Senior Backend Engineer (NodeJS)

Mission:We’re building a scalable loyalty and fintech ecosystem that connects millions of users across Southeast Asia.Our backend stack powers real-time transactions, personalized offers, and high-throughput integrations with top partners (banks, telcos, lifestyle brands).Key Responsibilities:Technical LeadershipDesign and maintain scalable, high-performance backend services.Analyze requirements, design and refine system architecture, and drive technical decisions with a microservices mindset.Build and standardize shared core libraries to ensure consistency and reduce development duplication across services.Conduct code reviews, enforce best practices, mentor team members, and foster technical growth.Evaluate and integrate AI-assisted workflows (GitHub Copilot, Chat GPT, Claude, etc.) to accelerate development.Work effectively in a cross-functional team, collaborating with product managers, designers, Front-end engineers, data scientists, and other stakeholders.Troubleshoot complex technical issues and ensure scalability, security, and reliability.Take ownership of critical backend modules and ensure their scalability, reliability, and observability.Collaborate with Technical Manager to design long-term architecture roadmap and tech standardization plan.Act as a decision-maker in choosing technologies, libraries, and system patterns for the team.Mentorship & Collaboration:Mentor and coach developers in both technical skills and engineering mindset.Conduct code reviews, technical workshops, and pair-programming sessions.Collaborate closely with Product, QA, and DevOps teams to ensure alignment on delivery goals.Contribute to the internal best-practice library (design patterns, coding standards, CI/CD templates).QualificationsTechnical Skills5+ years of software development experience, including 4+ years working with Node.js and microservices.Design and implement systems that can handle high volumes of data and traffic.Strong experience in system architecture design and backend performance optimization.Solid knowledge of both SQL and NoSQL databases, caching strategies, search engines, and distributed systems.Proven track record in leading engineering teams, mentoring developers, and conducting code reviews.Write high-quality, well-tested, and maintainable code.Implement secure coding practices and work closely with the security team to ensure the security of the platform.Strong problem-solving and technical decision-making abilities.Experience with cloud platforms (AWS, GCP, Azure).Deliver well-structured, reusable backend services within deadlines.Improve team delivery velocity and reduce bug rate via mentorship & review culture.Lead at least one technical initiative (e.g., architecture refactor, DevOps improvement, or AI tool integration).Leadership & MindsetProven ability to mentor and guide other engineers.Strong communication and stakeholder collaboration skills.Owner ship mindset—proactively solving problems and suggesting improvements.Experience working in AI-assisted development environments is a strong plus.Bonus SkillsFamiliarity with event-driven architecture and message queues.Experience integrating third-party APIs or working in fintech / loyalty platforms.Contribution to open-source projects or technical communities.BENEFITS:Competitive salary package (Base salary and performance bonuses).Probation period salary is 100% of the official salary.Comprehensive health and accident insurance.15 days of annual leave.Provision of work equipment (Macbook/ Laptop, mouse, monitor, etc.).A creative and modern working environment.Work Location: Galaxy Innovation Hub, D1 Road, Hi-Tech Park, Tang Nhon Phu Ward, HCMC