[Da Nang] Senior Backend JavaScript Developer

• Type: Onsite, Fulltime
• Salary: Negotiable
• Location: Son Tra, Da Nang
• YoE: 5

About the Role
Our Clients are seeking a Senior Backend JavaScript Developer to join on-site team. 

RESPONSIBILITIES:

• Design and develop scalable backend systems and APIs
• Architect database schemas and optimize query performance
• Implement caching strategies using Redis for high-traffic applications
• Build real-time features using WebSocket and event-driven architecture
• Integrate third-party services and payment gateways
• Mentor junior developers and establish coding standards
• Collaborate with frontend teams and DevOps for seamless deployment

QUALIFICATIONS:

Performance & Scalability:

• Load balancing and horizontal scaling strategies
• Database sharding and replication
• Memory management and garbage collection optimization
• API rate limiting and throttling

Security:

• Input validation and sanitization
• SQL injection and XSS prevention
• Secure authentication and authorization
• Data encryption and HTTPS implementation

Preferred Qualifications:

• Experience with event-driven architecture and CQRS pattern
• Knowledge of Apache Kafka or similar message brokers
• Familiarity with monitoring tools (New Relic, DataDog)
• Experience with serverless architecture (AWS Lambda, Vercel)
• Understanding of blockchain/Web3 development
• Microservices design and implementation experience