Senior Full-Stack Developer (Next.js, Node.js, React)

LLL Inc.; Labuan; Hybrid; MYR 120,000 - 180,000; Full time

Job summary

LLL Inc. in Kuala Lumpur, Malaysia seeks a Senior Full-Stack Developer to build enterprise web apps and SaaS products for Japanese clients. You will work on projects from e-commerce to AI-powered BI using Next.js, React, and cloud infrastructure.

You’ll design scalable apps, implement REST and GraphQL APIs, deploy on AWS/Azure/GCP, and mentor engineers while communicating with bilingual stakeholders. This hybrid role requires 5+ years ofexperience and strong English.

Qualifications

• 5+ years professional software development experience.
• Expert in React and Next.js (App Router, Server Components, SSR/SSG).
• Strong Node.js backend experience (Express, NestJS, or Fastify).
• Proficient in TypeScript and modern JavaScript (ES6+).
• Experience with relational databases (PostgreSQL, MySQL).
• RESTful API design and GraphQL expertise.
• Familiarity with cloud platforms (AWS, Azure, or GCP).
• Git with GitHub/GitLab workflows.
• Excellent problem-solving and debugging skills.
• Strong communication in English (written and verbal).

Responsibilities

• Design and build scalable web applications using Next.js, React, Node.js
• Develop responsive, pixel-perfect UIs following Japanese design standards
• Create RESTful and GraphQL APIs for complex business logic
• Deploy and maintain applications on AWS/Azure/GCP
• Collaborate with Japanese clients (bilingual communication skills valued)
• Participate in code reviews and mentor junior developers
• Write comprehensive tests (unit, integration, E2E)
• Document technical specifications in English (Japanese a plus)

Skills

React

Next.js

Node.js

TypeScript

JavaScript

REST APIs

GraphQL

AWS

Azure

GCP

PostgreSQL

MySQL

Git

English

Teamwork

Mentoring

Unit tests

E2E tests

Education

Bachelor’s degree

Tools

Docker

Kubernetes

Job description

Senior Full-Stack Developer at LLL Inc.

Location: Kuala Lumpur, Malaysia (Hybrid: 3 days office, 2 days remote) Experience: 5+ years

About The Role

Join our core development team building enterprise web applications and SaaS products for Japanese clients. You’ll work on projects ranging from e-commerce platforms to AI-powered business intelligence tools, using modern technologies like Next.js, React, and cloud infrastructure.

Key Responsibilities

• Design and build scalable web applications using Next.js, React, Node.js
• Develop responsive, pixel-perfect UIs following Japanese design standards
• Create RESTful and GraphQL APIs for complex business logic
• Deploy and maintain applications on AWS/Azure/GCP
• Collaborate with Japanese clients (bilingual communication skills valued)
• Participate in code reviews and mentor junior developers
• Write comprehensive tests (unit, integration, E2E)
• Document technical specifications in English (Japanese a plus)

Required Qualifications

• 5+ years professional software development experience
• Expert in React and Next.js (App Router, Server Components, SSR/SSG)
• Strong Node.js backend experience (Express, NestJS, or Fastify)
• Proficient in TypeScript and modern JavaScript (ES6+)
• Experience with relational databases (PostgreSQL, MySQL)
• Solid understanding of RESTful API design and GraphQL
• Familiarity with cloud platforms (AWS, Azure, or GCP)
• Version control with Git and GitHub/GitLab workflows
• Excellent problem-solving and debugging skills
• Strong communication in English (written and verbal)

Preferred Qualifications

• Japanese language proficiency (N3 or higher)
• Experience with microservices architecture
• Prior work with Japanese clients or companies
• DevOps skills (Docker, Kubernetes, CI/CD)
• AI/ML integration experience (OpenAI, Anthropic Claude)
• Contributions to open source projects
• Bachelor’s degree in Computer Science or related field