Top Senior .NET Developer Jobs

Designs, develops, tests, debugs, and deploys software solutions. Produces technical documentation, proposes solutions for complex business needs, and maintains applications while collaborating on release and lifecycle processes.

Design, build, and maintain cloud-native .NET microservices on Azure/AKS. Implement Istio service mesh, containerization (Docker), and observability. Troubleshoot distributed systems, optimize performance, and support enterprise Treasury applications in an Agile/Scrum environment.

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.

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 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.

Design, build, and maintain custom ASP.NET WebForms pages, console apps, and SSRS 2008 reports. Troubleshoot custom development, manage branch merges and CI (Perforce, TeamCity, Octopus, GitHub), document features, moderate API/SSO forum, and support PHP SDK. Engage directly with customers in pre- and post-sales activities.

Design and build enterprise full-stack eCommerce solutions, architect scalable service layers, collaborate with QA and Ops, evaluate and extend procured code, research technologies, and promote DevOps and testing best practices in an Agile environment.

Rewrite a legacy application into a modern enterprise web app, designing architecture and selecting technologies. Build AngularJS front-end, integrate with RESTful APIs and .NET back end (C#, Entity Framework/NHibernate), apply OOP, TDD, CI, refactoring, and testing (Mocha/Jasmine and NUnit/Microsoft Test). Collaborate with team and potentially consult with stakeholders.

Lead full‑stack developer responsible for designing and building backend APIs in C# (.NET Core/.NET 8) and Angular 8+ frontends. Implement unit testing, CI/CD (YAML) in Azure/Azure DevOps and GitHub, use Docker/Kubernetes, integrate CMS and third‑party systems, ensure code quality (SonarQube, test automation), and troubleshoot production issues.

Lead C# .NET Backend Developer to architect, build, and maintain scalable microservices and RESTful APIs using .NET Core. Drive CI/CD, containerization (Docker), Kubernetes orchestration, and Azure deployments. Mentor developers, ensure code quality and security, collaborate with QA and product teams, and champion agile practices.

The .NET Developer will provide support for new applications and enhancements, implement applications, design specifications, and perform testing in an Agile environment.

The Senior Full Stack .NET Engineer designs and maintains software systems, manages API integrations, and works closely with cross-functional teams to improve internal platforms and resolve production issues.

As a Senior Full-Stack Software Engineer at Ripple, you'll design and deliver cloud-native solutions using Azure and .NET, mentor engineers, and ensure high-quality software delivery while managing full-stack applications.

As a Staff Software Developer, you'll build full-stack, cloud-native solutions on Azure, own delivery pipelines, ensure software quality, and mentor engineers while linking modern tech with financial organizations.

Design, develop, and maintain enterprise .NET applications; lead application architecture, back-end development, integration, deployment, and performance optimization. Assess and improve technical infrastructure, troubleshoot issues, produce technical documentation and system roadmaps, and collaborate with stakeholders to ensure solutions meet business and technical requirements.

Design, develop, and maintain Microsoft-stack solutions including web apps, RESTful APIs, front-end interfaces, database schemas, Power Automate workflows, and Power BI reports. Collaborate with analysts and teams, write tests, optimize performance, troubleshoot issues, and support Power Platform components like Dataverse and Canvas Apps.

Develop and maintain application software (primarily .NET and Java), support users daily, review and improve others' code, produce documentation, and work with web technologies, system interfaces, testing methodologies, and basic database administration to support Air Force and DoD programs.

Lead design, development, testing, debugging, integration, and documentation of Microsoft-stack applications. Mentor team members, manage vendor integrations, lead cross-functional projects, and provide technical leadership on architecture, roadmaps, and best practices.

Design and build scalable enterprise applications in C#/.NET (APIs, microservices) and integrate AI capabilities (Python, LLMs, RAG, vector DBs, agentic frameworks). Own CI/CD, Azure DevOps workflows, containerized deployments, and collaborate across teams to deliver AI-enabled operational automation and agent integrations.

Senior full‑stack engineer to build and support production React component libraries (TypeScript, strict mode) and .NET Core Web APIs. Implement AWS serverless services (Lambda, API Gateway, DynamoDB) using IaC (CDK/Terraform/SAM), maintain high test coverage, perform feature‑flagged rollouts and rollbacks, integrate embedded analytics with auth and row‑level security, publish versioned internal packages, and produce handoff documentation for ownership after engagement.

Develop and maintain web-based applications using .NET/C#, JavaScript, HTML/CSS, SQL and Oracle/SQL Server. Perform root cause analysis, collaborate with teams for requirements, follow Agile SDLC, present change demonstrations, and use Azure DevOps/Jira for lifecycle management. Implement and maintain Blazor components.

Lead design and delivery of scalable, reliable software using C#/.NET, SQL Server, React, and Azure. Own complex initiatives from design through operations, mentor engineers, improve CI/CD, observability, and apply DDD/TDD/VSA practices. Use modern APIs, microservices or modular monoliths, and AI-assisted tooling to improve delivery.

Senior C#/.NET developer role to design and implement enterprise-level, scalable microservices using AWS. Work with MS SQL/PostgreSQL and React.js, mentor developers, overlap multiple time zones, and grow into technical leadership in a fully remote environment.