Full-Stack .NET Core Engineer - Microservices & AWS

U3 INFOTECH PTE. LTD.; Singapore; On-site; SGD 90,000 - 160,000; Full time

Job summary

U3 INFOTECH PTE. LTD. is seeking a Software Engineer (Full Stack) to own end-to-end development of financial-grade software. You will work on microservices using .NET Core/.NET 8, Java, and cloud-native patterns within an agile team.

The role covers backend and frontend development, including Docker-based deployments, EF data access, and security best practices. Prior experience with WebForms, AWS, and Open Telemetry is highly valued.

Qualifications

• Proven professional experience with .NET Core stack and C#/.NET 8.
• Experience building microservices and event-driven designs.
• EF for database interaction; familiarity with Oracle is a plus.
• Docker containerization and deployment in Windows/IIS environments.
• OAuth-based authentication/authorization and security best practices.
• AWS services (S3, Lambda, API Gateway, RDS) for backend development.
• Frontend tech: HTML, CSS, JavaScript, ASP.NET, WebForms.

Responsibilities

• Design, develop, and maintain microservices architecture using .NET Core, .NET 8 and Java.
• Implement event-driven patterns and integrate with AWS services.
• Utilize EF for efficient database interactions and management.
• Containerize applications using Docker and manage deployments on Windows/IIS.
• Apply Domain-Driven Design principles for clean, modular code architecture.
• Develop RESTful API endpoints for frontend-backend communication.
• Support legacy .NET Framework apps and migrate to modern .NET where applicable.
• Frontend development with ASP.NET WebForms and responsive UI components.
• Collaborate with UX/UI designers to implement intuitive interfaces.
• Write unit tests and leverage AI-assisted review for code quality.

Skills

NET Core

C#

Java

Frontend development

ASP.NET

WebForms

Docker

AWS

DDD

OAuth

Security best practices

Entity Framework

Open Telemetry

Tools

Docker

EF

AWS

Oracle

Quarkus

Storybook

Job description

U3 INFOTECH PTE. LTD. is seeking a Software Engineer (Full Stack) to own end-to-end development of financial-grade software. You will work on microservices using .NET Core/.NET 8, Java, and cloud-native patterns within an agile team.

The role covers backend and frontend development, including Docker-based deployments, EF data access, and security best practices. Prior experience with WebForms, AWS, and Open Telemetry is highly valued.