Back-End and Application Programming Interface Developer

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 currently seeking a talented Back-End and Application Programming Interface Developer.

Do you have experience developing high-performance REST APIs and back-end services using C# and .NET Core?

Let us help you make your next big career move a reality!

What You Will Be Doing:

You will be responsible for the end-to-end development of robust back-end services and enterprise-level APIs. You will work within a microservices architecture to ensure the scalability and security of critical systems while collaborating closely with internal development teams to deliver high-quality software in an agile environment.

Key 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 C#.NET Data structures (Lists, Dictionaries, Hashes) to optimize performance.
• Maintain the 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.

Required Skills & Experience:

• 4–7 years of dedicated back-end development experience.
• Strong proficiency in .NET Core, C#.NET, and API development.
• Proven track record in Data Model design and development.
• Deep understanding of enterprise integration and modern security practices.

Desired Skills & Experience:

• Experience with database optimization and secure data handling.
• Proficiency with Agile delivery tools like Jira or Azure DevOps.
• Relevant certifications such as Microsoft Azure Developer or AWS Developer Associate.
• Knowledge of Oracle Fusion or Oracle Integration Cloud (OIC)

Pay:

$47.60 - $68.00 /hr.

We are interested in every qualified candidate who is eligible to work in the United States. However, we are not able to provide sponsorship at this time or accept candidates who would require a corp-to-corp agreement.

Your better future is ready, and we want to put the right tools in your hands to get you there. Let's go!

Keywords:

Back-End Developer, API Developer, C#, .NET Core, REST API, Microservices, MVC, Data Structures, Oracle Fusion, OIC, Data Modeling, Agile

All offers of employment at Technology Partners are contingent upon clear results of a thorough background check and drug screening that meet corresponding laws and regulations at the city, state and federal level.

Pay ranges are influenced by candidate qualifications, experience, and role specifics, with the actual rate determined considering skills, market conditions, and are subject to change by the employer; pay negotiations follow all state and federal legal guidelines.