Top Senior .NET Developer Jobs

Develop and maintain full stack web applications using .NET. Design and implement microservices on Azure, and manage APIs using Azure API Management. Collaborate on architecture and deliver production-ready services for a San Ramon, CA based full-time role requiring significant hands-on experience.

Lead development of enterprise C#/.NET WPF desktop applications, design reusable components and APIs, drive modernization and technical design, build/maintain CI/CD pipelines, enforce engineering/security standards, collaborate with product/architecture/DevOps teams, and mentor junior engineers to ensure scalable, secure, reliable delivery.

Lead technical design and deliver secure, scalable C#/.NET software for trading systems. Drive architecture, coding, code review, automation, resiliency, CI/CD, and adoption of AI-assisted engineering practices while mentoring teams and engaging vendors.

Lead development and support of enterprise insurance applications on the Microsoft .NET stack. Design, build, and maintain secure, scalable systems and integrations, troubleshoot production issues, modernize architecture and cloud adoption, and improve CI/CD and automated testing while collaborating with product, project, and business stakeholders.

Hands-on senior software engineer responsible for designing, developing, and modernizing enterprise .NET microservices and RESTful APIs. Leads technical decisions, mentors engineers, builds containerized services (Docker/Kubernetes), integrates event streaming (Kafka), supports CI/CD pipelines, ensures security, performance, and operational readiness, and collaborates with product, QA, and platform teams.

The Senior Software Engineer develops and maintains Sports Trading applications using .NET and SQL Server, enhancing existing functions and providing technical guidance.

Design, build, and operate .NET backend services and APIs using C#/ASP.NET Core and EF Core/SQL. Author and iterate specification artifacts (OpenSpec), leverage AI coding assistants, implement automated tests, ship via CI/CD to the cloud, review peers' specs/code, mentor engineers, and collaborate with product, QA, and cross-functional teams to deliver production services.

The .NET Developer will collaborate in Agile teams to design, implement, and maintain software solutions, ensuring high-quality code and performance optimization. Responsibilities include coding, debugging, and writing tests.

Design, build, and maintain production-grade .NET web applications and APIs on Azure. Own full-stack delivery from data models and SQL to front-end components, CI/CD, testing, and architecture. Collaborate with product and delivery teams, participate in code reviews, and ensure secure, observable, well-tested services.

Design, build, and maintain web pages and web applications end-to-end. Coordinate with other development teams (D365 CRM, D365 Finance & Ops, Azure, mobile, MFA). Enhance and support multiple systems including Client Portal, Payroll Processing, SharePoint, Data Factory, and Integration Services. Gather and document requirements, participate in usability testing, optimize code for performance and reliability, and troubleshoot issues while collaborating with stakeholders.

Develop and maintain web applications using .NET technologies. Build with .NET MVC and Visual Studio 2010, implement database interaction using ADO.NET and SQL Server (2000-2008), and troubleshoot, optimize, and support application code.

Develop and maintain web applications using .NET technologies. Work with SQL Server 2000-2008, .NET MVC frameworks, and Visual Studio 2010 to implement application functionality and database integration.

Develop, maintain, and support C#/.NET web and desktop applications for clearing and financial-management systems. Work with business users and engineers to analyze requirements, debug and improve performance, implement monitoring, design fixes and integrations, and deliver production-ready deployments and emergency fixes. Contribute to documentation, collaboration, and automation to improve production performance and reliability.

Lead analysis, design, development, testing, implementation and support of global financial .NET applications. Translate user requirements into technical specs, oversee onshore/offshore teams, participate in code reviews, maintain documentation, estimate work, follow SDLC, and support code promotion (TFS).

Design, build, and maintain scalable .NET full-stack applications and services for marketing and consumer web platforms. Lead architecture, prototypes, and deployments; improve performance, reliability, and developer productivity; troubleshoot distributed systems; mentor developers; and participate in CI/CD and AI-assisted development workflows.

The Senior Full Stack Engineer will modernize legacy systems to microservices, maintain .NET applications, optimize SQL databases, and develop frontend interfaces.

Participate in full SDLC to design, develop, test, and deploy DNA and forensics software. Enhance performance, adapt to hardware, perform validation and troubleshooting, support QA, conduct code reviews, estimate effort, mentor engineers, and collaborate across distributed teams.

As a Senior Software Developer, you'll design, build, deploy, and support web applications using the .NET stack and Azure, while collaborating with a team.

Seeking a Senior Software Developer to design, build, deploy, and support web applications using the .NET stack and other technologies in a collaborative team environment.

The role involves full-stack software development, adhering to Agile practices, and collaborating across teams. Responsibilities include coding, testing, and maintaining software systems while mentoring team members.

Design, develop, and maintain enterprise .NET applications; write unit-testable C# code; work with AWS and Kafka; build database stored procedures and SQL; collaborate in Agile/Scrum teams; evaluate emerging technologies and drive cross-team consensus.

Design, build, and maintain scalable web applications and reusable UI components using React or Angular. Develop backend services in C#/.NET or Java, integrate RESTful APIs, optimize performance and security, support CI/CD and deployments, collaborate with Product/QA/Architecture, produce technical design docs and unit tests, and participate in Agile ceremonies.

Design, build, and maintain secure, scalable RESTful .NET APIs (C#, ASP.NET Web API, .NET Framework/.NET Core); implement OAuth/JWT authentication; deploy via CI/CD and Azure API Management; write tests, troubleshoot production issues, modernize legacy services, and collaborate with cross-functional Agile teams using AI-assisted development tools.

Design, develop, modify, and maintain full-stack .NET applications; monitor and test system performance; troubleshoot business systems issues; implement enhancements; produce reports and documentation; ensure compliance, cybersecurity practices, and lead or mentor junior staff.

Designs, develops, modernizes, and maintains enterprise .NET applications and integrations. Provides technical leadership, mentors staff, leads deployments and migrations, ensures security and performance, supports production, and collaborates with stakeholders across development, security, and infrastructure teams.