Web Engineer: React/Next.js & API Integration

Kejar; Jakarta Pusat; On-site; IDR 180,000,000 - 300,000,000; Full time

Job summary

Kejar is seeking a frontend/backend engineer to develop, maintain, and optimize modern web applications using React.js or Next.js, and to build robust REST APIs for seamless frontend-backend communication.

You will work with Node.js or Java on the backend, implement authentication with JWT, and collaborate with cross-functional teams to deliver high-quality software aligned with business goals.

Qualifications

• Familiar with React.js or Next.js.
• Able to integrate REST APIs.
• Understand async/await and error handling.
• Experience with Node.js or Java for backend development.
• Able to build and manage REST API (CRUD).
• Understand MySQL and PostgreSQL with ORM.
• Familiar with Authentication & Authorization (JWT/Session).
• Experienced with Git and API testing tools such as Postman or Insomnia.
• Strong debugging, analytical thinking, and problem-solving skills.

Responsibilities

• Develop, maintain, and optimize modern web applications.
• Build responsive, interactive user interfaces with React.js or Next.js.
• Develop and integrate REST APIs for frontend-backend communication.
• Identify and resolve technical issues to maintain performance.
• Collaborate with cross-functional teams to deliver software solutions.

Skills

React.js

Next.js

REST APIs

Async/await

Error handling

Node.js

Java

CRUD APIs

MySQL

PostgreSQL

ORM

JWT/Session

Git

Postman

Insomnia

API testing

Debugging

Analytical thinking

Problem-solving

Tools

Postman

Insomnia

Job description

Kejar is seeking a frontend/backend engineer to develop, maintain, and optimize modern web applications using React.js or Next.js, and to build robust REST APIs for seamless frontend-backend communication.

You will work with Node.js or Java on the backend, implement authentication with JWT, and collaborate with cross-functional teams to deliver high-quality software aligned with business goals.