Full Stack Developer (Back-end focused) | Contract

BASE CAMP DIGITAL PTE. LTD.; Singapore; On-site; SGD 80,000 - 120,000; Full time

Job summary

A leading digital platform provider in Singapore is seeking a Senior Fullstack Engineer to design and optimize scalable services. This role focuses on backend logic, cloud-native workloads, and API development. Ideal candidates have 5+ years of experience and strong expertise in AWS and Node.js. Competitive compensation and opportunities for career growth are offered.

Qualifications

• At least 5+ years of professional backend or fullstack development experience.
• Expert-level proficiency in Node.js for production services.
• Strong hands-on experience with AWS, including Aurora, DynamoDB, Lambda, and ECS.

Responsibilities

• Design, build, and optimize scalable RESTful and/or GraphQL APIs.
• Develop core business logic and high-throughput backend components.
• Architect and deploy cloud-native services on AWS.

Skills

Node.js

AWS

RESTful APIs

GraphQL

Cloud infrastructure

Tools

AWS Lambda

Terraform

CloudFormation

Job description

What's on Offer

• Contract, subject to extension

Summary

We are seeking a highly skilled Senior Fullstack Engineer with strong backend expertise to design, build, and optimize mission-critical services that power our digital platforms. You will architect high-performance APIs, integrate complex SaaS ecosystems, and deploy modern cloud-native workloads on AWS. This role is ideal for a seasoned engineer who thrives on building scalable systems end-to-end—from backend logic and data flows to cloud infrastructure and operational excellence.

Responsibilities

• Design, build, and optimize scalable RESTful and/or GraphQL APIs using Node.js frameworks (Express, NestJS, Koa).
• Develop core business logic, data processing pipelines, and high-throughput backend components.
• Architect and deploy cloud-native services on AWS with a focus on performance, reliability, and cost efficiency.
• Work with AWS databases including Aurora (MySQL/PostgreSQL) and DynamoDB for both relational and NoSQL workloads.
• Build serverless applications using AWS Lambda and manage containerized workloads with AWS ECS (Fargate/EC2).
• Implement observability, monitoring, logging, and alerting using AWS CloudWatch.
• Design and implement integration layers connecting external SaaS platforms (CRM, payment gateways, marketing tools) to internal systems.
• Handle authentication flows (OAuth, API keys), rate limits, and data synchronization with external APIs.
• Develop resilient retry, fallback, and error-handling mechanisms for third-party API interactions.
• Write clean, maintainable, and well-tested code (unit, integration, and E2E).
• Participate in code reviews, architecture discussions, and technical planning.
• Contribute to CI/CD pipelines, deployment automation, and release processes.

Requirements

• At least 5+ years of professional backend or fullstack development experience.
• Expert-level proficiency in Node.js for production services.
• Strong hands-on experience with AWS, including:
  Aurora (MySQL/PostgreSQL) and DynamoDB
  AWS Lambda
  AWS ECS (Fargate/EC2)
  CloudWatch for monitoring and observability
• Demonstrated experience integrating third-party SaaS platforms (e.g., Salesforce, HubSpot, Stripe) into internal systems.
• Solid understanding of API security, authentication standards, and scalable architectural patterns.

Preferred Skills

• Experience with IaC tools (Terraform, CloudFormation).
• Familiarity with event-driven architectures (SQS, SNS, EventBridge).
• Experience with microservices or distributed systems.