Senior .NET Developer

Teamlease Digital Private Limited; Singapore; On-site; SGD 90,000 - 150,000; Full time

Job summary

TeamLease Digital Private Limited is seeking a Senior .NET Developer to build and maintain enterprise ITSM and automation solutions. You will work on backend services with .NET 8, REST APIs, and database integrations (PostgreSQL/SQL Server) while implementing authentication and enterprise integrations.

You will containerize apps with Docker, contribute to CI/CD pipelines, and collaborate with frontend teams for React integration, QA and infrastructure partnerships.

Qualifications

• 5+ years of professional experience in C#/ .NET / ASP.NET Core development.
• Strong hands-on experience in REST API / Web API development.
• Good knowledge of PostgreSQL or SQL Server and Entity Framework / ORM.
• Hands-on experience with Docker, Git and CI/CD.
• Strong debugging and production troubleshooting skills.
• Experience with enterprise application integration.
• Good communication and collaboration with frontend, QA and infrastructure teams.
• Experience with React / Type in full-stack development.
• Knowledge of LDAP / Active Directory integrations.
• Experience with Python or Ansible Automation Platform (AAP).
• Exposure to AI/ML/LLM integrations or AI-assisted development.

Responsibilities

• Design, develop and maintain backend services and REST APIs using .NET 8 / ASP.NET Core.
• Develop and integrate database solutions using PostgreSQL, SQL Server, Entity Framework and Npgsql.
• Implement authentication and authorization using JWT, Windows/Negotiate Authentication, LDAP and Active Directory.
• Integrate APIs with ITSM platforms, directory services and internal enterprise systems.
• Collaborate with frontend teams for React/Type API integration.
• Containerize applications using Docker and support CI/CD pipelines using Jenkins or GitLab CI.
• Develop unit and integration tests and participate in code reviews.
• Follow secure coding and code-quality practices using tools such as SonarQube.
• Troubleshoot production issues and implement logging and observability solutions.
• Contribute to backend architecture, system reliability, security and maintainability.

Skills

C#

.NET

ASP.NET Core

REST API

PostgreSQL

SQL Server

Entity Framework

Npgsql

Docker

Git

CI/CD

React

LDAP

Active Directory

Python

Ansible

AI/LLM

TypeScript

Tools

Docker

Git

Jenkins

GitLab CI

React

TypeScript

Npgsql

Entity Framework

PostgreSQL

SQL Server

LDAP

Active Directory

Ansible

Python

AI/LLM

Job description

We are looking for a Senior .NET Developer with strong experience in C#, .NET, ASP.NET Core and REST API development to build and maintain enterprise ITSM and platform automation solutions.

The role involves backend development, database integration, authentication, enterprise system integrations, containerization, CI/CD, testing and production troubleshooting.

Key Responsibilities

• Design, develop and maintain backend services and REST APIs using .NET 8 / ASP.NET Core.
• Develop and integrate database solutions using PostgreSQL, SQL Server, Entity Framework and Npgsql.
• Implement authentication and authorization using JWT, Windows/Negotiate Authentication, LDAP and Active Directory.
• Integrate APIs with ITSM platforms, directory services and internal enterprise systems.
• Collaborate with frontend teams for React/Type API integration.
• Containerize applications using Docker and support CI/CD pipelines using Jenkins or GitLab CI.
• Develop unit and integration tests and participate in code reviews.
• Follow secure coding and code-quality practices using tools such as SonarQube.
• Troubleshoot production issues and implement logging and observability solutions.
• Contribute to backend architecture, system reliability, security and maintainability.

Required Skills

• 5+ years of professional experience in C#/.NET / ASP.NET Core development.
• Strong hands-on experience in REST API / Web API development.
• Good knowledge of PostgreSQL or SQL Server and Entity Framework / ORM.
• Hands-on experience with Docker, Git and CI/CD.
• Strong debugging and production troubleshooting skills.
• Experience with enterprise application integration.
• Good communication and ability to collaborate with frontend, QA and infrastructure teams.

Good to Have

• Experience with React / Type or full-stack development.
• Knowledge of LDAP / Active Directory integrations.
• Experience with Python or Ansible Automation Platform (AAP).
• Exposure to AI/ML/LLM integrations or AI-assisted development.
• Experience working across .NET, React/Node.js and Python automation environments.

Preferred Technical Stack

C# | .NET 8 | ASP.NET Core | REST APIs | PostgreSQL | SQL Server | Entity Framework | Npgsql | Docker | Git | Jenkins | GitLab CI | React | Type | LDAP | Active Directory | Python | Ansible