Senior .NET Backend / API Integration Engineer
Summary
Leads backend development and API integration for a healthcare conversational AI program: builds C#/.NET Core services, RESTful APIs, and orchestration layers connecting AI, voice, contact-center, and enterprise platforms, while mentoring developers and driving code quality.
Salary: ₱120,000 – ₱150,000 per month
We are looking for an experienced Senior .NET Backend / API Integration Engineer to join a healthcare technology program focused on conversational AI solutions.
The successful candidate will lead the development of backend services, API integrations, and orchestration systems that connect multiple AI-powered platforms, third-party services, and enterprise applications.
This role requires strong technical expertise in .NET development, API architecture, microservices, and backend integration, along with experience providing technical guidance and driving development initiatives.
Key Responsibilities
Design, develop, and maintain backend applications and services using C#, ASP.NET Core, and Entity Framework.
Build and manage API integration and orchestration layers connecting multiple platforms and services.
Develop, secure, and maintain RESTful APIs for internal and external integrations.
Integrate third-party AI, voice, contact center, and enterprise platforms.
Implement API authentication, authorization, and security standards.
Provide technical leadership, conduct code reviews, and mentor developers.
Collaborate with architects, product owners, QA, and DevOps teams.
Drive code quality, unit testing, and continuous integration practices.
Troubleshoot complex technical issues and optimize backend performance.
Qualifications
Bachelor's degree or equivalent college graduate qualification.
Minimum of 8 years of software development experience, with strong expertise in .NET backend development.
Proficiency in C#, ASP.NET Core, Web API, and Entity Framework.
Strong experience in RESTful API development, API integration, and microservices architecture.
Experience designing backend orchestration or routing layers involving multiple services.
Knowledge of API security, OAuth 2.0, JWT, authentication, and authorization.
Experience with webhooks, WebSockets, or real-time integrations.
Previous experience leading or mentoring development teams.
Familiarity with Agile/Scrum methodologies and AI-assisted development tools.
Preferred Qualifications
Experience integrating contact center, IVR, or voice platforms.
Exposure to AI agents, LLM APIs, Azure OpenAI, or Semantic Kernel.
Familiarity with Azure Service Bus, Kafka, or other event-driven integration technologies.