Senior C# Developer - Cloud Native, React & Trading Ops

astek singapore innovation technology pte. ltd.; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Astek Singapore is seeking a Senior C# Developer to support trading and trade operations applications. You will contribute to backend services in C#, frontend with ReactJS, and deployments in AWS/EKS. Emphasis on using Claude Code or GitHub Copilot to accelerate development.

The role requires strong hands-on C# experience, cloud-native skills, and a collaborative, Agile mindset. Expect to work across backend and frontend layers, with a focus on scalable, reliable deliveries.

Qualifications

• Degree in Computer Science/Information Technology or related field.
• Minimum 8 years of development experience.
• Experience with Claude Code, GitHub Copilot or similar agentic coding tools.
• Proficiency in C#, AWS, EKS and containerized deployments.
• Strong analytical, problem-solving and troubleshooting skills.
• Knowledge of UI/ReactJS development.

Responsibilities

• Develop, enhance, and maintain trading and trade operations applications.
• Design backend components using C#.
• Build and support AWS-based applications.
• Work with Amazon EKS and containerized deployments for scalable systems.
• Develop frontend/UI with ReactJS.
• Troubleshoot issues and resolve technical problems.
• Collaborate with business and technical teams on enhancements.
• Participate in Agile development activities and releases.
• Follow best practices for code quality and maintainability.

Skills

C#

ReactJS

UI development

Agile methods

Education

Bachelor's degree in Computer Science/Information Technology or related fields

Tools

Claude Code

GitHub Copilot

AWS

Amazon EKS

Containerized environments

Job description

Astek Singapore is seeking a Senior C# Developer to support trading and trade operations applications. You will contribute to backend services in C#, frontend with ReactJS, and deployments in AWS/EKS. Emphasis on using Claude Code or GitHub Copilot to accelerate development.

The role requires strong hands-on C# experience, cloud-native skills, and a collaborative, Agile mindset. Expect to work across backend and frontend layers, with a focus on scalable, reliable deliveries.