Backend Software Engineer

Backend Software Engineer (NestJS / TypeScript) – 1 Position

✅ Responsibilities

· Develop and maintain backend systems using NestJS and TypeScript

· Design and optimize data models and queries using PostgreSQL

· Integrate with external ad platforms (e.g., LinkedIn API)

· Implement OAuth2 and other authentication/authorization logic

· Design and document RESTful APIs

· Write and maintain unit tests (e.g., Jest) and ensure code quality

· Collaborate with frontend and other backend developers

· Contribute to future features including AI-based automated ad execution and budget optimization

Requirements

· 2+ years of experience with backend development using Node.js/NestJS

· Practical experience with TypeScript

· Experience with relational databases (PostgreSQL, etc.)

· Familiarity with message queues like RabbitMQ or Kafka

· Experience implementing secure API authentication (OAuth2, etc.)

· Experience with writing tests and participating in code reviews

· Proficiency with collaboration tools (Git, Jira, Notion, etc.)

Preferred Qualifications

· Experience integrating with ad platform APIs (Meta, Kakao, Google Ads, etc.)

· Experience with infrastructure tools (Docker, Redis, Clickhouse, etc.)

· Experience with cloud platforms such as AWS or GCP

· Proficiency in English or Korean communication

WALA-ICT offers a comprehensive and competitive compensation package, including:

• Attractive salary
• Full salary during probation period
• 13th-month bonus
• Hybrid working model (home office and in-office)
• 40-hour work week, Monday-Friday
• Open-minded, friendly, positive, transparent, and agile work environment