Senior Java Developer

About the role

GEM Corp is hiring a Senior Java Developer for its Hanoi and Ho Chi Minh City offices. The role covers building and maintaining web, mobile and e-commerce backends, with a focus on scalable services and RESTful APIs.

Key responsibilities

• Develop and maintain web, mobile and e-commerce backends
• Build scalable backend services and RESTful APIs
• Develop responsive web interfaces and administrative portals
• Integrate internal systems, third-party services and IoT devices
• Optimize system performance, security and reliability
• Perform code reviews, testing, troubleshooting and production support

Required profile

• 5+ years of software development experience
• Strong experience with Java and Spring Boot
• Hands-on experience with Vue 3 and JavaScript/TypeScript
• Knowledge of OSGi or modular application architecture
• Experience with PostgreSQL and/or Oracle, including SQL optimization
• Practical experience with Elasticsearch and Redis
• Good understanding of RESTful APIs, OOP, SOLID principles and design patterns
• Experience with Docker, CI/CD, AWS and monitoring tools
• Experience with Git, Maven/Gradle and Agile development
• E-commerce, enterprise systems, mobile backends or IoT platform experience is a plus
• Good problem-solving and English communication skills

What we offer

• Salary up to 50M, with probation pay at 100% of the official salary
• 13th-month salary and annual performance review
• Bonus for special occasions each year
• Professional certification and training allowances
• Health care insurance, annual health assessment and social, health and unemployment insurance
• Summer trips and team-building activities
• Five-day work week with flexible hours