Senior Fullstack Developer (Web & Mobile)(Java, DevOps)

Top 3 reasons to join us

• Professional and international working environment
• Golden career path
• Attractive salary

Job description

🔹 Product Development

• Build and maintain cross-platform applications using Flutter (primary) or React Native to deliver consistent performance on iOS and Android.
• Develop responsive web applications with React.js / Next.js to ensure a seamless experience across desktop and mobile browsers.
• Implement real-time trading interfaces, dashboards, charts, and analytics for investors.
• Ensure smooth API integration with backend services (REST & GraphQL).

🔹 Technical Leadership

• Participate in defining frontend and mobile architecture (state management, modularization, performance optimization).
• Propose and implement best practices for coding standards, CI/CD pipelines, testing, and deployment.
• Contribute to system design discussions, offering expertise on frontend performance, scalability, and user experience.
• Support the backend team in designing API contracts, data models, and security layers.

🔹 Quality & Performance

• Ensure high-performance rendering and smooth interactions on mobile devices.
• Conduct code reviews, testing, and debugging to maintain high code quality.
• Optimize apps for offline usage, caching strategies, and push notifications.
• Collaborate with QA to ensure apps meet financial-grade quality standards.

🔹 Team Collaboration & Mentorship

• Work closely with Product Managers, BAs, and UX/UI designers to translate business needs into working features.
• Mentor junior and mid-level developers, providing guidance on frontend/mobile technologies, design patterns, and best practices.
• Act as a role model for agile development, encouraging knowledge sharing and continuous learning.

🔹 Innovation & Growth

• Stay up to date with the latest in mobile, web, and cloud technologies.
• Suggest and evaluate new tools and frameworks to improve developer productivity.
• Contribute to building an engineering culture that values clean code, scalability, and innovation.

Your skills and experience

• Bachelor’s or Master’s in Computer Science, Software Engineering, or related.
• 5+ years of experience in backend development, with at least 3 years in Java/Spring Boot.
• Strong expertise in Microservices, Event-driven systems (Kafka/RabbitMQ), and Database optimization (SQL/NoSQL).
• Deep understanding of API security, authentication, OAuth2, JWT, SSL/TLS.
• Hands-on experience with DevOps tools: Docker, Kubernetes, Jenkins, GitLab CI.
• Prior experience in Fintech, Banking, or High-frequency trading systems is highly preferred.
• Strong problem-solving skills, system design expertise, and ability to handle complexity.
• Leadership qualities: mentoring, guiding teams, and contributing to architectural decisions.
• Excellent communication in English, ability to explain complex technical concepts.

Why you'll love working here

THE BENEFITS 

• 13-month salary and performance bonus
• Full social benefits in accordance with the company and the Vietnam Law
• Premium health care & accident insurance
• Friendly working environment with strong startup culture 
• Team building, Company trip, Year-end party, etc.
• 40 flexible working hours per week from Monday to Friday 
• Salary review at least one time per year based on employee's performance and contribution