Software Engineer (C# and .NET)

COMBUILDER PTE LTD; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

COMBUILDER PTE LTD in Singapore is seeking a skilled software engineer to develop and maintain scalable applications using C# and .NET technologies, with a focus on database design and performance.

You will build containerized services with Docker, work with MS SQL Server and PostgreSQL, develop Android apps (Android Studio), and collaborate across the full SDLC to deliver reliable software.

Qualifications

• Proficient in C# and .NET Framework / .NET Core
• Hands-on experience with MS SQL Server and PostgreSQL
• Relational database design and SQL development
• Experience with query optimization and performance tuning
• Strong understanding of OOP and design patterns
• Experience with Docker and containerized deployments
• Android development experience using Android Studio (Advantage)
• Familiarity with Android SDK and API integration (Advantage)
• Version control with Git

Responsibilities

• Develop and maintain scalable applications using C#, .NET Framework, and .NET Core
• Design, optimize, and manage MS SQL Server and PostgreSQL databases
• Perform database schema design, query optimization, and performance tuning
• Build and maintain containerized applications using Docker
• Develop and support Android applications using Android Studio (Advantage)
• Integrate Android applications with backend APIs and databases
• Write clean, efficient, and well‑documented code following coding standards
• Conduct code reviews and participate in peer review processes
• Troubleshoot, debug, and resolve application and performance issues
• Participate in the full Software Development Lifecycle (SDLC)
• Maintain and update technical and deployment documentation
• Continuously optimize application, database, and mobile app performance (Advantage)
• Stay up to date with .NET, Android, database, and containerization best practices

Skills

C#

.NET Core/.NET Framework

OOP principles

Design patterns

Debugging

Communication

Tools

Docker

Android Studio

Android SDK

Git

MS SQL Server

PostgreSQL

Job description

Key Responsibilities

• Develop and maintain scalable applications using C#, .NET Framework, and .NET Core
• Design, optimize, and manage MS SQL Server and PostgreSQL databases
• Perform database schema design, query optimization, and performance tuning
• Build and maintain containerized applications using Docker
• Develop and support Android applications using Android Studio (Advantage)
• Integrate Android applications with backend APIs and databases
• Write clean, efficient, and well‑documented code following coding standards
• Conduct code reviews and participate in peer review processes
• Troubleshoot, debug, and resolve application and performance issues
• Participate in the full Software Development Lifecycle (SDLC)
• Maintain and update technical and deployment documentation
• Continuously optimize application, database, and mobile app performance (Advantage)
• Stay up to date with .NET, Android, database, and containerization best practices

Requirements

• Strong proficiency in C# and .NET Framework / .NET Core
• Hands‑on experience with MS SQL Server and PostgreSQL
• Solid understanding of relational database design and SQL development
• Experience with query optimization and database performance tuning
• Good understanding of OOP principles and design patterns
• Experience with Docker and containerized deployments
• Experience developing Android applications using Android Studio (Advantage)
• Familiarity with Android SDK and API integration (Advantage)
• Experience with version control systems (Git)
• Strong debugging, problem‑solving, and communication skills