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Java Developer (Middle/Senior)

Ho Chi Minh City
Vietnamese

Job description

ABOUT THE JOB

  • Design, develop, and maintain backend services and applications using Java and Spring Boot.
  • Design and develop game-related services including player profiles, progression systems, missions, inventory management, and leaderboards based on Microservices Architecture.
  • Develop and integrate RESTful APIs, WebSocket, and Message Queue services with customer identity, loyalty, CRM, and data platform systems.
  • Build scalable, secure, and high-performance backend systems capable of handling peak traffic and campaign loads.
  • Design and optimize database structures, transactions, queries, caching strategies, and application performance.
  • Implement caching, distributed locking, and performance enhancement solutions using Redis and messaging technologies such as Kafka or RabbitMQ.
  • Troubleshoot, debug, and resolve production issues while maintaining system stability, monitoring, and alerting mechanisms.
  • Participate in code reviews, write Unit Tests and Integration Tests, and promote clean code and development best practices.
  • Ensure API and application security by applying authentication, authorization, encryption, and data protection standards.
  • Prepare technical documentation including architecture documents, API specifications (Swagger/OpenAPI), operational runbooks, and support application deployment and maintenance.

ABOUT YOU

  • Bachelor’s Degree in Computer Science, Information Technology, or a related engineering field.
  • From 4 years of experience in Java backend development.
  • At least 1 year of experience working with distributed systems or Microservices Architecture.
  • Strong proficiency in Java 17+, Spring Boot, and RESTful API development.
  • Good understanding of Spring Framework including Spring Data JPA, Spring Security, and enterprise application development.
  • Experience with relational databases such as PostgreSQL, Oracle, or MySQL, including query optimization, transaction management, and concurrency handling.
  • Hands-on experience with Redis for caching, distributed locking, rate limiting, or leaderboard implementations.
  • Experience working with message brokers such as Kafka or RabbitMQ.
  • Good understanding of OAuth2, OIDC, JWT, API security principles.
  • Experience with multithreading, concurrency, and asynchronous processing.
  • Familiarity with Docker, Kubernetes, GitLab CI, Jenkins, and modern CI/CD practices.
  • Experience with monitoring and observability tools such as Prometheus, Grafana, ELK, or OpenTelemetry.
  • Good understanding of JVM internals, memory management, Garbage Collection, and application performance profiling.
  • Experience in Banking, Financial Services, Fintech, Loyalty, Voucher, Real-time Game Backend, Fraud Detection, Spring Cloud, Batch/Stream Processing, Node.js, or Golang is a plus.

WHY AMARIS?

  • Competitive salary and 13th-month salary
  • 14+ annual leaves per year
  • Premium healthcare insurance, starting from your probation period
  • Project reviews and yearly performance appraisals
  • Annual company trips
  • Teambuilding activities: Team lunch/dinner, events, and celebrations, sports clubs (football, yoga, badminton, etc.)
  • International team with flexible working time
  • Tailor-made career path
  • Technical workshops and training courses
  • Mobility: Opportunities to be on-site abroad in our offices in over 60+ countries

Equal Opportunity

Amaris Consulting is proud to be an equal opportunity workplace. We are committed to promoting diversity within the workforce and creating an inclusive working environment. For this purpose, we welcome applications from all qualified candidates regardless of gender, sexual orientation, race, ethnicity, beliefs, age, marital status, disability, or other characteristics.

#LI-NH1

Who are we?

Amaris Consulting is an independent technology consulting firm providing guidance and solutions to businesses. With more than 1000 clients across the globe, we have been rolling out solutions in major projects for over a decade – this is made possible by an international team of 7,600 people spread across 5 continents and more than 60 countries. Our solutions focus on four different Business Lines: Information System & Digital, Telecom, Life Sciences and Engineering. We’re focused on building and nurturing a top talent community where all our team members can achieve their full potential. Amaris is your steppingstone to cross rivers of change, meet challenges and achieve all your projects with success.

At Amaris, we strive to provide our candidates with the best possible recruitment experience. We like to get to know our candidates, challenge them, and be able to give them proper feedback as quickly as possible. Here's what our recruitment process looks like:   

Brief Call: Our process typically begins with a brief virtual/phone conversation to get to know you! The objective? Learn about you, understand your motivations, and make sure we have the right job for you! 

Interviews (the average number of interviews is 3 - the number may vary depending on the level of seniority required for the position). During the interviews, you will meet people from our team: your line manager of course, but also other people related to your future role. We will talk in depth about you, your experience, and skills, but also about the position and what will be expected of you. Of course, you will also get to know Amaris: our culture, our roots, our teams, and your career opportunities!

Case study: Depending on the position, we may ask you to take a test. This could be a role play, a technical assessment, a problem-solving scenario, etc.   

As you know, every person is different and so is every role in a company.  That is why we have to adapt accordingly, and the process may differ slightly at times. However, please know that we always put ourselves in the candidate's shoes to ensure they have the best possible experience. 
We look forward to meeting you!

Interested in this job?

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