Fullstack Developer (Backend)

U3 Infotech Pte Ltd; Singapore; On-site; SGD 80,000 - 100,000; Full time

Job summary

A leading tech firm in Singapore is seeking a skilled Fullstack Developer with a strong backend focus. The ideal candidate will have significant experience in NodeJS, API design, and AWS cloud engineering, playing a key role in building and integrating robust backend systems. This position offers a chance to work on high-performance applications with a strong emphasis on scalability and integration. Competitive compensation and a supportive work environment are provided.

Qualifications

• Significant professional experience in fullstack or backend development (typically 5+ years).
• Strong expertise in NodeJS and its ecosystem.
• Hands-on experience with AWS services including Aurora and DynamoDB.

Responsibilities

• Design and maintain scalable RESTful or GraphQL APIs using NodeJS.
• Architect and deploy services using AWS for high availability.
• Develop integration layers connecting SaaS products with internal systems.

Skills

NodeJS

API development

AWS services

Database management

Cloud architecture

Tools

AWS Lambda

AWS ECS

AWS CloudWatch

Job description

Client is seeking a skilled Fullstack Developer with a strong backend focus to join our engineering team. You will play a key role in building robust, high-performance backend systems and integrating our proprietary applications with third-party SaaS platforms. This role requires deep expertise in NodeJS, API development, databases, and cloud-native services on AWS.

Role Overview

This is a backend-focused Fullstack role suitable for individuals with substantial experience in designing, developing, and deploying scalable services. You will be responsible for the full development lifecycle from API design to cloud deployment and monitoring with a strong emphasis on data integration and service connectivity.

Key Responsibilities

Backend Development & API Design

• Design, build, and maintain performant, scalable, and secure RESTful or GraphQL APIs using NodeJS (e.g., Express, NestJS, Koa).
• Implement core business logic and data processing services.

AWS Cloud Engineering

• Architect and deploy services using AWS to ensure high availability and cost efficiency.
• Manage relational (e.g., AWS Aurora) and NoSQL (e.g., DynamoDB) databases, optimizing performance.
• Develop serverless functions using AWS Lambda and manage containerized applications via AWS ECS.
• Implement monitoring, logging, tracing, and alerting using AWS CloudWatch.

SaaS and System Integration

• Develop integration layers connecting SaaS products (e.g., CRM, payment systems, marketing tools) with internal systems.
• Manage authentication protocols, rate limits, and data synchronization.
• Build resilient error-handling and retry mechanisms.

Code Quality & DevOps

• Write clean, well-documented, testable code (unit, integration, E2E).
• Participate in code reviews and technical discussions.
• Contribute to CI/CD pipelines and deployment automation.

Required Skills & Experience

Applicants should demonstrate:

• Significant professional experience in fullstack or backend development (typically 5+ years or equivalent proficiency).
• Strong expertise in NodeJS and its ecosystem.
• Hands‑on experience with AWS services, including:
• Aurora (MySQL/PostgreSQL) and DynamoDB
• AWS Lambda
• AWS ECS
• AWS CloudWatch configuration
• Proven ability to integrate commercial SaaS platforms (e.g., Salesforce, HubSpot, Stripe).
• Solid understanding of API security, data handling best practices, and clean architecture.

Preferred Skills

• Familiarity with IaC tools such as Terraform or CloudFormation.
• Experience with event‑driven architectures using AWS SQS or SNS.