Remote .NET Backend Developer – Modernization & APIs

Eliassen Group; Topeka (KS); Remote; USD 90,000 - 103,000; Part time

Job summary

Eliassen Group in the United States seeks an experienced .NET Developer for a large modernization initiative. The role focuses on backend services, REST APIs, and enterprise integrations within a remote, contract-to-hire engagement.

You will replace legacy mainframe functionality with modern .NET-based solutions, work on event-driven architectures, and collaborate with cross-functional teams. W2 benefits are provided; conversion to FTE after the contract is typical.

Qualifications

• Strong hands-on experience with .NET/C# development.
• Experience developing REST APIs and backend services.
• Experience with enterprise application development.
• Experience with integrations across multiple systems.
• Mid-level to senior development experience.
• Interest in AI/LLM is a plus.

Responsibilities

• Design and develop backend services and REST APIs using modern .NET.
• Build replacement services as part of a legacy mainframe modernization effort.
• Review existing mainframe code to understand business logic and reference when developing new solutions.
• Develop event-driven services, consumers, and publishers.
• Build and support integrations with enterprise and third-party applications.
• Contribute to finance-related services, APIs, payroll workflows, and data integrations.
• Collaborate with engineering teams on the modernization of critical enterprise applications.

Skills

.NET/C# development

REST API development

Enterprise apps

Event-driven design

System integrations

Tools

Kafka

Apicurio

Job description

Eliassen Group in the United States seeks an experienced .NET Developer for a large modernization initiative. The role focuses on backend services, REST APIs, and enterprise integrations within a remote, contract-to-hire engagement.

You will replace legacy mainframe functionality with modern .NET-based solutions, work on event-driven architectures, and collaborate with cross-functional teams. W2 benefits are provided; conversion to FTE after the contract is typical.