HE - Lead Backend Developer - New API pods - Job4291

Summary

We are seeking a skilled Backend Developer to lead the modernization of our legacy SOAP/WCF APIs to modern REST-based services. This role involves architecting and developing scalable .NET Core solutions while maintaining backward compatibility with existing systems.

Responsibilities

• API Modernization & Development

  • Lead the migration of legacy SOAP and WCF services to REST APIs using .NET Core
  • Design and implement REST adapter layers to translate between modern REST endpoints and legacy WCF/SOAP services
  • Develop comprehensive OpenAPI specifications for all new REST services
  • Build robust file-based interface translation mechanisms
  • Ensure seamless integration with existing Supply Chain Management (SCM) systems

• Team Lead Qualities

  • Experience leading development teams. Ideally, API projects.
  • Team-oriented with a team perspective - able to supervise other developer’s work, help who is struggling and escalate issues when needed.
  • Work on administrative tasks, such as documentation.

• Architecture & Design

  • Architect scalable microservices using .NET Core and RESTful principles
  • Design and implement authentication and authorization using OAuth 2.0 and MFA
  • Build secure access token propagation mechanisms across services
  • Create adapter patterns to bridge modern REST clients with legacy backend systems
  • Establish clear API versioning and deprecation strategies

• Integration & Collaboration

  • Coordinate with Presidio IVR systems for seamless integration
  • Work closely with internal teams already familiar with OAuth implementations
  • Support integration testing efforts across multiple system boundaries
  • Collaborate with DevOps team for smooth CI/CD pipeline integration

Requirements

• *Core Technologies

  • 7+ years of experience with C# and .NET Framework/.NET Core
  • Strong expertise in RESTful API design and implementation
  • Deep understanding of SOAP and WCF services architecture
  • Experience with OpenAPI/Swagger specification development
  • Proficiency in Entity Framework Core or similar ORM technologies

• Security & Authentication

  • Hands-on experience with OAuth 2.0 and OpenID Connect
  • Implementation of Multi-Factor Authentication (MFA) systems
  • Knowledge of JWT tokens and secure token propagation
  • Understanding of API security best practices and transit security

• System Integration

  • Experience with legacy system modernization projects
  • Knowledge of adapter pattern implementation
  • File-based interface development and translation
  • IVR system integration experience (Presidio preferred)
  • Understanding of enterprise integration patterns

• Preferred Qualifications

  • Bachelor's degree in Computer Science or related field
  • Experience with cloud platforms (Azure)
  • Knowledge of containerization technologies (Docker, Kubernetes)
  • Familiarity with message queuing systems (RabbitMQ, Azure Service Bus)
  • Experience with API gateway solutions
  • Experience with Finance