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Senior Software Engineer (Golang), Zalopay

OfficialTechSoftware25-PMT-3330
locationThành phố Hồ Chí Min...
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Mô tả công việc

Join the Merchant Solutions team to design, operate, and roll out payment solutions for domestic and international merchants such as VietQR, QuickPay, Authorize/Capture, and more. You will work on distributed, high-performance systems that process millions of merchant payment transactions daily. 

Responsibilities: 

  • Design, build, and maintain core payment systems for merchant solutions, including Agreement Pay, Authorize/Capture Payment, and recurring payment flows 
  • Develop and integrate QR payment solutions such as VietQR, NapasQR, and Static QR to enable seamless merchant transactions 
  • Implement payment integrations with global partners including Google, Apple, TikTok, Grab, and other strategic merchants 
  • Build and maintain cross-border payment capabilities with international partners such as Alipay, Tenpay,... 
  • Architect and operate high-traffic, low-latency services capable of handling large-scale transaction volumes with high availability 
  • Design reusable components and shared services to support multiple operational use cases across Zalopay's ecosystem 
  • Ensure data correctness, idempotency, and consistency across all payment flows to maintain financial integrity 
  • Maintain high code quality standards with comprehensive unit test coverage and integration test readiness 
  • Enhance system observability and traceability through logging, monitoring, and alerting to streamline operations and accelerate issue investigation 
  • Collaborate closely with Product, Operations, Finance, and other Engineering teams to deliver end-to-end payment solutions 
  • Contribute to technical standards, code review practices, and engineering best practices within the team 

Yêu cầu

  • 5+ years of software development experience, including at least 3 years of using Golang in production environments.   
  • Strong Go skills: data structures, API design, concurrency, and performance optimization.  
  • Experience with relational databases (MySQL/PostgreSQL), including schema design and query optimization for large‑scale systems.  
  • Hands‑on experience with Redis, Kafka, or equivalent distributed caching and event‑streaming platforms.  
  • Solid understanding of monolith, modular, and microservices architectures; familiar with CI/CD (Docker, Kubernetes), monitoring, and APM tools.  
  • Background in merchant payments, payment gateways, or other high‑throughput financial systems.  
  • Familiar with testing practices (unit, integration, E2E) and code review processes.  
  • Strong analytical and problem‑solving skills, with the ability to mentor and support junior engineers.  
  • Strongly prefer candidates with hands‑on experience in production systems using monolith, modular, and microservices architectures together with CI/CD (Docker, Kubernetes), monitoring, and APM.  
  • Preference for candidates who have worked on merchant payments, payment gateways, or other large‑scale, low‑latency transaction systems.