Remote Lead .NET Developer - Modernization

Eliassen Group; Salt Lake City (UT); Remote; USD 96,000 - 107,000; Full time

Job summary

Eliassen Group is seeking a Lead .NET Developer to drive a large-scale modernization initiative, replacing legacy mainframe applications with modern .NET services and APIs. This is a hands-on technical leadership role focused on backend development and setting architectural direction. You will guide transitions to event-driven architectures, design scalable services, and mentor engineers.

The role is remote with contract-to-hire terms and a W2 hourly rate. Candidates located in the U.S.

Qualifications

• Hands-on .NET/C# development with backend focus.
• Experience building REST APIs and backend services.
• Experience with Kafka and event-driven architecture.
• Experience designing enterprise integrations.
• Ability to translate legacy mainframe logic to modern services.
• Strong leadership or mentoring experience.

Responsibilities

• Lead the design and development of backend services and REST APIs using .NET/C#.
• Modernize legacy mainframe applications into modern .NET services.
• Translate mainframe business logic into scalable, maintainable solutions.
• Design and build event-driven services, consumers, and publishers.
• Lead integrations across internal and third-party enterprise platforms.
• Provide technical guidance and establish development best practices.
• Partner with engineering teams on architecture, design decisions, and implementation.
• Support finance, payroll, data, and other business-critical integrations.
• Mentor developers and provide technical direction throughout modernization efforts.

Skills

.NET/C#

REST APIs

Kafka

Apicurio

Enterprise apps

System integration

Production-grade apps

Legacy modernization

Technical leadership

Tools

Apicurio

Job description

Eliassen Group is seeking a Lead .NET Developer to drive a large-scale modernization initiative, replacing legacy mainframe applications with modern .NET services and APIs. This is a hands-on technical leadership role focused on backend development and setting architectural direction. You will guide transitions to event-driven architectures, design scalable services, and mentor engineers.

The role is remote with contract-to-hire terms and a W2 hourly rate. Candidates located in the U.S.