Senior Java Software Engineer - Based in Ha Noi

12026-08-09
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What You'll Do

As a Senior Java Software Engineer, you'll play a key role in designing and delivering scalable backend solutions that power mission-critical applications. Working closely with cross-functional and international teams, you'll contribute to technical decisions while driving engineering excellence throughout the software development lifecycle.

Your responsibilities will include:

  • Design, develop, and maintain high-performance backend services using Java (11+) and Spring Boot, with a strong focus on scalability, reliability, and maintainability.
  • Build and evolve RESTful APIs and microservices that support distributed, cloud-native applications.
  • Design and implement event-driven architectures using technologies such as Apache Kafka, ensuring efficient, asynchronous communication across services.
  • Develop robust backend solutions by applying modern software design principles, architectural patterns, and best engineering practices.
  • Optimize application performance through effective data management using PostgreSQL and caching strategies with Redis.
  • Collaborate with DevOps teams to support containerized deployments using Docker, CI/CD pipelines, and modern cloud-native infrastructure.
  • Produce clean, well-structured, and thoroughly tested code through unit testing, integration testing, peer code reviews, and continuous refactoring.
  • Troubleshoot complex production issues, identify root causes, and implement long-term, sustainable solutions.
  • Participate in technical discussions, architecture reviews, and Agile ceremonies while contributing ideas that improve system quality and engineering standards.
  • Mentor junior engineers and foster a collaborative engineering culture through knowledge sharing and technical guidance.

Who We're Looking For

  • 5+ years of professional experience in backend software development using Java.
  • Strong hands-on experience with Java 11+ and Spring Boot in building enterprise-grade applications.
  • Proven experience designing and developing RESTful APIs, microservices, and scalable distributed systems.
  • Solid understanding of software architecture, backend design patterns, and modern engineering principles.
  • Hands-on experience with Apache Kafka and event-driven application development.
  • Strong knowledge of relational databases, particularly PostgreSQL, along with experience implementing caching solutions using Redis.
  • Practical experience working with Docker, CI/CD pipelines, and Agile software development methodologies.
  • A strong commitment to code quality through automated testing, code reviews, debugging, and continuous improvement.
  • Excellent analytical thinking, problem-solving skills, and the ability to work independently while collaborating effectively within a team.
  • Advanced English communication skills, with the confidence to participate in technical discussions and collaborate with international stakeholders on a daily basis.

Nice to have:

  • Experience with Kotlin.
  • Familiarity with messaging technologies such as RabbitMQ or similar message brokers.
  • Hands-on experience with Kubernetes and container orchestration.
  • Experience building and deploying applications in cloud-native environments (AWS, Azure, GCP, etc.).
  • Knowledge of Server-Sent Events (SSE) for real-time communication.
  • Experience applying Domain-Driven Design (DDD) principles in enterprise applications.
  • Exposure to designing and implementing Event-Driven Architecture in large-scale systems.

What We Offer

  • Attractive and competitive performance-based compensation package.
  • Full gross salary during probation.
  • Generous 13-month salary and dedication bonus.
  • Comprehensive healthcare insurance package and annual health check-ups.
  • Flexible working time, 2 days remote per week
  • Flexible check-in time before 10:00 AM.
  • 12 annual leave days, 5 sick leave days, 11 public holidays as required by Vietnamese Labor Law, plus one extra day off for Christmas.
  • Opportunity to work on global projects, collaborate with international teams.
  • Daily breakfast, Happy Thursday gatherings to connect with colleagues.
  • Active sport clubs such as badminton, running, football, music clubs.
  • Teambuilding activities, annual company trips, and year end party.
  • Continuous learning opportunities through technical & soft skills training, English classes, and internal communities.
  • Financial assistance for important life events, including marriage, childbirth, and bereavement, ensuring support at every stage of life.

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