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Top Senior Level C# Jobs in Seattle, WA

99+ Job Results
2 Days Ago
Seattle, WA
Remote
3,300 Employees
5-7 Years of Experience
3,300 Employees
5-7 Years of Experience
Information Technology • Security • Cybersecurity
As a Senior Software Engineer at Cloudflare, you will be instrumental in defining and building the future of D1, Cloudflare's first serverless database. You will enable developers to build full-stack applications and work on high-volume SaaS applications. Required skills include JavaScript, Typescript, and knowledge of modern programming languages like Go, Java, C#, Rust, or C++.
Top Benefits:
401-K
Child Care Benefits
Commuter Benefits
+45 More
3 Days Ago
Seattle, WA
Remote
10,000 Employees
150K-245K Annually
7+ Years of Experience
10,000 Employees
150K-245K Annually
7+ Years of Experience
Cloud • Information Technology • Sales • Security • Cybersecurity
Join the cloud backend team in the Platform product group working on authentication and authorization for a global leader in cybersecurity. Lead backend engineering efforts, leverage cloud systems to detect targeted attacks, mentor team members, and contribute to scalability and architecture improvements.
5 Days Ago
Seattle, WA
2,700 Employees
159K-210K Annually
7+ Years of Experience
2,700 Employees
159K-210K Annually
7+ Years of Experience
eCommerce • Fintech • Payments • Software • Financial Services
Oversee the technical vision, strategy, and systems of the privacy engineering team. Design and implement data privacy-enhancing features, tooling, and mechanisms, ensuring compliance with relevant privacy regulations. Develop tech privacy procedures and guidelines. Work with cross-functional teams to build software for privacy. Collaborate with security teams. Design for technical scale and implement privacy systems through code.
Top Benefits:
401-K
401-K Matching
Commuter Benefits
+48 More
7 Days Ago
Seattle, WA
Remote
200 Employees
7+ Years of Experience
200 Employees
7+ Years of Experience
Consumer Web • HR Tech
Looking for a dynamic Staff Engineer with 10+ years of .NET development experience to lead large-scale architecture initiatives and build Platform services at a fast-growing tech company. Must have expertise in developing on public cloud platforms and a track record of successful large-scale projects.
Top Benefits:
401-K
401-K Matching
Commuter Benefits
+14 More
7 Days Ago
Seattle, WA
Remote
364,000 Employees
5-7 Years of Experience
364,000 Employees
5-7 Years of Experience
Artificial Intelligence • Professional Services • Business Intelligence • Consulting • Cybersecurity • Generative AI
Lead the design, development, and implementation of generative AI solutions. Collaborate with cross-functional teams to translate business requirements into technical specifications. Architecting high-quality, scalable, and efficient software systems.
Top Benefits:
401-K
401-K Matching
Adoption Assistance
+66 More
2 Days Ago
Seattle, WA
148,000 Employees
112K-239K Annually
7+ Years of Experience
148,000 Employees
112K-239K Annually
7+ Years of Experience
Software
Develop amazing user experiences for applications and platform tools using the latest web technologies. Solve technical problems and build modern user interfaces that are performant, reliable, secure, responsive, and accessible.
3 Days Ago
Seattle, WA
1,248 Employees
124K-227K Annually
7+ Years of Experience
1,248 Employees
124K-227K Annually
7+ Years of Experience
AdTech
Lead Senior/Staff Software Engineer role at The Trade Desk, responsible for building new features, improving existing components, reviewing code, driving complex changes, and leveraging data for operational efficiency. Requires 7+ years of software development experience with a focus on improving developer experience and engineering processes.
Top Benefits:
401-K
401-K Matching
Commuter Benefits
+36 More
6 Days Ago
Seattle, WA
64 Employees
7+ Years of Experience
64 Employees
7+ Years of Experience
Other
Collaborates with business partners to provide recommendations for technology decisions, establishes standards and procedures for design and development, and leads systems analysis and implementation efforts. Requires 7+ years of experience in Microsoft.net framework, C#, and web application development. Proficiency in AWS, MSMQ, Windows Power shell scripting, Microsoft SQL server, and Git is preferred.
7 Days Ago
Seattle, WA
403 Employees
179K-269K Annually
7+ Years of Experience
403 Employees
179K-269K Annually
7+ Years of Experience
AdTech • Cloud • Machine Learning • Mobile • Retail
Lead feature development, design, optimization, testing, and maintenance of software applications and solutions for internal and external end users.
10 Days Ago
Seattle, WA
87,899 Employees
110K-225K Annually
5-7 Years of Experience
87,899 Employees
110K-225K Annually
5-7 Years of Experience
Fintech • Financial Services
Seeking a Senior Software Engineer to design, develop, and integrate technology solutions for the Equity Investments platform at a leading global financial services firm. Must have strong curiosity, passion for learning, and experience in large-scale software development.
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