Top Senior .NET Developer Jobs in NYC, NY

Build modern .NET worker services, APIs, T-SQL solutions, and web interfaces replacing legacy COBOL batch systems. Review and validate AI-generated code, implement logging and restartability patterns, support parallel validation and production cutovers, troubleshoot system differences, and improve engineering standards. The role requires production ownership, strong SQL and full-stack development skills, and collaboration with QA and legacy-system specialists.

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.

Senior .NET Software Engineer responsible for end-to-end software development using Microsoft technologies. Requires extensive experience in SDLC, design principles, technical documentation, web application development with .NET, Agile/SCRUM, Entity Framework, database design, and version control. Familiarity with project tools JIRA, TEMPO, Bitbucket, and Confluence preferred.

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.

Senior .NET Web App Developer responsible for designing and building .NET web applications, implementing Oracle PL/SQL solutions, using Entity Framework and Blazor, applying design principles, producing technical documentation, performing performance tuning, and collaborating in Scrum/Agile teams with Bitbucket, JIRA, Tempo, and Confluence.

Leads the design, development, and implementation of full-stack applications using C#, .NET, Angular, Azure, and SQL Server. Collaborates with cross-functional teams, ensures application security, performance, and scalability, applies Git-based version control practices, mentors developers, and stays current with emerging technologies.

As a Sr. Software Engineer at Bloomerang, you will lead technical direction, mentor engineers, and enhance SaaS solutions while utilizing .NET and AI tools. You will ensure scalable, maintainable applications, advocate for Agile workflows, and focus on quality outcomes in software development.

Build and maintain scalable, cloud-native APIs and high-value core system components using .NET and related technologies. Lead software architecture and testing discussions, enhance core offerings, collaborate cross-functionally, and ensure quality through code reviews, unit testing, functional testing, telemetry, and performance tuning. Mentor teammates and contribute to continuous technical and process improvement.

Lead end-to-end development of secure, scalable web applications using .NET, Angular, and related technologies. Responsibilities include designing REST APIs, building responsive interfaces, optimizing SQL Server databases, implementing Entity Framework Core solutions, conducting architecture discussions and code reviews, mentoring developers, troubleshooting, performance tuning, supporting CI/CD, and collaborating with product, QA, DevOps, and business teams in an Agile environment.

Develop and maintain scalable .NET software and platforms for healthcare scheduling and workforce management. Design microservice architectures, apply domain-driven design, and advise on technical decisions. Build automated tests, monitor infrastructure, support CI/CD, and improve reliability and performance. Collaborate with product, data, business, and engineering teams while mentoring developers, documenting systems, participating in Agile ceremonies, and driving technical standards and excellence.

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 of secure, scalable digital banking software across front-end and backend systems. Design Angular or React applications, build APIs, optimize SQL performance, integrate third-party platforms, improve code quality, implement testing strategies, and mentor engineers. Collaborate with cross-functional teams in an Agile environment while supporting cloud-native practices, regulatory compliance, and continuous product improvement.

Owns the design, development, testing, deployment, and maintenance of production software. Builds C#/.NET backend services, Angular web applications, and .NET MAUI mobile apps; optimizes SQL Server databases; resolves production issues; improves reliability, security, performance, and observability; writes tests and documentation; participates in code reviews; and translates ambiguous business needs into maintainable technical solutions.

Lead a development team while remaining hands-on in full-stack engineering. Design, build, test, deploy, and support secure web applications using C#/.NET, Angular, databases, and AWS. Drive cloud migrations, architecture, CI/CD automation, application security, troubleshooting, performance and cost optimization. Mentor developers, establish engineering standards, lead technical delivery, and collaborate with product, data, DevOps, and architecture teams.

Build scalable backend-heavy services and applications using C# and .NET, while contributing to Angular and TypeScript UI development. Design and develop REST APIs and microservices, work with relational databases, implement automated testing and CI/CD, and ensure system security, scalability, and performance. Preferred work includes event-driven architectures, messaging systems, NoSQL databases, caching, search technologies, and mentoring engineers or leading technical initiatives.

Team Lead responsible for leading software projects through all life cycle stages including requirements capture, design, development, and acceptance testing. Requires 7+ years experience.

Nagarro is seeking a Principal Engineer with extensive experience in .Net Web development to provide strategic value and lead initiatives.

The Associate Staff Engineer will leverage their experience in C# and modern web technologies to tackle client challenges and support team growth.

We are looking for a Senior .NET Software Engineer to take ownership of features and drive architectural decisions while building AI-powered EMR software.

Senior full-stack .NET developer responsible for design, development, testing, and rollout of secure, scalable web applications. Work spans front-end (JS/HTML/CSS), middle-tier services (C#, Node.js), and persistence (SQL/NoSQL). Participate in code reviews, architecture, and use modern OOP, SOLID, SOA, and web security practices. Cloud migration (AWS/Azure) and high-availability SaaS experience are valued.

Senior .NET Developer to build the ORCA Compliance System. Design and implement distributed systems, RESTful web/cloud services and Web APIs using ASP.NET/C#, AngularJS, Bootstrap, SQL Server 2012 and MongoDB. Work with AWS and Pivotal products to deliver cloud-based solutions and participate in end-to-end delivery.

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 Software Engineer will drive development of .NET software products, focusing on back-end engineering, code reviews, and collaborating with cross-functional teams.

The Senior .Net Developer will enhance SDG's C#/.NET Core codebase, design high-load services, and optimize MS SQL queries, benefiting from a remote work environment and attractive benefits.