Senior Fullstack Engineer

2 weeks ago

Hanoi, Hanoi, Vietnam 6756bd21-5b7e-498c-984f-ec81d03f6ba7 Full time $100,000 - $120,000 per year

As a Fullstack Engineer within the Platform teams, you will design, build, and operate AI-first E-Commerce and Digital Experience solutions across Sun Group's ecosystem. You will craft fast, reliable web applications and the services behind them - serving large user bases and high monthly transaction volumes - while integrating with world-class core systems and AI capabilities.

Responsibilities

  • Build and evolve user-facing apps using (or similar), modern TypeScript/JavaScript, reusable UI libraries, accessibility, and responsive design across devices.
  • Optimize for performance & reliability: SSR/ISR/edge rendering, code-splitting, bundle optimization, caching (CDN/Redis), error boundaries, graceful degradation, and observability.
  • Design idempotent, secure REST APIs; handle retries, backoff, saga/outbox patterns, and data consistency for transactional flows using
  • 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.
  • 5+ years of web application development on Linux; strong in modern JavaScript/TypeScript.
  • 3+ years hands-on with and
  • Experience building high-volume transactional features with attention to throughput, latency, scalability, and caching (Redis/CDN).
  • Comfortable using ORMs and working with relational/NoSQL stores at an application level.
  • 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.

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.

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