Top .NET Developer Jobs in Philadelphia, PA

Seeking a Senior .NET Developer with experience in Sitecore CMS and financial systems integration. Must have strong software development skills and experience with Agile methodologies.

The .Net Developer will work in agile teams, handling software development tasks including design, testing, and deployment while supporting existing applications.

The .NET FullStack Developer will design, code, test, and debug software product enhancements while ensuring high performance and maintainability, working closely with various teams.

Lead design, implementation, and maintenance of the CoverGo SaaS platform across front-end and back-end. Provide technical direction, optimize performance and security, enforce coding standards, conduct code reviews, mentor junior developers, and collaborate with product and design teams to build scalable, high-traffic insurance enterprise solutions.

Lead the architecture and delivery of scalable full-stack web applications using React and .NET/C#. Design cloud solutions on AWS, establish frontend standards, conduct code reviews, mentor developers, evaluate technologies, and collaborate with product, UX, QA, and DevOps teams. Own the software development lifecycle while promoting automated testing, CI/CD, cloud-ready architecture, and effective AI tool adoption.

The role involves converting visual designs into web pages, collaborating with teams, and ensuring compliance with best practices for front-end development.

Develop, maintain, and modernize secure, scalable web applications using C#, ASP.NET Core, MVC, Razor Pages, and Web API. Implement secure coding (HIPAA/OWASP), optimized SQL Server database work, audit logging, and integrations. Collaborate with stakeholders, use Azure DevOps/Git for CI/CD and work tracking, and support migrations to cloud-enabled architectures.

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.

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.

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.

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).

Develop and maintain .NET applications using C# and ASP.NET. Support legacy VB Classic code. Work with SSIS and SQL Server for data integration. Maintain Windows Server environments, have basic Unix familiarity, and communicate with business users to gather requirements.

Develop and maintain .NET applications using C# and ASP.NET. Work with SQL Server and SSIS for data integration. Support legacy VB (Classic) code, manage Windows Server environments, and liaise with business users. Basic Unix familiarity required.

Design, develop, and maintain scalable .NET backend services, responsive React applications, SQL Server data solutions, RESTful APIs, and microservices. Collaborate with architects, product managers, and QA teams; participate in code reviews and architectural decisions; troubleshoot and optimize applications; and ensure security, scalability, and maintainability. The role also contributes to continuous improvement and may involve cloud platforms, CI/CD, containerization, and Agile development.

Design, develop, and maintain scalable full-stack enterprise applications using C#, .NET, ASP.NET, and Microsoft Azure. Build RESTful APIs and cloud services, modernize existing systems, troubleshoot production issues, and collaborate with technical and business stakeholders. Participate in architecture, code reviews, testing, deployment, and production support while following secure and maintainable development practices.

Develop modern applications using .NET/.NET Core with Database/SQL and Azure. Work remotely, troubleshoot proactively, and contribute to a distributed digital-nomad developer community.

Remote junior .NET developer to design, build, integrate, deploy, and provide production support for web applications serving housing programs. Responsibilities include data/business analysis, developing reports, QA testing, writing documentation and user guides, gathering requirements, creating mock-ups, and configuring application deployments.

The C# / .NET Developer will design and maintain middleware applications, build Shopify integrations, and support a mobile app backend in a remote work environment.

Develop and maintain InfoTrack's cloud-based web solution: build backend C#/.NET services, integrate third-party SOAP/REST APIs, design databases, implement full-stack features (React/JS), follow microservices patterns, write tests, collaborate in Agile teams, and recommend product and usability improvements.

Develop and architect scalable cloud-based software for an IoT asset-tracking platform. Responsibilities include translating business requirements into technical designs, leading complex feature development, mentoring engineers, conducting code reviews, promoting engineering best practices, evaluating distributed-system trade-offs, and collaborating with product, operations, and customer success teams.

Lead hands-on architecture and development for a cloud-based IoT asset-tracking platform. Design scalable distributed systems, APIs, data models, and platform components; resolve complex performance and reliability challenges; and champion testing, CI/CD, observability, and security practices. Lead an agile engineering team, manage delivery, mentor and hire engineers, collaborate with Product and Operations, and drive adoption of AI development tools and AI/ML capabilities.

Build and maintain scalable, cloud-native APIs using .NET. Enhance core platform components, lead architecture and testing discussions, optimize telemetry and performance, collaborate cross-functionally, conduct code reviews, and mentor team members.

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.

As a Senior Software Engineer at PerfectServe, you'll design, build, and maintain high-quality code for healthcare communication systems, mentoring junior engineers and collaborating across teams to improve patient care and clinical workflows.