Backend Engineer (AWS) - Integrations & APIs

Visionaries 777 Limited; Hong Kong; On-site; HKD 420,000 - 660,000; Full time

Job summary

Visionaries 777 Limited seeks a hands-on Backend Engineer (AWS) to build and maintain reliable backend services and APIs supporting web and mobile experiences. You will focus on integrations with Salesforce, Shopify and push notification providers to enable seamless data flows.

The role requires practical AWS experience and 3+ years in backend development, with a strong emphasis on secure, scalable APIs and clear API contracts. A collaborative, English-speaking environment awaits.

Qualifications

• 3+ years of backend development experience.
• Experience with Node.js or Go; Python is a plus.
• Practical AWS experience (ECS, ECR, VPC, API Gateway, S3, CloudFront, RDS/Postgres, SQS).
• REST APIs with exposure to GraphQL.
• Integrations with Salesforce, Shopify, or OneSignal preferred.
• Knowledge of OAuth/JWT, IAM basics, and OWASP fundamentals.
• Clear English communication and collaborative mindset.

Responsibilities

• Build and maintain backend services and APIs on AWS (ECS, ECR, VPC, API Gateway, S3, CloudFront, RDS/Postgres, SQS).
• Design and operate secure, highly reliable backend infrastructure (VPC networking, containerized services on ECS).
• Implement integrations with Salesforce, Shopify, and push notifications (OneSignal or similar).
• Write clean, well-documented API endpoints (REST/GraphQL) and maintain clear schema/contracts.
• Set up basic CI/CD and monitoring; contribute to Infrastructure as Code (CloudFormation/Terraform).
• Ensure security, reliability, and performance basics: authentication/authorization, input validation, caching, logs/metrics/alerts.
• Collaborate with frontend/mobile teams to deliver features on time and with quality.

Skills

Node.js

Go

AWS

REST APIs

GraphQL

OAuth/JWT

OWASP

CI/CD

English

Salesforce

Shopify

OneSignal

Tools

ECS

ECR

VPC

API Gateway

S3

CloudFront

RDS

Postgres

SQS

CloudFormation

Terraform

Job description

Backend Engineer (AWS) - Integrations & APIs

We're looking for a hands-on Backend Engineer to help us build and maintain reliable backend services on AWS. You'll focus on APIs, data flows, and integrations that power our web and mobile experiences. Ideal if you've connected third-party platforms like Salesforce, Shopify, and push notification providers (e.g., OneSignal).

What you'll do

• Build and maintain backend services and APIs on AWS (ECS, ECR, VPC, API Gateway, S3, CloudFront, RDS/Postgres, SQS).
• Design and operate secure, highly reliable backend infrastructure (VPC networking, containerized services on ECS).
• Implement integrations with Salesforce (REST/Bulk APIs), Shopify, and push notifications (OneSignal or similar).
• Write clean, well-documented API endpoints (REST/GraphQL) and maintain clear schema/contracts.
• Set up basic CI/CD and monitoring; contribute to Infrastructure as Code (CloudFormation/Terraform) with guidance.
• Ensure security, reliability, and performance basics: authentication/authorization, input validation, caching, logs/metrics/alerts.
• Collaborate with frontend/mobile teams to deliver features on time and with quality.

Requirements

• 3+ years of backend development experience (Node.js or Go preferred; Python a strong plus).
• Practical experience building on AWS (ECS, ECR, VPC, API Gateway, S3, CloudFront, RDS/Postgres, SQS).
• Comfortable with REST APIs; exposure to GraphQL helpful.
• Experience integrating at least one of: Salesforce, Shopify, or OneSignal (or similar).
• Understanding of authentication best practices (OAuth/JWT, IAM basics) and OWASP fundamentals.
• Clear communication in English and a collaborative, problem-solving mindset.

Nice to have

• Experience with webhooks, event-driven patterns (SNS/SQS, Redis), and rate limiting.
• Familiarity with headless CMS (Strapi, Contentful, Sanity, Prismic, Hygraph, WordPress headless).
• Exposure to Next.js/React integrations and preview environments.
• Terraform basics and setting up simple CI/CD pipelines (GitHub Actions, GitLab CI).