Lead Backend Developer

Summary

We are seeking a highly skilled and experienced Lead Backend Developer to play a pivotal role in modernizing our legacy Supply Chain Management systems. This role focuses on transforming existing SOAP and Windows Communication Foundation (WCF) APIs into modern, scalable REST-based microservices using .NET Core. The ideal candidate will be instrumental in designing and implementing secure, efficient backend services, developing REST adapter layers, and ensuring seamless integration with existing systems. This position requires a strong technical leader who can collaborate effectively with cross-functional teams, including DevOps, to deliver robust solutions that support our business goals.

Responsibilities

• Lead the modernization effort by migrating legacy SOAP and WCF APIs to RESTful services using .NET Core, ensuring high performance, scalability, and maintainability.
• Design and implement scalable microservices architectures that integrate seamlessly with existing Supply Chain Management systems.
• Develop REST adapter layers to facilitate smooth communication between legacy systems and new services.
• Architect and implement secure authentication and authorization mechanisms using OAuth 2.0, OpenID Connect, Multi-Factor Authentication (MFA), and JSON Web Tokens (JWT).
• Create and maintain comprehensive OpenAPI (Swagger) specifications to document APIs clearly and facilitate collaboration.
• Apply the Adapter design pattern and develop file-based interfaces to support legacy system integration and IVR system connectivity.
• Collaborate closely with internal development teams, QA, and DevOps to ensure smooth CI/CD pipeline integration and automated deployments.
• Participate in code reviews, mentor junior developers, and promote best practices in backend development and security.
• Troubleshoot and resolve complex technical issues related to backend services and integrations.
• Stay current with emerging technologies and industry trends to continuously improve backend architecture and development processes.

Requirements

• Must-Have Skills
• C# : Expert-level proficiency in C# programming language, with extensive experience in backend development.
• .NET Framework & .NET Core: Deep knowledge of both .NET Framework and .NET Core platforms, with a focus on building and migrating enterprise-grade backend services.
• Microservices: Architect scalable microservices using .NET Core and RESTful principles.
• RESTful API Design: Proven experience designing and implementing RESTful APIs that are scalable, secure, and maintainable.
• SOAP & Windows Communication Foundation (WCF): Strong background in working with legacy SOAP and WCF services, including understanding of their architecture and migration strategies.
• OpenAPI & Swagger: Skilled in creating and maintaining OpenAPI specifications and using Swagger tools for API documentation and testing.
• Entity Framework Core: Proficient in using Entity Framework Core for data access and ORM in .NET Core applications.
• OAuth 2.0 & OpenID Connect: Expertise in implementing secure authentication and authorization protocols, including OAuth 2.0 and OpenID Connect.
• Multi-Factor Authentication (MFA): Experience designing and integrating MFA solutions to enhance security.
• JWT (JSON Web Tokens): Knowledge of JWT for secure token-based authentication and authorization.
• Adapter Pattern: Ability to apply the Adapter design pattern to enable compatibility between legacy and modern systems.
• File-Based Interface Development: Experience developing file-based interfaces for data exchange between systems.
• IVR System Integration: Familiarity with integrating backend services with Interactive Voice Response (IVR) systems to support telephony workflows.

Nice-to-Have Skills

• Azure: Experience with Microsoft Azure cloud services, including app services, storage, and identity management.
• Docker: Knowledge of containerization using Docker to package and deploy microservices efficiently.
• Kubernetes: Familiarity with Kubernetes orchestration for managing containerized applications at scale.
• RabbitMQ: Experience with RabbitMQ or similar message brokers for asynchronous communication between services.
• Azure Service Bus: Understanding of Azure Service Bus for reliable messaging and event-driven architectures.
• API Gateway Solutions: Exposure to API gateway technologies to manage, secure, and monitor APIs.
• Finance Domain Knowledge: Background in finance or supply chain domains to better understand business requirements and challenges.