WE ARE HIRING! | SENIOR .NET BACKEND / API INTEGRATION ENGINEER

Job Title: Senior .NET Backend / API Integration Engineer – Conversational AI Orchestration
Location: Eton Centris, Quezon Avenue, Quezon City, Manila, Philippines
Work Setup: Full Onsite / Hybrid (Pending Confirmation)
Work Shift: Mid to Night Shift
US Time Zone Alignment: Minimum 2 hours daily overlap with US Central Time (CST)
Salary: Up to PHP 150,000
Required Experience: Minimum 8+ Years (Non-Negotiable)
Headcount: 1
Education: College Graduate

ABOUT THE ROLE

We are looking for a highly skilled and experienced Senior .NET Backend / API Integration Engineer to join a healthcare-focused Conversational AI program.

The successful candidate will take ownership of designing, developing, and maintaining backend services and API orchestration solutions that connect authentication systems, third-party voice platforms, AI agents, and live-agent escalation channels.

This role requires strong expertise in .NET backend development, API integration, microservices architecture, and technical leadership. The ideal candidate must be comfortable working in an Agile/Scrum environment and using AI-assisted development tools within an AI-Driven Development Lifecycle (AIDLC).

KEY RESPONSIBILITIES

• Lead the technical design, development, and maintenance of backend services using C#, ASP.NET Core, and Entity Framework.

• Build and maintain orchestration and routing layers that coordinate multiple voice and AI agents.

• Design, develop, secure, and maintain RESTful APIs for internal and external integrations.

• Integrate third-party conversational AI platforms, voice solutions, contact center/IVR systems, and enterprise healthcare platforms.

• Develop and manage API authentication and authorization mechanisms.

• Provide technical leadership, mentor engineers, establish coding standards, and conduct code reviews.

• Collaborate with solution architects on technical designs, implementation strategies, and project estimates.

• Develop clean, scalable, secure, and well-documented code.

• Work closely with Product Owners, QA Engineers, DevOps teams, Architects, and business stakeholders.

• Drive unit testing, continuous integration, and software quality practices.

• Troubleshoot complex production issues and optimise backend performance.

MUST-HAVE QUALIFICATIONS & EXPERIENCE

• Bachelor's degree or equivalent college graduate qualification.

• Minimum of 8+ years of professional software development experience using .NET technologies, with a strong backend development focus.

• Hands-on experience with Agile/Scrum methodologies and AI-Driven Development Lifecycle (AIDLC).

• Practical experience using AI-assisted development tools such as GitHub Copilot and Claude.

• Strong proficiency in C#, ASP.NET Core, Web API, and Entity Framework.

• Extensive experience in API development, API integration, and microservices architecture.

• Proven experience designing orchestration or routing layers that coordinate multiple services or AI agents.

• Experience developing and consuming RESTful APIs, webhooks, WebSockets, and real-time interfaces.

• Strong understanding of API security standards, including OAuth 2.0, JWT, authentication, and authorization.

• Demonstrated technical leadership, mentoring, and ownership of software delivery.

• Basic understanding of AI concepts and AI-powered applications.

NICE-TO-HAVE SKILLS

• Experience integrating contact center and IVR platforms, including call transfers, caller authentication, and live-agent escalation.

• Experience consuming Large Language Model (LLM) and AI agent APIs.

• Familiarity with Azure OpenAI and Semantic Kernel.

• Knowledge of AI guardrails and conversational AI orchestration.

• Experience with event-driven architecture and messaging technologies such as Azure Service Bus and Kafka.

WORK ARRANGEMENT

• Location: Eton Centris, Quezon City.

• Work setup: Full onsite or hybrid, subject to confirmation.

• Shift: Mid to night shift.

• Must be willing to work with at least 2 hours of daily overlap with US Central Time (CST).

Important: Candidates must confirm their willingness to work in either a full onsite or hybrid arrangement before proceeding with the application.

APPLICATION PROCESS

1. Paper Screening

2. Level 1 Interview

3. Client Interview

PRE-SCREENING QUESTIONS

Interested candidates should be prepared to provide the following information:

1. Highest Educational Attainment:

2. Total Years of Working Experience:

3. Years of experience in .NET backend software development:

4. Do you have hands-on experience with Agile/Scrum and AIDLC using AI-assisted development tools?

5. Rate your proficiency in C#, ASP.NET Core, Web API, and Entity Framework (1–10):

6. Last Drawn Salary:

7. Expected Salary:

8. Are you amenable to working in a full onsite or hybrid setup at Eton Centris, Quezon City?

9. Are you comfortable with a mid-to-night shift schedule and at least 2 hours of daily overlap with US Central Time?

10. When are you available to start if selected?

READY FOR YOUR NEXT CAREER MOVE?

If you are an experienced .NET Backend Engineer with strong API integration, microservices, and technical leadership expertise, this is an excellent opportunity to contribute to an innovative healthcare Conversational AI program.

INTERESTED AND QUALIFIED CANDIDATES ARE ENCOURAGED TO APPLY NOW!