Java Software Engineer (Middle/Senior)

About this role

About Us Established in 2009, EPOS Vietnam serves as the technical hub of EPOS Singapore, a leading provider of cutting-edge Point-of-Sale (POS) and SaaS solutions. Backed by Ant International — a global leader in digital payments and financial technology — we play a pivotal role in developing innovative, scalable, and user-centric digital solutions that power EPOS products. Our technologies enable thousands of SMEs in Singapore, and with ongoing expansion plans across Asia, to digitize and grow their operations through cost-effective and reliable platforms. At EPOS Vietnam , we cultivate a collaborative and dynamic culture driven by innovation and a passion for transforming businesses through technology. Join us to shape the future of digital solutions across Asia and beyond! Key Contributions Write clean, well-tested, and maintainable code, adhering to established coding standards and best practices. Ensure component optimization for consistency and performance across all systems. Enhance system reliability and performance through ongoing optimization. Identify, diagnose, and resolve system bugs to maintain stability and efficiency. Establish methodologies and define metrics for system monitoring and performance tracking. Develop and maintain unit tests to prevent regression and ensure code quality. Collaborate with team members to understand business requirements and develop applications. Collaborate with cross-functional teams to design, develop, and deliver new features. Share technical knowledge and best practices with the broader engineering team. Participate in code reviews, offering constructive feedback and ensuring adherence to coding standards. Contribute to and lead the ongoing evolution of the microservices architecture, focusing on ensuring scalability, reliability, and long-term maintainability. Requirements At least 4 years of experience in Java backend Strong hands-on experience in frameworks such as Spring Boot, JUnit, etc. Familiar knowledge of Relational Databases, SQL and ORM technologies. Good understanding and knowledge of OOP, data structure, design patterns, concurrency programming and problem-solving Understanding of software development lifecycle (SDLC). Hands-on experience in Cloud (AWS, Azure, GCP) is a plus. Good/Fluent English communication is mandatory. Optimistic and proactive; dare to innovate and challenge different things. Ability to research, learn quickly, be open-minded, and work in a fun environment. Associate's/Bachelor’s degree in Computer Science / Information Technology / Software Development, or related fields. Benefits We are a multinational, product-driven company specializing in proprietary POS solutions — developing in-house and delivering directly to our worldwide customers. Benefits Recognition & Rewards: Performance Bonus (subject to the company’s business results and the employee’s performance evaluation) Biannual Performance Review and Salary Adjustment Comprehensive Insurance Coverage: Full government public insurance contributions based on gross salary Premium health insurance from Liberty Insurance Annual health check Clear career development and growth structure; Training sessions and Learning workshops 14 days of annual leave and one additional day of leave for every year of service Laptop/MacBook and top-notch facilities are provided based on each role Agile/Scrum-based internal workflows for efficient and collaborative development Company trips, parties and regular team-building activities; Weekly happy hour, coffee, snacks, and board games Working Environment & Culture International Workplace: English-speaking environment Positive and Open-Minded Culture: Engineers are encouraged to propose innovative solutions that enhance productivity and code quality 1-on-1 Mentorship: Monthly coffee sessions with managers offer personalized feedback, goal setting, and career development opportunities Flexible Working Hours: Promote work-life balance and individual productivity