Mid-Senior Java Developer (in-house product)

Top 3 reasons to join us

• Good English Working Environment
• New technologies
• Competative salaries

Job description

This role involves developing and maintaining microservices-based applications with a strong emphasis on security and performance optimization (

Mid-level:

• Design, implement, and maintain Java-based microservices using Spring Framework.
• Develop high-quality code with a focus on security, including encryption and decryption methods to protect sensitive data.
• Optimize application performance and troubleshoot issues to ensure robust, scalable systems.
• Collaborate with DevOps and back-end teams to ensure seamless integration and deployment.
• Participate in code reviews and testing to ensure robustness and reliability.

Senior-level:

The Senior Java Developer will work on designing and building microservices architecture, integrating client APIs (SOAP, REST, RPC), and ensuring high performance, reliability, and security across our back-end systems. You will collaborate closely with customers, partners, and internal teams to deliver cutting-edge fintech solutions.

• Design, develop, and maintain back-end services using Java and Spring Framework.
• Lead the design and implementation of microservices architecture, ensuring scalability, reliability, and performance optimization.
• Integrate with external client APIs such as SOAP, REST, and RPC to ensure seamless communication with customer and partner systems.
• Work closely with customers and partners to understand their requirements, provide technical guidance, and ensure successful integration.
• Implement robust security measures, including encryption and decryption techniques, to protect sensitive data, adhering to payment industry standards.
• Collaborate with cross-functional teams to integrate back-end services with front-end applications, third-party systems, and APIs.
• Create well-documented, efficient, and maintainable code that follows industry best practices.
• Optimize application performance, identify bottlenecks, and troubleshoot system issues.
• Take ownership of the full software development lifecycle, including requirements gathering, design, development, testing, and deployment.
• Mentor junior developers and help foster a culture of continuous improvement within the team.
• Stay up-to-date with low-code platforms and security standards specific to the payment industry, ensuring compliance with best practices.

Your skills and experience

• Ability to work in a collaborative, Agile environment.
• Basic English communication. An upper-intermediate level of English is highly preferred.

Mid-level:

• At least 3+ years of experience in Java development.
• Proficiency in Java, Spring Framework, and microservice architecture.
• Strong understanding of software security principles, including encryption/decryption methods and protecting sensitive data.
• Familiarity with RESTful APIs and integrating them into back-end systems.
• Experience with Git or similar version control systems.

Senior-level:

• At least 5+ years of experience in Java development and back-end architecture.
• Strong experience in Java and the Spring Framework (Spring Boot, Spring Security).
• Expertise in microservices architecture and distributed systems design.
• In-depth understanding of security practices, including encryption and decryption methods, to protect sensitive data in the payment industry.
• Proven experience integrating with external client APIs (SOAP, REST, RPC).
• Ability to work closely with customers and partners, understanding their requirements and providing technical solutions.
• Hands-on experience with RESTful APIs and integrating them into back-end systems.
• Familiarity with databases, both SQL and NoSQL, and experience with database optimization.
• Experience with performance optimization and troubleshooting in high-load systems.
• Strong knowledge of containerization (e.g., Docker) and orchestration tools (e.g., Kubernetes).
• Proficiency with version control systems (e.g., Git) and CI/CD pipelines.

Preferred Skills:

• Knowledge of the payments industry, including payment gateways and wallet systems.
• Experience working with cloud platforms (e.g., AWS, Google Cloud, Azure).
• Understanding of event-driven architectures and messaging systems (e.g., Kafka, ActiveMQ, RabbitMQ).
• Familiarity with DevOps principles and tools for automation.
• Familiarity with low-code platforms.

Why you'll love working here

Benefits?

● 13th salary.
● 20 annual leave days in addition to Vietnamese public holidays.
● Work with high-profile multinational companies.
● Competitive salary and career evolution based on performance.