Tri-Force Consulting Services Inc
Tri-Force Consulting Services IncVerified Source

Senior .NET Full Stack Developer (API Integration)

Onsite · Philadelphia, Pennsylvania
Posted August 13, 2026
full-time

Overview

You will own backend application development, REST API development, and integration with enterprise systems at Tri-Force Consulting Services Inc. In this 2-3 month contract, you will build business logic and connect APIs for a Philadelphia, PA client, collaborating closely with backend, mobile, QA, and cloud engineers in a hybrid or remote setup. You will drive integration architecture and deliver robust solutions from day one, working directly with enterprise data systems.

What You'll Do6

  • 1Build REST APIs using .NET Core and C#, integrating with enterprise systems.
  • 2Design business logic layers for backend microservices, using ASP.NET Web API.
  • 3Ship API integrations with third-party platforms via RESTful protocols and OAuth.
  • 4Debug and enhance existing backend services, focusing on performance and reliability.
  • 5Collaborate with mobile and QA engineers to align API contracts and test coverage.
  • 6Own the full API lifecycle from design to deployment, using Azure DevOps pipelines.

Requirements7

  • 15+ years in full stack development, with .NET and C# expertise.
  • 2Hands-on experience with REST API development, including OpenAPI specs.
  • 3Strong proficiency in SQL and data modeling, including Entity Framework.
  • 4Experience integrating enterprise systems via OAuth, JWT, and API gateways.
  • 5Familiarity with front-end technologies like Angular or React.
  • 6Agile development experience, working in sprints and using Scrum.
  • 7Ability to work in a hybrid or remote environment with Philadelphia, PA time zone overlap.

Salary Insight

Salary not disclosed in listing

Location

Typeonsite
LocationPhiladelphia, Pennsylvania

Required Skills

.netc#rest apiazure devopssql
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