Remote Lead .NET Developer: Modernization & API Leader

Eliassen Group; Santa Fe (NM); Remote; USD 96,000 - 107,000; Part time

Job summary

Eliassen Group is seeking a Remote Lead .NET Developer for a contract-to-hire engagement focused on modernizing large-scale enterprise systems. The role emphasizes hands-on backend work, API development, and guiding architectural decisions to move away from legacy mainframes toward modern, event-driven services.

You will lead backend design and implementation, mentor developers, and collaborate with teams to translate complex business logic into scalable .NET solutions and Kafka-driven

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 Apicurio or similar tools for schema design.
• 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 the 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

Schema design

System integrations

Technical leadership

Tools

Apicurio

Job description

Eliassen Group is seeking a Remote Lead .NET Developer for a contract-to-hire engagement focused on modernizing large-scale enterprise systems. The role emphasizes hands-on backend work, API development, and guiding architectural decisions to move away from legacy mainframes toward modern, event-driven services.

You will lead backend design and implementation, mentor developers, and collaborate with teams to translate complex business logic into scalable .NET solutions and Kafka-driven