Senior Back-end Developer

5 days ago

Hanoi Capital Region, Vietnam BLUE BELT TECHNOLOGY CO.,LTD Full time ₫2,200,000 - ₫4,000,000 per year

Introduction

With over a decade of experience in IT and fintech, Blue Belt has become a leading software development company, delivering innovative technology solutions to a diverse global clientele. We specialize in developing web, mobile, payment, and blockchain applications that offer seamless user experiences. Headquartered in Tokyo, Japan, with a state-of-the-art Technology Center in Hanoi, Vietnam, Blue Belt operates in more than ten countries, including Japan, Thailand, Indonesia, the Philippines, Malaysia, Taiwan, and Brazil. Our team of over 300 professionals brings a wealth of expertise to drive our global operations.

We are seeking a highly skilled Back-end Developer specializing in to build robust, scalable, and secure APIs and services. As part of our engineering team, you will collaborate with front-end developers, DevOps engineers, and product managers to design and deliver backend solutions that power our applications. The ideal candidate has a strong understanding of modern backend architectures, RESTful API design, and cloud-first deployment strategies.

Key responsibilities:

  • Create and implement user information solutions by
    developing components and APIs
    that serve web and mobile interfaces.
  • Maintain and enhance back-end logic, services, and integrations with databases and external systems.
  • Participate in the
    architecture and design of scalable platforms
    , collaborating with cross-functional teams to ensure alignment on technical decisions and product goals.
  • Contribute to technical solution planning by evaluating feasibility, performance impact, and long-term maintainability.
  • Write clean, efficient, and reusable code in JavaScript/TypeScript using modern frameworks.
  • Test, debug, and conduct peer code reviews
    to maintain code quality and support collaborative development.
  • Implement unit and integration tests to ensure code reliability and correctness.
  • Support front-end integration by
    developing API interfaces for web/intranet applications
    , aligning with UI/UX expectations.
  • Set feature priorities throughout the development life cycle by determining design methodologies, tool sets, and resource planning.
  • Complete programming tasks using appropriate languages, frameworks, and platforms.
  • Design and conduct validation tests
    to confirm system behavior, performance, and resilience across environments.

Key requirements:

  • Graduated from
    TOP UNIVERSITY
    specializing in Information Technology
  • Experience in programming with NodeJS
  • Experience about microservice , DDD design pattern , CQRS , Event sourcing ,...
  • Good knowledge of OOP and design patterns;
  • Experience in SQL, have knowledge in MySQL is an advantage;
  • Experience in Tomcat, Apache Web Server, ActiveMQ shall be an advantage;
  • Should be strong in communication skills;
  • Experience in implementing large systems
  • Experience in using docker, kubernetes, CI, CD
  • Experience in survey and analysis requirement
  • Good logical thinking, knowledge of system architecture
  • Strong coding with good performance
  • Experience in extending system
  • Have good communication skills in English, especially in reading and writing technical documentation ( Equivalent to IELTS 5.5)

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