Remote Lead .NET Architect for Modernization & APIs

Eliassen Group; Dover (DE); Remote; USD 96,000 - 107,000; Full time

Job summary

The Eliassen Group is seeking a Lead .NET Developer for a contract-to-hire engagement. This remote role focuses on modernizing legacy mainframe applications into .NET services and REST APIs, with emphasis on back-end leadership and architecture guidance.

You will guide design decisions, mentor developers, and collaborate with engineering teams to deliver event-driven solutions and enterprise integrations across platforms. Rate: $70-78/hr.

Qualifications

• Strong hands-on .NET/C# development experience.
• Advanced experience building REST APIs and backend services.
• Strong experience with Kafka & event-driven architecture.
• Experience with schema design tools such as Apicurio.
• Strong enterprise application development background.
• Experience designing integrations across multiple systems.
• Experience building and supporting production-grade applications.
• Ability to analyze legacy applications and translate business logic into modern services.
• Experience providing technical leadership, architecture guidance, or mentoring.

Responsibilities

• Lead the design and development of backend services and REST APIs using .NET/C#.
• Help drive modernization of legacy mainframe applications into modern .NET services.
• Translate existing 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 help 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

Event-driven

Leadership

Enterprise apps

System integrations

Production apps

Legacy modernization

Tools

Apicurio

Job description

The Eliassen Group is seeking a Lead .NET Developer for a contract-to-hire engagement. This remote role focuses on modernizing legacy mainframe applications into .NET services and REST APIs, with emphasis on back-end leadership and architecture guidance.

You will guide design decisions, mentor developers, and collaborate with engineering teams to deliver event-driven solutions and enterprise integrations across platforms. Rate: $70-78/hr.