Annually
Mid level
Events
As a Fullstack Engineer, you'll build APIs and services for search relevance, collaborate with teams to improve user experiences, and ensure code quality.
Top Skills: Asp.NetAWSC#C++DjangoDockerElasticsearchJavaOpensearchPHPPythonRuby on RailsReactReact NativeRubySolrSymphony
19 Hours Ago
Remote
Seattle, WA
Senior level
Senior level
Healthtech
The Senior Software Engineer will design and enhance AI-powered software solutions to streamline workflows, mentor engineers, and improve coding efficiency.
Top Skills: C#Python
Yesterday
Remote
Seattle, WA
Senior level
Senior level
Fintech • Software • Financial Services
You will build and optimize a scalable financial platform by using cloud technologies, driving best practices in both backend and frontend development, and mentoring junior engineers.
Top Skills: AWSC#CloudFormationDockerGCPJavaKubernetesNode.jsPythonReactTerraformTypescript
Reposted Yesterday
Remote
Seattle, WA
Senior level
Senior level
Software
As a Principal Engineer, you'll lead the design and implementation of scalable services, mentor teams, drive innovation, and enhance system performance.
Top Skills: C#C++ContainerizationGoJavaKubernetesMicroservices
Yesterday
Remote
Seattle, WA
148K-195K Annually
Senior level
148K-195K Annually
Senior level
Legal Tech • Software
Lead back-end software development with cloud technologies, mentor team members, and ensure quality and performance of applications.
Top Skills: .NetAWSC#OpensearchRedis
11 Days Ago
Seattle, WA
Senior level
Senior level
Fintech • Information Technology • Payments
As a Principal Engineer at Authorize.net, you'll lead modernization by containerizing applications, migrating to the cloud, and improving DevOps practices while mentoring engineering teams and defining technology roadmaps.
Top Skills: AWSAzureC#Ci/CdDevOpsGCPNoSQL
11 Days Ago
Seattle, WA
Senior level
Senior level
Fintech • Information Technology • Payments
The Lead Software Engineer will develop and innovate payment technologies, collaborating across teams, enhancing software quality, and guiding code standards while handling complex global challenges.
Top Skills: C#C++DockerJavaJavaScriptKubernetesPythonReact
Yesterday
Remote
Seattle, WA
92K-162K Annually
Senior level
92K-162K Annually
Senior level
Fintech • Healthtech • Analytics
R1 is seeking a Senior DataOps Engineer to design, develop, and maintain solutions in healthcare RCM, using Agile methodologies and various technologies.
Top Skills: AWSAzureC#Cosmos DbDatabricksMongoDBScalaSparkSQL ServerTerraform
Reposted Yesterday
Remote
Seattle, WA
Expert/Leader
Expert/Leader
HR Tech
The Principal Software Engineer will drive the development and optimization of a leading HR application, focusing on backend processes and mentoring fellow engineers.
Top Skills: C#GitJavaMySQLPHPPythonReactTypescript
Yesterday
Remote
Seattle, WA
Mid level
Mid level
Cloud • Marketing Tech
As a Scala Software Engineer at Avetta, you'll design and improve RESTful APIs, collaborate with the agile team, write clean code, and automate deployment processes.
Top Skills: C#JavaJavaScriptMicroservicesRestful ApisScala
Reposted Yesterday
Remote
Seattle, WA
Senior level
Senior level
Information Technology • Software • Consulting
Design, develop, and test features for client and internal projects. Write clean code, solve complex problems, and collaborate with other developers.
Top Skills: .Net CoreAngularAngular MaterialAzureAzure DevopsC#CosmosdbEntity FrameworkJavaScriptMicroservicesMongoDBNode.jsSQLTypescriptWeb Api
Yesterday
Remote
Seattle, WA
143K-237K Annually
Junior
143K-237K Annually
Junior
Cloud • Software
Plan, develop, and implement user interfaces and cloud-based applications. Resolve technical issues, enhance software productivity, and develop testing tools.
Top Skills: Agile MethodologiesCC#CSSEclipseHTMLJavaPHPPythonServletsSQL
2 Days Ago
Remote
Seattle, WA
Senior level
Senior level
Fintech • Information Technology • Analytics
Lead the development of intelligent vision systems through advanced computer vision models for image processing, object recognition, and real-time barcode scanning.
Top Skills: AzureC#CudaGCPHTML5JavaScriptMauiOpencvPythonTensorFlowTensorflowrt

Top Seattle, WA Companies Hiring C# Developers

See All
Axonius Thumbnail
Security
New York, NY
Machinify Thumbnail
Software • Machine Learning
Palo Alto, CA
96 Employees
SGNL Thumbnail
Software
Palo Alto,, California
35 Employees
G2i Thumbnail
Professional Services • Other • HR Tech
Fully Remote
201 Employees
Red Cell Partners Thumbnail
Payments • Fintech • Financial Services
Los Angeles, California
64 Employees
GoFasti Thumbnail
Information Technology • Consulting
Dallas , Texas
71 Employees
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