Senior .NET Backend Engineer - REST APIs & Integration

User Experience Researchers Pte Ltd; Singapore; Hybrid; SGD 100,000 - 140,000; Full time

Job summary

User Experience Researchers Pte Ltd in Singapore seeks a backend specialist to design and deliver robust APIs and services using .NET 8/ASP.NET Core. You will collaborate with frontend teams to ensure clean API contracts and scalable data models with PostgreSQL, while implementing secure auth flows and enterprise integrations.

Responsibilities include containerization with Docker, CI/CD support, and rigorous testing and code quality practices, contributing to a reliable production stack and

Qualifications

• 5+ years of professional backend experience with C#/.NET (ASP.NET Core preferred).
• Strong REST API design knowledge and secure coding practices.
• Experience with relational DBs (PostgreSQL/SQL Server) and ORMs (EF or similar).
• Familiarity with Docker and CI/CD pipelines.
• Experience with Git and collaborative DevOps workflows.

Responsibilities

• Design, build, and maintain RESTful APIs and backend services using .NET 8/ASP.NET Core.
• Work with PostgreSQL to design schemas, write queries, and manage data access layers.
• Implement and maintain authentication/authorization flows and directory services integration.
• Integrate backend services with enterprise systems and APIs.
• Collaborate with frontend teams to define API contracts for React/TypeScript apps.
• Containerize services with Docker and support CI/CD pipelines (Jenkins, GitLab CI).
• Write tests, participate in code reviews, and maintain code quality (e.g., SonarQube).
• Troubleshoot production issues with logging and observability practices.
• Contribute to architectural decisions for new/existing services.

Skills

C#/.NET

ASP.NET Core

REST APIs

PostgreSQL

Entity Framework

Docker

CI/CD

Git

Testing

Security

Tools

Npgsql

SQL Server

Job description

User Experience Researchers Pte Ltd in Singapore seeks a backend specialist to design and deliver robust APIs and services using .NET 8/ASP.NET Core. You will collaborate with frontend teams to ensure clean API contracts and scalable data models with PostgreSQL, while implementing secure auth flows and enterprise integrations.

Responsibilities include containerization with Docker, CI/CD support, and rigorous testing and code quality practices, contributing to a reliable production stack and