Senior Product Specialist, Zalo Notification Service (API & Infrastructure)

• Own ZNS public APIs: Define and evolve APIs for message sending, template registration, and usage tracking. Collaborate with devs to optimize performance, error handling, and dev exeprience;

• Scale the usage metering & billing engine: Maintain and improve logic around ProductID, quota management, and real-time usage enforcement;

• Build internal service tools: Enable internal teams (support, finance, compliance) to review templates, process disputes, adjust billing, and track service SLAs via purpose-built tools;

• Drive reliability & monitoring: Partner with engineering to define SLAs, incident workflows, alerting systems, and auto-recovery policies for critical messaging infrastructure;

• Collaborate cross-functionally: Align with Business Portal PMs, Zalo Cloud infra teams, and BizOps to ensure platform-level changes support business growth and service quality.

👾 What you will need

Must have:

• 3+ years of experience in Product Management with a technical/platform focus;

• Proven experience working on API products, developer platforms, or infrastructure tools;

• Strong analytical thinking and ability to design systems (e.g., quota engines, retry queues);

• Experience working with engineering teams on scalable backend systems;

• Ability to write clear product specs and coordinate technical implementation.

Nice-to-have:

• Background in Computer Science or Engineering

• Experience in B2B SaaS, messaging platforms, or fintech

• Familiarity with internal admin tools, approval workflows, or billing systems

• Exposure to observability stacks (e.g., logs, metrics, alerting)