Top Remote .NET Developer Jobs in Philadelphia, PA

Full‑stack .NET developer responsible for writing, maintaining and optimizing code, designing APIs and system architecture, implementing unit/integration tests, supporting deployments, troubleshooting performance issues, and collaborating with QA and stakeholders. May work variable hours including nights/weekends.

Lead design, development, and maintenance of scalable .NET web and Windows applications. Build RESTful APIs, integrate front-end frameworks, collaborate with cross-functional teams, drive architectural decisions, perform code reviews and testing, and support deployments and backlog reduction for the eApp portfolio.

Lead and mentor an engineering team building GovIntel and GovChannel product capabilities. Own technical direction, design and deliver scalable SaaS features, APIs, integrations, and platform reliability. Partner with Product, QA, Cloud Ops, and stakeholders to prioritize work, drive CI/CD and observability practices, lead reviews and incident response, and apply AI-assisted tools to improve development speed and quality.

As a Software Engineer, you will design, develop, and deliver high-quality software, contribute to code reviews, monitor application performance, and ensure maintainability and consistency across products.

Seeking a Senior Full Stack .NET Developer to work on a social good project, with strong skills in C#, AngularJS, design, and UX. Requires 5+ years of experience.

The Staff Engineer will leverage 5+ years of experience in C#, JavaScript, and frameworks to lead and innovate solutions in a collaborative environment.

Own production reliability for customer-facing radar and weather data services across Azure, colocation, and edge Kubernetes. Refactor C#/.NET services for multi-replica safety, design multi-cluster HA, operate self-managed Kubernetes, improve observability and automation, lead incident response and postmortems, and drive operational excellence and capacity planning.

As a Principal .NET Software Engineer at Versapay, you will modernize payments infrastructure, improve scalability, design distributed services, and take ownership of payment workflows while collaborating with various teams to enhance customer experience.

Develop, migrate, and maintain .NET applications using Agile methods; implement Okta authentication from ADFS; perform API and application testing; create migration, implementation, and test documentation; use DevOps toolchain to build, deploy, and support secure applications while coordinating with customers and project teams.

The .NET Developer will design, develop, and enhance web-based applications, maintain ERP solutions, and collaborate with cross-functional teams to support software throughout its lifecycle.

Design, develop, test, and deploy .NET applications using C# and ASP.NET MVC. Create and optimize SQL databases and APIs, perform code reviews and debugging, collaborate with stakeholders and architects, deploy to staging/production, maintain applications, and stay current with .NET best practices.

The Back End Software Engineer will design and build scalable services for a SaaS platform, collaborate with teams, and contribute to quality code and architecture discussions.

Lead a team to develop SaaS solutions while coding and mentoring engineers. Responsible for technical leadership and team management.

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 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.

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 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 customer-facing architecture and development of scalable, cloud-native AWS applications. Drive design discussions, migrate monoliths to microservices, implement serverless and container solutions, advise on AWS best practices, and influence developer-focused product and platform strategy.

Lead technical engagements to architect and build scalable, cloud-native AWS applications using serverless, containers, and microservices. Migrate monoliths to microservices, advise on AWS best practices, influence infrastructure and product strategy, and work directly with customers and cross-functional teams.

The Integration Developer supports and maintains Rhapsody and .NET applications, automates workflows, and modernizes legacy systems for public health data exchange.

Hands-on technical lead responsible for migrating a legacy VB.NET Web Forms system to ASP.NET Core, owning architecture, releases, security hardening, CI/CD, and mentoring an engineering team. Drive phased migration, coordinate cross-team dependencies, improve DevOps pipelines, enforce secure SDLC, and actively contribute to development and code reviews.

We are looking for a motivated .NET Developer to build scalable applications, collaborating with teams to design, develop, and maintain software.

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

The Senior .NET Developer will work on developing and maintaining applications, mentor junior developers, and ensure compliance with regulations. The role requires expertise in full-stack development, particularly with SQL Server databases and Azure.

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.