Senior Back-End & API Engineer - C#/.NET Core

TECHNOLOGY PARTNERS INC; St. Louis (MO); On-site; USD 65,000 - 94,000; Full time

Job summary

Technology Partners is seeking a Back-End and API Developer in Missouri to build high‑performance REST APIs and backend services using C# and .NET Core. You will work within a microservices architecture to ensure scalability and security, collaborating with internal teams to deliver enterprise software in an agile environment.

Oracle Fusion/OIC integration experience is a plus. This role offers a competitive hourly rate and the chance to contribute to critical systems for major clients in the

Qualifications

• 4–7 years of back-end development experience.
• Strong proficiency in .NET Core, C#.NET, and API development.
• Data model design and development expertise.
• Deep understanding of enterprise integration and security practices.

Responsibilities

• Develop and maintain back-end services and REST APIs using C# and .NET Core.
• Implement and manage MVC and microservice architectural patterns.
• Utilize expertise in data structures to optimize performance.
• Maintain scalability, performance, and security of all developed APIs.
• Collaborate with internal API developers and participate in agile development methodologies.
• Integrate solutions with Oracle Fusion/OIC and other enterprise systems.

Skills

C#

NET Core

API development

Data modeling

Enterprise integration

Security best practices

Tools

Jira

Azure DevOps

Oracle Fusion

Oracle Integration Cloud

Job description

Technology Partners is seeking a Back-End and API Developer in Missouri to build high‑performance REST APIs and backend services using C# and .NET Core. You will work within a microservices architecture to ensure scalability and security, collaborating with internal teams to deliver enterprise software in an agile environment.

Oracle Fusion/OIC integration experience is a plus. This role offers a competitive hourly rate and the chance to contribute to critical systems for major clients in the