Dot Net Developer REQ130

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

Key Responsibilities:

• Design, build, and maintain RESTful APIs and backend services using .NET 8 / ASP.NET Core
• Work with PostgreSQL (via Npgsql/Entity Framework) to design schemas, write efficient queries, and manage data access layers
• Implement and maintain authentication/authorization flows, including enterprise authentication and directory services integration
• Integrate backend services with third-party and enterprise systems (e.g., ITSM platforms, directory services, internal enterprise APIs)
• Collaborate with frontend engineers to design clean API contracts consumed by React/TypeScript applications
• Containerize services with Docker and support CI/CD pipelines (Jenkins, GitLab CI)
• Write unit and integration tests, participate in code reviews, and uphold code quality standards (e.g., SonarQube)
• Troubleshoot and resolve production issues across the stack, with structured logging (log4net) and observability practices
• Contribute to architecture decisions for new services and the evolution of existing ones

What We're Looking For

• 5+ years of professional experience building backend services in C# / .NET (ASP.NET Core preferred)
• Strong understanding of REST API design, authentication/authorization patterns, and secure coding practices
• Experience working with relational databases (PostgreSQL, SQL Server, or similar) and ORMs (Entity Framework or equivalent)
• Familiarity with containerization (Docker) and CI/CD pipelines
• Experience with version control (Git) and collaborative development workflows
• Strong debugging, troubleshooting, and problem-solving skills
• Clear written and verbal communication, with the ability to work cross-functionally with frontend, QA, and infrastructure teams

Nice to Have (Advantages)

• Full-stack development experience — comfort working across the stack with React/TypeScript front ends, from API design to UI integration
• AI/ML knowledge — familiarity with applying AI/LLM tooling to developer workflows, automation, or product features (e.g., integrating LLM APIs, prompt engineering, or AI-assisted development practices)
• Automation experience with Python and/or Ansible Automation Platform (AAP) — building or maintaining scripts, playbooks, or jobs for infrastructure automation, compliance checks, or operational tooling

What Makes You Stand Out

• Experience integrating enterprise systems with enterprise directory services or similar identity providers
• Exposure to hybrid environments where .NET services, Node/React front ends, and Python-based automation coexist and need to interoperate
• A track record of improving reliability, security, or maintainability of backend systems in a production environment