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
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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
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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.
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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
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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
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*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
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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
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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
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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