Top Senior .NET Developer Jobs

Design, code, and test applications using .NET and SQL Server, develop web applications, create SQL queries, and integrate APIs. Provide technical support and guidance.

The Senior .NET Developer will design, develop, and maintain applications using .NET technologies, conduct performance tuning, and collaborate with team members on software methodologies and architecture.

The Senior .NET Developer modernizes legacy applications and develops new solutions using .NET technologies, focusing on enterprise application support and compliance within agile teams.

Develop and maintain a high-performance image processing system, optimizing algorithms for efficiency, and collaborating with hardware engineers for seamless integration.

Design, develop, and test FileNet eProcess to P8 migration solutions using FileNet Panagon eProcess API, FileNet P8 Process Engine, and Java/J2EE. Coordinate with offshore teams, engage users, and support P8 administration, content and image services.

Design, develop, test, and maintain .NET applications. Implement new features, follow enterprise security and best practices, collaborate with stakeholders, manage bugs and enhancements, mentor junior engineers, produce technical documentation, and support/optimize existing platforms and CI/CD processes.

Senior .NET developer responsible for day-to-day .NET development, collaborating with client architects to design solutions and application architecture, resolving client queries, and delivering SSIS/SSRS-integrated database work with SQL/Oracle.

Senior .NET developer responsible for application development using Microsoft stack (C#, .NET, ASP), LAMP technologies, and multiple RDBMS. Integrate with SaaS platforms (Salesforce, Concur, Coupa, Qualtrics), support production releases, follow change-management and documentation processes, and improve processes while managing multiple tasks in a fast-paced environment.

Develop and maintain web applications using .NET/C# and JavaScript with Oracle or SQL Server backends. Apply object-oriented design, PL/SQL, ASP.NET MVC with Razor, and test-driven development. Support reporting (SSRS) and optionally work with MySQL and Oracle 11g+. On-site presence required; candidate must provide own vehicle.

Lead analysis, design, development, testing, implementation, support and maintenance of medium-to-large web-based systems. Develop web solutions using .NET (ASP, C#), HTML, XML, CSS, JavaScript, and SQL stored procedures, and lead technical/business teams to deliver solutions.

Develop and optimize high-traffic web UI using C#/.NET and front-end technologies. Convert designs to HTML/CSS, implement client-side scripting, integrate REST/WCF services, work in Agile/SCRUM, and use source control.

Senior .NET developer to analyze requirements, design data models and databases, develop, debug, troubleshoot and maintain ASP.NET applications. Work includes enhancing ASP.NET 3.5/MVC3 apps, helping build an MVC4 app with EF Code First, consuming/creating web services, and supporting messaging/interface projects for provider registration and ELR tracking.

Senior full-stack developer responsible for designing, developing, and maintaining .NET/Angular web applications. Tasks include adding features, bug fixes, performance tuning, troubleshooting complex issues, mentoring junior developers, supporting deployments, and ensuring security/compliance. Works in Agile teams, collaborates with architects, and may provide 24x7 production support.

Senior .NET developer to deploy ASP.NET applications to Amazon Web Services, build real-time vessel tracking and reporting views, and work with C#, SQL Server, MVC, Windows Communication/Services, and firmware in an Agile environment. 6-month contract-to-hire based in San Diego.

Contract .NET/Excel-Access developer to migrate and maintain Excel and Access applications: document functional requirements, design solutions, write VBA/macros, develop and test, deploy to test/UAT/production, and transition applications to client staff. Role requires knowledge of .NET/C#, Oracle, TFS and mortgage program compliance.

Lead technical teams to integrate multiple systems, designing and developing UI and middle-tier .NET applications. Responsibilities include team leadership (developers/testers), web service and WCF development, reusable UI modules, requirements management, scope control, issue and risk management, and owning SDLC activities.

Develop and support .NET/C# applications, build SOAP and RESTful web services, work independently in a consulting environment, facilitate meetings, and communicate technical solutions to stakeholders.

Design, develop, and scale cloud-native .NET applications and APIs on Azure. Build front-end pages and backend database objects, produce unit-tested code, implement RESTful and SOAP services, and participate in architecture and code reviews while leveraging automation and AI tools.

Develop, design, and implement .NET applications; analyze requirements; write technical specs; code, test, and debug; lead migrations to production; document processes; mentor junior staff; provide production support and lead project tasks ensuring quality, security, and compliance.

Design and document enterprise .NET solution architectures, assess business needs, produce current/future/transitional architecture models, guide regional teams, support solution delivery, and ensure alignment with enterprise standards for Financial Services projects.

Full‑stack senior .NET developer responsible for 80% hands‑on development, code reviews, mentoring, and 20% testing, deployment, and design. Deliver clean, well‑documented, high‑performance applications using C#, ASP.NET/MVC, SQL Server and UI libraries, integrate with web services, and guide teammates to robust solutions.

Maintain and support web services, Windows services, web applications, SQL databases and stored procedures. Certify environment upgrades, provide production support, and code/test fixes for production issues. Assist with project initiatives and collaborate with distributed teams; midrange/mainframe familiarity helpful.

Develop and maintain .NET applications using C#, ASP.NET MVC, Web API, WCF, and SOA patterns. Build and optimize SQL Server stored procedures, implement LINQ queries, and integrate REST/SOAP services. Implement front-end scripting using JavaScript/jQuery and collaborate with stakeholders; strong communication skills required. 18-month C2C contract.

Develop and maintain full-lifecycle web applications from requirements through implementation, testing, training, and support. Build and improve custom software using ASP.NET, C#, WCF, WPF, Entity Framework, and SQL Server; design databases and implement stored procedures.

Design, develop, test, document, and implement C#/.NET applications per technical specifications. Interpret business requirements, produce architectural and technical documentation, create unit test plans and harnesses, estimate tasks, validate accessibility and secure coding, and collaborate with infrastructure/network/server teams to resolve application issues.