Working Location: Sun Ancora Tower, 03 Luong Yen, Hanoi (onsite)
As a Backend Engineer within the Platform teams, you will design, build, and operate highly scalable, highly available, and fault-tolerant AI-first E-Commerce and Digital Experience solutions that power Sun Group’s diverse ecosystem.
You will work on distributed systems serving millions of users and millions of transactions per month, addressing complex real-world scenarios across travel, hospitality, real estate, aviation, and entertainment. Our platforms integrate with world-class core systems and are natively enhanced by state-of-the-art AI technologies.
Responsibilities
Design and operate microservices and event-driven components (Kafka/RabbitMQ) with strong observability (metrics, logs, traces), SLOs, and graceful degradation.
Build idempotent, secure REST/gRPC APIs for platform services; handle retries, backoff, saga/outbox patterns, and data consistency.
Integrate with payment gateways, third-party partners and Sun Group’s internal platforms securely via OAuth2/OIDC/JWT, API Gateway, and proper rate-limiting.
Apply Agile and DevOps practices; CI/CD, automated testing, monitoring; to deliver high-quality code at speed.
Contribute to technical design discussions, architecture improvements, and engineering best practices.
Qualifications
Bachelor’s degree in Computer Science, IT, Electronics/Telecom, or related fields.
4+ years backend development on Linux; solid in at least one of .NET/Go (or Java/Python).
Proven experience designing high-volume transactional services (throughput, latency, scalability, caching with Redis).
Hands-on with RDBMS (SQL Server, PostgreSQL, MySQL) and NoSQL (MongoDB/Redis); schema design, indexing, and performance tuning.
Experience with Docker, Kubernetes, CI/CD; automated testing and observability.
Strong understanding of data structures, algorithms, object-oriented design, and familiarity with WebSocket or gRPC is a strong plus.
Exposure to cloud platforms such as Azure, AWS, or GCP is an advantage. Experience with Kafka, API Gateway, service mesh is a plus.
Soft Skills
Strong problem-solving and system thinking for complex, real-world transactional flows.
Clear communicator, collaborative with cross-functional teams.
Growth mindset, fast learner, comfortable with ambiguity; proactive in raising quality bars.
WHY YOU‘LL LOVE WORKING HERE
“An cư lạc nghiệp” policy: eligible employees receive full-value commercial apartments for long-term tenure.
Premium SunCare Insurance for employees and their families (fully covered for employees).
Annual comprehensive health check-up at Sun Group International Hospital.
Complimentary access to theme parks, cable cars, cultural/symphonic events, plus exclusive discounts at Hotels \& Resorts.
Special offers across aviation, NCB banking services, and real estate products.
A dynamic, innovation-driven working environment where talent and contributions are recognized and rewarded.