Backend API Developer (C# and .NET Core)

Job Category: API Developer Backend

Job Type: Remote

Job Location: Missouri St. Louis

Compensation: Depends on Experience

W2: W2-Contract Only; Kindly note that applications on a C2C basis will not be considered for this role.

C2C: Contract - W2

Job Description

Visa Requirement:

We are considering candidates who are authorized to work in the United States under the following visa categories only: H4-EAD, GC Holder, GC-EAD, or U.S. Citizen (USC).

Job Description:

We are seeking an experienced Back-End and API Developer with strong expertise in C# and .NET Core to design, develop, and maintain scalable back-end services and RESTful APIs. The ideal candidate will have hands-on experience with modern architectural patterns, enterprise integrations, and Agile development practices.

Key Responsibilities:

Design, develop, and maintain robust back-end services and REST APIs using C# and .NET Core

Implement MVC and microservices architectures

Ensure API performance, scalability, reliability, and security

Collaborate with internal API developers and cross-functional teams

Apply best practices in data structures (Lists, Dictionaries, Hash tables) using C#

Integrate back-end systems with Oracle Fusion, OIC, and other enterprise platforms (as applicable)

Participate in Agile/Scrum ceremonies and support iterative development and delivery

Required Skills & Qualifications:

10+ years of overall experience in back-end application development

Strong hands-on expertise in .NET Core, C#.NET, and RESTful API development

Solid understanding of data modeling and database design

Experience with enterprise integration and security best practices

Strong problem-solving and communication skills

Preferred Skills / Certifications:

Experience with database performance tuning and secure data handling

Familiarity with Agile tools such as Jira or Azure DevOps

Relevant certifications such as: (Microsoft Azure Developer, AWS Developer Associate)

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JPS-5251 / Back-End and Application Programming Interface (API) Developer

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