Senior .NET Backend Engineer for Scalable, Reliable Systems

INFOWIZ PTE LTD; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

INFOWIZ PTE LTD is seeking a Senior Backend Engineer to design, build and maintain the services that support our product operations. You will own backend features, APIs, and production issues across management platforms, configuration, and integrations.

You will work with product, frontend, QA, and DevOps teams to deliver reliable, scalable services for high-traffic environments. Experience with C#/.NET and relational databases is essential, as is mentoring junior engineers and improving

Qualifications

• Bachelor's degree or equivalent practical experience.
• At least 5 years of hands-on backend development, including ownership of production services.
• Strong practical experience with C# and .NET Core / .NET.
• Solid understanding of RESTful API design, HTTP, service integrations, and backend system design.
• Experience with relational databases (MySQL, PostgreSQL, or SQL Server), including SQL optimization; NoSQL familiarity is a plus.
• Ability to write clean, maintainable, thread-safe code with data consistency, scalability, and fault tolerance.
• Experience diagnosing performance issues and resolving incidents in live systems.
• Clear communication skills and the ability to make technical decisions while working across teams.
• Proficient in AI-assisted development tools and prompt engineering.

Responsibilities

• Design, develop, and maintain backend services and APIs supporting product operations and internal management platforms.
• Build reliable workflows for configuration, operational controls, data processing, and platform integrations.
• Own technical design and delivery for complex features, including code reviews, testing, documentation, and production rollout.
• Improve service performance, database queries, concurrency handling, and availability.
• Investigate production incidents, identify root causes, and implement lasting fixes.
• Leverage Vibe Coding practices and AI coding tools to boost individual and team productivity, and explore AI-driven innovations in development workflows.
• Work with product, frontend, QA, and DevOps teams to deliver and support backend features.
• Mentor junior engineers and help improve engineering standards and system maintainability.

Skills

C# & .NET

RESTful API design

SQL optimization

Concurrency & fault tolerance

Performance debugging

Cross-team communication

Mentoring engineers

Education

Bachelor's degree in Computer Science or related field

Tools

MySQL

PostgreSQL

SQL Server

Docker

Kubernetes

AI coding tools (GitHub Copilot, Cursor, ChatGPT, Claude)

Job description

INFOWIZ PTE LTD is seeking a Senior Backend Engineer to design, build and maintain the services that support our product operations. You will own backend features, APIs, and production issues across management platforms, configuration, and integrations.

You will work with product, frontend, QA, and DevOps teams to deliver reliable, scalable services for high-traffic environments. Experience with C#/.NET and relational databases is essential, as is mentoring junior engineers and improving