Tri-Force Consulting Services, Inc. - Senior .NET Full Stack Developer – API Integration

Full Stack Developer is needed in Philadelphia, United States.

Client: Tri-Force Consulting Services, Inc.

Location: Philadelphia, PA, us

Contract: Contract

Job Description

Tri-Force Consulting Services is seeking a Senior Full Stack .NET Developer / API Integration Developer to support backend application development, REST API development, business logic, and integration with enterprise systems. The successful candidate will work closely with backend, mobile, QA, and cloud engineers in an Agile environment.

Responsibilities

• Develop backend services using C# and ASP.NET Core.

• Design and develop RESTful APIs.

• Build JSON/OpenAPI-based API contracts.

• Implement application business logic and workflows.

• Develop integrations with external and enterprise systems.

• Implement data access and database functionality.

• Work with PostgreSQL and SQL databases.

• Implement authentication and authorization.

• Develop validation, error handling, logging, and retry mechanisms.

• Support mobile application API integration.

• Write unit and integration tests.

• Participate in peer code reviews.

• Troubleshoot production and integration issues.

• Support Azure deployment and CI/CD processes.

Required Skills

• 5+ years of software development experience.

• Strong C# and ASP.NET Core/.NET.

• Strong REST API development.

• JSON / OpenAPI / Swagger.

• SQL.

• PostgreSQL or equivalent relational database.

• Enterprise/API integration experience.

• OAuth 2.0 / JWT or equivalent authentication technologies.

• Unit and integration testing.

• Git.

• Agile/Scrum development.

Preferred Skills

• Microsoft Azure.

• Azure API Management.

• Azure App Service.

• Azure DevOps.

• OAuth 2.0 / OpenID Connect.

• Microservices.

• Third-party API integrations.

• GIS/location/address APIs.

• Mobile application backend development.

• Government/public-sector systems.

Additional Information

Job Type: Contract – 2 to 3 Months

Location: Philadelphia, PA / Hybrid or Remote

About Us: Since 2000, Tri-Force Consulting Services (https://triforce-inc.com) has been an MBE/SDB certified IT Consulting firm in the Philadelphia region. Tri-Force specializes in IT staffing, software development (web and mobile apps), systems integration, data analytics, system automation, cybersecurity, and cloud technology solutions for government and commercial clients. Tri-Force works with clients to overcome obstacles such as increasing productivity, increasing efficiencies through automation, and lowering costs. Our clients benefit from our three distinguishing core values: integrity, diligence, and technological excellence. Tri-Force is a six-time winner among the fastest-growing companies in Philadelphia and a four-time winner on the Inc. 5000 list of the nation’s fastest-growing companies.