Backend Developer (Node.js)

NEWTONE CONSULTING PTE. LTD.; Singapore; On-site; SGD 90,000 - 150,000; Full time

Job summary

NEWTONE CONSULTING PTE. LTD. is seeking a Backend Developer to design and build secure, scalable backend services supporting mobile SDKs and digital payment platforms.

You will develop APIs, integrate cloud and payment systems, and contribute to platform architecture in a security-conscious environment. Responsibilities include building secure backend services with Node.js, designing scalable APIs, and ensuring integration with cloud services, payment gateways, and authentication systems.

Qualifications

• Proficient in JavaScript backend development (Node.js).
• Experience designing RESTful APIs and microservices.
• Familiar with secure API design and authentication.
• Experience with cloud deployment and CI/CD pipelines.

Responsibilities

• Design and build secure backend services using Node.js.
• Develop scalable APIs and service layers for mobile apps and platforms.
• Ensure secure integration with cloud services, payment gateways, and auth systems.
• Maintain management dashboards for operational monitoring and admin tasks.
• Collaborate with mobile SDK teams on backend integrations for payments.
• Contribute to secure API architectures for digital identity and payments.
• Apply object-oriented design and modern backend practices.
• Prototype new features and platform enhancements.
• Participate in architecture reviews and tech discussions.
• Implement unit tests and automated testing frameworks.
• Work with CI/CD pipelines and build automation tools.
• Provide Level 3 technical support for complex backend issues.
• Collaborate with security engineers and product teams on integrated payment solutions.

Skills

Node.js

JavaScript

RESTful APIs

Microservices

Secure API design

Cloud deployment

CI/CD

Testing frameworks

Job description

Summary:

We are looking for a Backend Developer to design and build secure, scalable backend services supporting mobile SDKs and digital payment platforms. The role involves developing APIs, integrating cloud and payment systems, and contributing to platform architecture within a regulated, security-conscious environment.

Responsibilities:

• Design and build secure backend services and cloud-based solutions using JavaScript/Node.js
• Develop scalable APIs and service layers connecting mobile applications, SDKs, and enterprise platforms
• Ensure secure integration with cloud services, payment gateways, and authentication systems
• Build and maintain management platforms/dashboards for operational monitoring and system administration
• Collaborate with mobile SDK teams on backend integration for mobile payment applications
• Support design of secure API architectures aligned with digital identity and payment security standards
• Apply object-oriented design principles and modern backend engineering practices
• Contribute to prototyping new features and platform enhancements
• Participate in technical discussions and architecture reviews
• Implement unit testing and automated testing frameworks
• Work with CI/CD pipelines and build automation tools
• Provide Level 3 technical support for complex backend issues
• Collaborate with mobile developers, security engineers, and product teams on integrated payment solutions

Qualifications/Requirements:

• Strong experience in JavaScript backend development, particularly Node.js
• Experience building RESTful APIs and microservices architectures
• Familiarity with secure API design and authentication protocols
• Experience with cloud-based infrastructure and backend service deployment
• Strong understanding of object-oriented design and scalable software architecture
• Experience with unit testing and automated testing frameworks
• Familiarity with CI/CD tools such as Jenkins, Git-based workflows, and build automation
• Strong problem-solving, debugging, and troubleshooting skills