Top Senior .NET Developer Jobs

Analyze technical requirements, write, test, and document .NET application code; work with end users; resolve system issues; ensure compliance with development standards and SDLC processes.

Senior full-stack developer responsible for end-to-end web development using ASP.NET and AngularJS. Must write strong C# code, solve complex problems, and deliver E2E web solutions.

Develop, test, document, and maintain .NET web applications. Collaborate with end users, resolve system issues, follow SDLC standards, and perform UI, middle-tier, and integration testing using .NET 4.5, ASP.NET MVC, and JavaScript.

Develop Windows payment applications and SDKs for payment card readers supporting EMV, magnetic stripe and NFC. Build/test SDKs, write documentation, support client integrations, follow Windows app best practices, apply OOP/design patterns, and unit test for reliability.

Design, develop, test, and deploy .NET solutions (APIs and web apps). Build and consume RESTful services, work with SQL and NoSQL databases, use cloud (Azure/AWS) and Docker, apply unit/integration/performance testing, participate in code reviews, define features via spikes, and architect scalable, high-performance systems. Support occasional after-hours and on-call rotation.

Lead the development and maintenance of distributed identity and compliance framework, focusing on high-quality software solutions for financial services.

As a Staff Software Engineer for Liquidity Management, you'll lead architectural decisions, mentor engineers, and drive platform development, focusing on scalable, reliable systems for treasury management in a fast-paced environment.

Senior .NET engineer to design and build web applications and RESTful APIs using ASP.NET (MVC/Web API) and .NET Core. Responsibilities include front-end work (HTML5/CSS3/JavaScript), database design and SQL development, participating in complex scalable project design, using Git, and writing unit/integration/functional tests.

Hands-on lead developer/technical architect responsible for coding (.NET Core/.NET 8+), designing Azure-first architectures, building microservices and APIs, implementing Azure PaaS services and monitoring, performing code reviews and mentoring, troubleshooting production issues, and coordinating delivery with onshore/offshore teams.

Maintain and modernize a stable .NET/SQL Server platform while leading migration from monoliths to cloud-native microservices. Design APIs and event-driven patterns, containerize deployments, optimize backend .NET apps and SQL performance, and build responsive frontends integrated with microservices. Collaborate across cross-functional teams to ensure scalable, highly available systems.

Develop and support high volume web applications using .NET technologies, collaborating with business teams and addressing production issues as needed.

The .Net MVC Developer designs, develops, and modifies websites, ensuring technical excellence in coding, testing, and debugging, while also managing project timelines and collaborating with development teams.

The role involves leading the production support of database systems, resolving complex technical issues, collaborating with teams, and optimizing database performance.

Develop and maintain web applications using .NET technologies. Collaborate on design patterns, web services, and front-end development with a focus on security and performance.

Design, develop, and maintain web applications using C#, .NET, AngularJS, TypeScript and Node.js. Collaborate with customers and team to define requirements, ensure performance and quality, fix bugs, participate in code reviews, and maintain code quality within an Agile environment.

Design and develop scalable services/APIs using C#/.NET/.NET Core, collaborate during SDLC, mentor junior engineers, and ensure code quality.

Design, build, and maintain scalable web applications for payroll and accounting. Collaborate with engineers and product partners, write tested code, participate in code reviews, contribute to architecture, improve CI/CD and monitoring, support production (including on-call), and communicate progress while continuously learning.

Maintain and enhance legacy .NET/C# systems, stabilize development and production environments, design data movement and ETL solutions, analyze COBOL/mainframe components, support integration and deployment, collaborate with federal staff and vendors, and document knowledge transfer while evaluating modern tools for improved data processing.

Design, build, and maintain large-scale, distributed API-driven systems using C#/.NET and SQL. Integrate AI (LLMs, agents, prompt engineering) to improve customer experience, observability, automation, and data quality. Lead design, code reviews, telemetry-driven diagnostics, and collaborate with Product, Research, and Data teams to deliver AI-powered platform capabilities.

Develop and maintain web applications for Technical Operations, utilizing a full stack including .NET and Angular within an Agile environment.

Build an enterprise-level Sitefinity website and its ecosystem including front/back-end integration, deployment, transactional functions, contract management, and Azure-based infrastructure. Serve as senior front-end developer and technical lead for extensibility and future add-ons.

Design, develop, test, document, and maintain .NET web applications in a team environment. Mentor junior developers, assist project planning and timelines, evaluate emerging technologies, and manage/assign work via a ticket tracking system.

Full-stack .NET developer building and maintaining SaaS-based single-page applications. Responsibilities include developing SPA clients, web services, SQL integrations, automated tests (BDD/TDD), optimizing TypeScript/HTML/CSS, troubleshooting production issues, and supporting operations and service delivery.

Lead development of client websites and new application components using the Microsoft stack. Create technical specifications, oversee testing and deployment, manage production issues, prioritize maintenance, and ensure operational effectiveness across front-end and back-end systems.

Design, code, test and deploy .NET applications (about 50% hands-on). Provide strategic technical guidance, define team patterns and practices, ensure adoption of technologies, and mentor the team while staying current with tools and methodologies.