Design, develop, and maintain backend-centric applications using C# and .NET
Translate business requirements into scalable technical solutions and prototypes
Contribute to the decomposition of a monolithic system into modular, microservices-based components

Overview

We are hiring a C# / .NET Developer to join our team. This role focuses on designing, developing, and modernising applications that support business-critical operations.

The position plays a key role in an ongoing transformation initiative to evolve a high-usage platform into a more scalable, modular architecture. You will work closely with both business and technology stakeholders to support this transformation.

About The Role

This is a backend-focused engineering role, where you will primarily work with C# and .NET to design and build scalable services. While there is some full stack exposure, the core responsibility lies in backend development, system design, and performance optimisation. The role requires strong technical depth, the ability to break down complex systems, and confidence in articulating solutions within a collaborative, Agile environment.

What You'll Do

Design, develop, and maintain backend-centric applications using C# and .NET
Translate business requirements into scalable technical solutions and prototypes
Contribute to the decomposition of a monolithic system into modular, microservices-based components
Build and enhance backend services with a focus on performance, scalability, and reliability
Develop and integrate APIs using REST, SOAP, and JSON
Work with relational databases such as SQL Server and/or Oracle
Apply design patterns, coding best practices, and clean architecture principles
Participate in Agile ceremonies including sprint planning, stand-ups, and program increment discussions
Contribute to technical discussions, architecture decisions, and problem-solving sessions

Must‑Have Experience

Deep expertise in C#/.NET with a focus on backend (preferred 10+ years of experience)
Experience with relational databases (SQL Server and/or Oracle)
Strong experience designing and integrating APIs (REST, SOAP, JSON)
Hands-on experience with unit testing (e.g. NUnit, xUnit) and writing clean, maintainable code
Solid understanding of software design principles and design patterns
Working knowledge of frontend technologies (HTML, CSS, JavaScript, Angular/jQuery)
Strong problem-solving and critical thinking skills with clear communication
Experience working in Agile environments (e.g. Scrum, SAFe) with tools like JIRA or Git
Ability to work independently and collaborate across global teams

Nice-to-Have Experience

Exposure to microservices architecture and container platforms (e.g. Kubernetes)

Why Join

Your work will directly support thousands of users across the platform.
Take genuine ownership of technical deliverables, from production support to mini-greenfield initiatives
Play a hands-on role in decoupling a monolithic application and contributing to modernisation of large systems.
Work with development teams across multiple regions, broadening your professional network and cross-regional experience.
Engage directly with both business and technology partners, building expertise that goes well beyond pure engineering.

We regret to inform that only shortlisted candidates will be notified.

EA Registration No: R25158204, Wong Lin, Rachel

Allegis Group Singapore Pte Ltd, Company Reg No. 200909448N, EA License No. 10C4544

C / .NET Developer

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